Klungsøyr har vært leder for forskningsgruppen ‘Registry based studies of familial risk’ i fagområdet Epidemiologi og Medisinsk Statistikk ved Institutt for Global Helse og Samfunnsmedisin (IGS), Medisinsk fakultet, Universitetet i Bergen, og er nå nestleder for Senter for translasjonell forskning i epidemiologi (TRACE), IGS, UiB.

Klungsøyr, som er tidligere allmennlege og spesialist i samfunnsmedisin, har i mer enn 20 år fokusert sin forskning på reproduktiv helse og perinatal epidemiologi. Ett tema har vært sammenhenger innad i familier (for eksempel gjennom arv og mer varige miljøfaktorer) og hvordan slike sammenhenger påvirker forholdet mellom kjente og ukjente risikofaktorer og uheldige svangerskapsutfall, på kort og lang sikt. Hun har også forsket på medfødte misdannelser, alvorlige komplikasjoner hos kvinner i forbindelse med svangerskap og fødsel, svangerskapsforgiftning, dødfødsel, fertilitet og sammenhengen mellom reproduktiv helse og helse senere i livet.

Som overlege ved Medisinsk fødselsregister (MFR) siden 2004 har Klungsøyr vært opptatt av at data i de norske helseregistrene må være av god kvalitet, og hun har gjennomført flere valideringsstudier av tilstander og intervensjoner registrert i MFR. Hun leder nå et stort samarbeidsprosjekt der forskere samarbeider med klinikere for å studere svært alvorlige utfall hos mor og barn ved svangerskap og fødsel. Her er ett av målene å evaluere om analyser av behandlingsforløpene (audit) kan brukes til å identifisere svikt og forsinkelser i behandlingen og dermed mulige områder for forbedring.

I løpet av siste tiår har Klungsøyr i økende grad vært involvert i forskning på nevroutviklingsforstyrrelser, med et fokus på Attention Deficit/Hyperactivity Disorder (ADHD). Innen dette forskningsfeltet har hun vært partner i et «Centre of excellence» ledet av prof Jan Haavik: ‘K.G. Jebsen centre for research on Neuropsychiatric disorders’. Dette senteret hadde som mål å anvende en translasjonell tilnærming til studier av nevroutviklingsforstyrrelser ved å kombinere epidemiologi, basal nevroforskning, genetikk, billeddiagnostikk og kliniske studier. Senteret var en suksess og oppnådde finansiering i to perioder. Klungsøyr har også vært deltager og partner i flere EU prosjekter på ADHD feltet.

Klungsøyr er partner i prosjektet "Healthier Women", ledet av prof Rolv Skjærven. Skjærven fikk ERC Advanced Grant for dette prosjektet, som har som et hovedmål å bruke data om kvinners totale reproduktive karriere til å studere sammenhengen mellom svangerskap og senere helse hos mor.

Klungsøyr er medlem av EuroPeristat, et europeisk nettverk som benytter rutinedata om svangerskap og fødsler fra forskjellige europeiske land for å utvikle europeiske indikatorer om perinatal helse og studere ulike spørsmål innen perinatal-feltet basert på disse data. Nettverket publiserer rapporter som viser de perinatale helseindikatorene, siste rapport viste indikatorer for årene 2015-2019: https://www.europeristat.com/

Klungsøyr er også medlem av EUROCAT, European network of population-based registries for the epidemiological surveillance of congenital anomalies, hvor hun representerer MFR. Dette nettverket, etablert I 1974, har siden 2015 ligget ved European Commission's Joint Research Centre. Nettverket har som hovedmål å drive overvåkning av og forskning om medfødte misdannelser, og publiserer årlige oppdatert Statistikk om forekomst av medfødte misdannelser i Europa: https://eu-rd-platform.jrc.ec.europa.eu/eurocat_en

 

Klungsøyr underviser ulike emner innen epidemiologi, for medisinerstudenter, master studenter innen ernæring og farmasi, og for PhD studenter. Hun underviser også noen emner innen samfunnsmedisin for medisinerstudenter. 

Klungsøyr veileder medisinerstudenter når de skal skrive sine hovedoppgaver, medisinerstudenter som går "forskerlinjen" og PhD studenter. Hun er også mentor for post doc stipendiater. 

Konferanseforedrag

• Marte Irene Skille Carlsen; Oddvar Uleberg; Randi Marie Mohus et al. (2025). Incidence of peripartum hysterectomy due to postpartum hemorrhage: A national population‐based cohort study. (ekstern lenke)
• Ellen Løkkegård; Sven Rasmussen; A Pykonen et al. (2014). Cesarean delivery in induced women - Nordic countries 2000-2011. (ekstern lenke)
• Berit Skretting Solberg; Tetyana Zayats; Maj-Britt Rocio Posserud et al. (2018). Psychiatric comorbidity and genetic correlations provide new insights into differences between ADHD and autism. (ekstern lenke)
• Finn Egil Skjeldestad; Janne Rossen; Kari Klungsøyr et al. (2017). Maternal age, epidural analgesia and oxytocin augmentation as risk factors for cesarean delivery in nulliparous women in spontaneous labor at term.. (ekstern lenke)
• Berit Skretting Solberg; Tor-Arne Hegvik; Tetyana Zayats et al. (2019). Parent-offspring recurrence of ADHD. (ekstern lenke)
• Berit Skretting Solberg; Tetyana Zayats; Maj-Britt Rocio Posserud et al. (2018). Psychiatric comorbidities in adults with ADHD and/or autism: Can patterns of comorbidities together with genetics add knowledge on etiologic relations?. (ekstern lenke)
• Dagrun Slettebø Daltveit; Kari Klungsøyr; Anders Engeland et al. (2020). Cancer risk in individuals with major birth defects: A large Nordic population-based case-control study among children, adolescents, and adults. (ekstern lenke)
• Dagrun Slettebø Daltveit; Kari Klungsøyr; Anders Engeland et al. (2021). Childhood cancer risk among individuals with major birth defects: A Nordic collaborative study. (ekstern lenke)
• Linn Marie Sørbye; Kari Klungsøyr; Nils-Halvdan Morken et al. (2025). Pre-pregnancy body mass index and risk of gestational diabetes mellitus by maternal country of birth: a registry-based study.. (ekstern lenke)
• Berit Skretting Solberg; Tetyana Zayats; Maj-Britt Rocio Posserud et al. (2018). Psychiatric comorbidity and genetic correlations provide new insights into differences between ADHD and autism. (ekstern lenke)
• Berit Skretting Solberg; Tor-Arne Hegvik; Anne Halmøy et al. (2019). Parent-offspring recurrence of attention-deficit/hyperactivity disorder. (ekstern lenke)
• Dagrun Slettebø Daltveit; Kari Klungsøyr; Anders Engeland et al. (2022). Cancer risk in individuals with siblings with major birth defects: A large Nordic population-based case-control study. (ekstern lenke)
• Berit Skretting Solberg; Anne Halmøy; Anders Engeland et al. (2017). Gender Differences in Psychiatric Comorbidity: A Population-based Study of 40,000 Adults with Attention-Deficit/Hyperactivity Disorder. (ekstern lenke)
• A Pykkonen; Mika Gissler; Finn Egil Skjeldestad et al. (2014). Caesaren delivery inNordic countries 1991-2011: a registry study using the Robson groups. (ekstern lenke)
• Berit Skretting Solberg; Anne Halmøy; Anders Engeland et al. (2017). Psychiatric comorbidities in male and female adults with ADHD. (ekstern lenke)

Konferanseposter

• Linn Marie Sørbye; Kari Klungsøyr; Nils-Halvdan Morken et al. (2025). Pre-pregnancy body mass index and risk of gestational diabetes mellitus by country of birth: A registry-based study.. (ekstern lenke)
• Liv Cecilie Vestrheim; Rigmor Austgulen; Kari Klungsøyr Melve et al. (2010). Classification of pre-eclamptic pregnancies in health registries. An evaluation of criteria selected and pregnancies included in the Medical Birth Registry of Norway. (ekstern lenke)
• Michael Honingberg; Hilde Kristin Refvik Riise; Anne Kjersti Nesje Daltveit et al. (2020). Long-term risk of heart failure in women with hypertensive disorders of pregnancy. (ekstern lenke)
• Finn Egil Skjeldestad; Kari Klungsøyr; Thomas Bergholt et al. (2014). Caesarean delivery among nulliparous women - Nordic countries 2000-2011. (ekstern lenke)
• Susanne Albrechtsen; Kari Klungsøyr; Thomas Bergholt et al. (2014). Breech deliveries in the Nordic countries. (ekstern lenke)
• Dagrun Slettebø Daltveit; Tone Bjørge; Kari Klungsøyr et al. (2022). Childhood cancer risk among children with major birth defects – sex differences?. (ekstern lenke)

Vitenskapelig artikkel

• Jóhanna Gunnarsdóttir; Marianne Philibert; Mika Gissler et al. (2025). Timing of Term Births and Associated Mortality Risks: Ecological Analysis Across 28 European Countries. (ekstern lenke)
• Kari Klungsøyr Melve; Rolv Skjaerven; Svein Rasmussen et al. (2010). Recurrence of stillbirth in sibships: population-based cohort study. (ekstern lenke)
• Linn Marie Sørbye; Sven Cnattingius; Rolv Skjærven et al. (2020). Interpregnancy weight change and recurrence of gestational diabetes mellitus: a population-based cohort study. (ekstern lenke)
• Dagrun Slettebø Daltveit; Kari Klungsøyr; Anders Engeland et al. (2020). Cancer risk in individuals with major birth defects: large Nordic population based case-control study among children, adolescents, and adults. (ekstern lenke)
• Frode Halland; Nils-Halvdan Morken; Lisa deRoo et al. (2016). Long-term mortality in mothers with perinatal losses and risk modification by surviving children and attained education: A population-based cohort study. (ekstern lenke)
• Liv Cecilie Vestrheim Thomsen; Kari Klungsøyr Melve; Linda Tømmerdal Roten et al. (2013). Validity of the diagnosis of pre-eclampsia in the Medical Birth Registry of Norway. (ekstern lenke)
• Abira Paramsothy; Tor-Arne Hegvik; Anders Engeland et al. (2023). Fetal Exposure to Preeclampsia and Later Risk of Cardiometabolic Disorders: A Population-Based Cohort Study. (ekstern lenke)
• Joan K. Morris; Jorieke E. H. Bergman; Ingeborg Barisic et al. (2023). Surveillance of multiple congenital anomalies; searching for new associations. (ekstern lenke)
• Nadia Arshad; Rolv Skjaerven; Kari Klungsøyr et al. (2024). Pregnancy-Associated Maternal Mortality Within One Year After Childbirth: Population-Based Cohort Study. (ekstern lenke)
• Nils-Halvdan Morken; Kari Klungsøyr; Rolv Skjaerven (2014). Perinatal mortality by gestational week and size at birth in singleton pregnancies at and beyond term: A nationwide population-based cohort study. (ekstern lenke)
• Joan K. Morris; Diana Wellesley; Elizabeth Limb et al. (2022). Prevalence of vascular disruption anomalies and association with young maternal age: A EUROCAT study to compare the United Kingdom with other European countries. (ekstern lenke)
• Solveig Bjellmo; Guro Lillemoen Andersen; Sissel Hjelle et al. (2020). Does caesarean delivery in the first pregnancy increase the risk for adverse outcome in the second? A registry-based cohort study on first and second singleton births in Norway. (ekstern lenke)
• Yeneabeba Sima; Rolv Skjaerven; Liv Grimstvedt Kvalvik et al. (2022). Cesarean delivery in Norwegian nulliparous women with singleton cephalic term births, 1967–2020: a population-based study. (ekstern lenke)
• Joan K. Morris; Marie-Claude Addor; Elisa Ballardini et al. (2021). Prevention of Neural Tube Defects in Europe: A Public Health Failure. (ekstern lenke)
• Rolv Skjaerven; Allen J Wilcox; Kari Klungsøyr Melve et al. (2012). Cardiovascular mortality after pre-eclampsia in one child mothers: prospective, population based cohort study. (ekstern lenke)
• Trude Gildestad; Tone Bjørge; Stein Emil Vollset et al. (2015). Folic acid supplements and risk of oral clefts in the newborn: A population-based study.. (ekstern lenke)
• Ingvild Vistad; Kari Klungsøyr; Susanne Albrechtsen et al. (2015). Neonatal outcome of singleton term breech deliveries in Norway from 1991 to 2011. (ekstern lenke)
• Lisa deRoo; Rolv Skjaerven; Allen Wilcox et al. (2015). Placental abruption and long-term maternal cardiovascular disease mortality: a population-based registry study in Norway and Sweden. (ekstern lenke)
• Joan K. Morris; Diana G. Wellesley; Ingeborg Barisic et al. (2019). Epidemiology of congenital cerebral anomalies in Europe: a multicentre, population-based EUROCAT study. (ekstern lenke)
• Brian Cleary; Maria Loane; Marie-Claude Addor et al. (2019). Methadone, Pierre Robin sequence and other congenital anomalies: case–control study. (ekstern lenke)
• Alessio Coi; Michele Santoro; Anna Pierini et al. (2022). Survival of children with rare structural congenital anomalies: a multi-registry cohort study. (ekstern lenke)
• Liv Grimstvedt Kvalvik; Kjell Haug; Kari Klungsøyr et al. (2016). Maternal smoking status in successive pregnancies and risk of having a small for gestational age infant. (ekstern lenke)
• Maria Loane; Joan K. Morris; Marie-Claude Addor et al. (2013). Twenty-year trends in the prevalence of Down syndrome and other trisomies in Europe: impact of maternal age and prenatal screening. (ekstern lenke)
• Thomas Bergholt; Finn Egil Skjeldestad; Aura Pyykönen et al. (2019). Maternal age and risk of cesarean section in women with induced labor at term—A Nordic register‐based study. (ekstern lenke)
• Abdu Kedir Seid; Nils-Halvdan Morken; Kari Klungsøyr et al. (2023). Pregnancy complications in last pregnancy and mothers’ long-term cardiovascular mortality: does the relation differ from that of complications in first pregnancy? A population-based study. (ekstern lenke)
• Michele Santoro; Alessio Coi; Anna Pierini et al. (2022). Temporal and geographical variations in survival of children born with congenital anomalies in Europe: A multi-registry cohort study. (ekstern lenke)
• Camilla Tjønneland Mentzoni; Kari Klungsøyr; Hilde Marie Engjom (2024). Trends in severe postpartum haemorrhage among nulliparous women with spontaneous onset of labour: A population-based cohort study. (ekstern lenke)
• Anna Heino; Mika Gissler; Ashna D. Hindori-Mohangoo et al. (2016). Variations in multiple birth rates and impact on perinatal outcomes in Europe. (ekstern lenke)
• Lotte B Colmorn; Lone Krebs; Kari Klungsøyr et al. (2017). Mode of first delivery and severe maternal complications in the subsequent pregnancy. (ekstern lenke)
• Anne Tandberg; Kari Klungsøyr Melve; Tone Irene Nordtveit et al. (2011). Maternal birth characteristics and perinatal mortality in twin offspring. An intergenerational population-based study in Norway, 1967-2008. (ekstern lenke)
• Ida Neergård Sletten; Jarkko Jokihaara; Kari Klungsøyr (2024). Prevalence, infant outcomes and gestational risk factors for transverse reduction deficiencies at or above the wrist: a population-based study. (ekstern lenke)
• Henriette Magelssen; Kari Klungsøyr Melve; Rolv Skjaerven et al. (2008). Parenthood probability and pregnancy outcome in patients with a cancer diagnosis during adolescence and young adulthood. (ekstern lenke)
• Jorieke E.H. Bergman; Maria Loane; Martine Vrijheid et al. (2015). Epidemiology of hypospadias in Europe: a registry-based study. (ekstern lenke)
• Elisa Calzolari; Ingeborg Barisic; Maria Loane et al. (2014). Epidemiology of multiple congenital anomalies in Europe: A EUROCAT population-based registry study. (ekstern lenke)
• Kari Klungsøyr Melve; Rolv Skjærven (2008). Outcomes of pregnancies following a birth with major birth defects: A population based study. (ekstern lenke)
• Michele Santoro; Alessio Coi; Ingeborg Barišić et al. (2019). Epidemiology of Dandy-Walker malformation in Europe: A EUROCAT population-based registry study. (ekstern lenke)
• H Magelssen; TB Haugen; V Von During et al. (2005). Twenty years experience with semen cryopreservation in testicular cancer patients: who needs it?. (ekstern lenke)
• Tor-Arne Hegvik; Johanne Telnes Instanes; Jan Haavik et al. (2017). Associations between attention-deficit/hyperactivity disorder and autoimmune diseases are modified by sex: a population-based cross-sectional study. (ekstern lenke)
• Maj-Britt Rocio Posserud; Berit Skretting Solberg; Anders Engeland et al. (2021). Male to female ratios in autism spectrum disorders by age, intellectual disability and attention-deficit/hyperactivity disorder. (ekstern lenke)
• Sophie D. Fosså; H Magelssen; Kari Klungsøyr Melve et al. (2005). Parenthood in survivors after adulthood cancer and perinatal health in their offspring. (ekstern lenke)
• Hilde Marie Engjom; Nils-Halvdan Morken; Even Høydahl et al. (2018). Risk of eclampsia or HELLP-syndrome by institution availability and place of delivery - A population-based cohort study. (ekstern lenke)
• Qi Chen; Catharina A. Hartman; Jan Haavik et al. (2018). Common psychiatric and metabolic comorbidity of adult attention-deficit/hyperactivity disorder: A population-based cross-sectional study. (ekstern lenke)
• Joanne E. Given; Maria Loane; Johannes Michiel Luteijn et al. (2016). EUROmediCAT signal detection: an evaluation of selected congenital anomaly-medication associations. (ekstern lenke)
• Johannes Michiel Luteijn; Joan K. Morris; Ester Garne et al. (2016). EUROmediCAT signal detection: a systematic method for identifying potential teratogenic medication. (ekstern lenke)
• Janne Rossen; Kari Klungsøyr; Susanne Albrechtsen et al. (2018). Can oxytocin augmentation modify the risk of epidural analgesia by maternal age in cesarean sections?. (ekstern lenke)
• Hanne Stensheim; Kari Klungsøyr Melve; Rolv Skjaerven et al. (2013). Birth outcomes among offspring of adult cancer survivors: A population-based study. (ekstern lenke)
• Yeneabeba Tilahun Sima; Rolv Skjaerven; Liv Grimstvedt Kvalvik et al. (2023). Birth Weight in Consecutive Pregnancies and Maternal Cardiovascular Disease Mortality Among Spontaneous and Iatrogenic Term Births: A Population-Based Cohort Study. (ekstern lenke)
• Jacqueline Mallory Cohen; Silje Alvestad; Carolyn E. Cesta et al. (2022). Comparative Safety of Antiseizure Medication Monotherapy for Major Malformations. (ekstern lenke)
• Christine Roberts; Jane B Ford; Charles S Algert et al. (2014). Population-based trends in pregnancy hypertension and pre-eclampsia: an international comparative study. (ekstern lenke)
• Rolv Skjærven; Kari Klungsøyr Melve (2007). Selective fertility – the examples of perinatal death and preeclampsia. (ekstern lenke)
• E Garne; M Loane; H Dolk et al. (2012). Spectrum of congenital anomalies in pregnancies with pregestational diabetes. (ekstern lenke)
• Shwe Sin Win; Gerhard Sulo; Anders Engeland et al. (2025). Paternal Cardiometabolic Conditions and Perinatal Mortality. (ekstern lenke)
• Sarah M. Baxter; Tone Bjørge; Rolf Bjerkvig et al. (2025). Use of psychotropic medications among glioma patients in Denmark, Norway, Sweden, and Wales. (ekstern lenke)
• Maija Jakobsson; Anna-Maija Tapper; Lotte Berdiin Colmorn et al. (2015). Emergency peripartum hysterectomy: Results from the prospective Nordic Obstetric Surveillance Study (NOSS). (ekstern lenke)
• Michele Santoro; Alessio Coi; Ingeborg Barišić et al. (2021). Epidemiology of Pierre-Robin sequence in Europe: A population-based EUROCAT study. (ekstern lenke)
• Linda de Jonge; Ester Garne; Rosa Gini et al. (2015). Improving information on maternal medication use by linking prescription data to congenital anomaly registers: a EUROmediCAT study. (ekstern lenke)
• Ester Garne; Anke Rissmann; Marie-Claude Addor et al. (2018). Epidemiology of septo-optic dysplasia with focus on prevalence and maternal age? A EUROCAT study. (ekstern lenke)
• Jennifer Zeitlin; Marianne Philibert; Henrique Barros et al. (2024). Socioeconomic disparities in changes to preterm birth and stillbirth rates during the first year of the COVID-19 pandemic: a study of 21 European countries. (ekstern lenke)
• Mette Christophersen Tollånes; Kari Klungsøyr Melve; Lorentz M Irgens et al. (2007). Reduced fertility after cesarean delivery - A maternal choice. (ekstern lenke)
• H Magelssen; Trine B. Haugen; Vidar von Düring et al. (2005). Twenty years experience with semen cryopreservation in testicular cancer patients: who needs it?. (ekstern lenke)
• Trude Gildestad; Nina Øyen; Kari Klungsøyr et al. (2016). Maternal use of folic acid supplements and infant risk of neural tube defects in Norway 1999-2013. (ekstern lenke)
• Linn Marie Sørbye; Rolv Skjaerven; Kari Klungsøyr et al. (2017). Gestational diabetes mellitus and interpregnancy weight change: A population-based cohort study. (ekstern lenke)
• Guido Cocchi; Silvia Gualdi; Caroline Bower et al. (2010). International trends of Down Syndrome 1993-2004: births in relation to maternal age and terminations of pregnancies. (ekstern lenke)
• Lina Herstad; Kari Klungsøyr; Rolv Skjaerven et al. (2016). Elective cesarean section or not? Maternal age and risk of adverse outcomes at term: A population-based registry study of low-risk primiparous women. (ekstern lenke)
• Tor-Arne Hegvik; Kari Klungsøyr; Ralf Kuja-Halkola et al. (2022). Labor epidural analgesia and subsequent risk of offspring autism spectrum disorder and attention-deficit/hyperactivity disorder: a cross-national cohort study of 4.5 million individuals and their siblings. (ekstern lenke)
• Johanne Telnes Instanes; Kari Klungsøyr; Anne Halmøy et al. (2016). Adult ADHD and Comorbid Somatic Disease: A Systematic Literature Review. (ekstern lenke)
• Rachel A Charlton; Anna Pierini; Kari Klungsøyr et al. (2016). Asthma medication prescribing before, during and after pregnancy: a study in seven European regions. (ekstern lenke)
• Hao Wang; Ingeborg Barisic; Maria Loane et al. (2019). Congenital clubfoot in Europe: A population-based study. (ekstern lenke)
• Svein Arvid Rasmussen; Lorentz M Irgens; Rolv Skjærven et al. (2009). Prior adverse pregnancy outcome and the risk of stillbirth. (ekstern lenke)
• Jennifer Zeitlin; Laust Mortensen; Marina Cuttini et al. (2016). Declines in stillbirth and neonatal mortality rates in Europe between 2004 and 2010: results from the Euro-Peristat project. (ekstern lenke)
• Kristoffer Brodwall; Gottfried Greve; Elisabeth Leirgul et al. (2018). The five-year survival of children with Down syndrome in Norway 1994-2009 differed by associated congenital heart defects and extracardiac malformations. (ekstern lenke)
• Liv Grimstvedt Kvalvik; Kari Klungsøyr; Jannicke Igland et al. (2022). Association of sweetened carbonated beverage consumption during pregnancy and ADHD symptoms in the offspring: a study from the Norwegian Mother, Father and Child Cohort Study (MoBa). (ekstern lenke)
• Anke Rissmann; Joachim Tan; Svetlana V Glinianaia et al. (2023). Causes of death in children with congenital anomalies up to age 10 in eight European countries. (ekstern lenke)
• Chrysovalanto Mamasoula; Marie-Claude Addor; Clara Cavero Carbonell et al. (2022). Prevalence of congenital heart defects in Europe, 2008–2015: A registry-based study. (ekstern lenke)
• Melissa Amyx; Marianne Philibert; Alex Farr et al. (2023). Trends in caesarean section rates in Europe from 2015 to 2019 using Robson's Ten Group Classification System: A Euro-Peristat study. (ekstern lenke)
• R A Charlton; V Bettoli; H J Bos et al. (2017). The limitations of some European healthcare databases for monitoring the effectiveness of pregnancy prevention programmes as risk minimisation measures. (ekstern lenke)
• Ingeborg Barisic; Ljubika Boban; Maria Loane et al. (2015). Meckel–Gruber Syndrome: a population-based study on prevalence, prenatal diagnosis, clinical features, and survival in Europe. (ekstern lenke)
• Alice Hocquette; Mélanie Durox; Rachael Wood et al. (2021). International versus national growth charts for identifying small and large-for-gestational age newborns: A population-based study in 15 European countries. (ekstern lenke)
• Roy M Nilsen; Stein Emil Vollset; Håkon K. Gjessing et al. (2009). Self-selection and bias in a large prospective pregnancy cohort in Norway. (ekstern lenke)
• Rachel A Charlton; Kari Klungsøyr; Amanda J. Neville et al. (2016). Prescribing of antidiabetic medicines before, during and after pregnancy: A study in seven European regions. (ekstern lenke)
• Hugh Claridge; Joachim Tan; Maria Loane et al. (2023). Ethics and legal requirements for data linkage in 14 European countries for children with congenital anomalies. (ekstern lenke)
• Alessio Coi; Michele Santoro; Ester Garne et al. (2019). Epidemiology of achondroplasia: A population-based study in Europe. (ekstern lenke)
• Anneli Anderson; Tor-Arne Hegvik; Qi Chen et al. (2020). Attention-deficit/hyperactivity disorder and smoking habits in pregnant women. (ekstern lenke)
• Hilde Marie Engjom; Anna J. M. Aabakke; Kari Klungsøyr et al. (2021). COVID‐19 in pregnancy – characteristics and outcomes of pregnant women admitted to hospital because of SARS‐CoV‐2 infection in the Nordic countries. (ekstern lenke)
• Babak Khoshnood; Maria Loane; Hermien De Walle et al. (2015). Long term trends in prevalence of neural tube defects in Europe: population based study. (ekstern lenke)
• Mark R. McGivern; Kate E. Best; Judith Rankin et al. (2015). Epidemiology of congenital diaphragmatic hernia in Europe: A register-based study. (ekstern lenke)
• Joanne E Given; Maria Loane; Ester Garne et al. (2017). Gastroschisis in Europe - a Case-malformed-control study of medication and maternal illness during pregnancy as risk factors. (ekstern lenke)
• Aura Pyykönen; Mika Gissler; Ellen Løkkegaard et al. (2017). Cesarean section trends in the Nordic Countries - a comparative analysis with the Robson classification. (ekstern lenke)
• Shwe Sin Win; Kari Klungsøyr; Grace Margrethe Egeland et al. (2025). Paternal family history of premature atherosclerotic disease and perinatal death: A population-based cohort study. (ekstern lenke)
• Valgerdur Steinthorsdottir; Ralph McGinnis; Nicholas O. Williams et al. (2020). Genetic predisposition to hypertension is associated with preeclampsia in European and Central Asian women. (ekstern lenke)
• Ester Garne; Anne Vinkel Hansen; Joan K. Morris et al. (2016). Risk of congenital anomalies after exposure to asthma medication in the first trimester of pregnancy – a cohort linkage study. (ekstern lenke)
• Kari Klungsøyr Melve; Håkon K Gjessing; Rolv Skjærven et al. (2000). Infant's length at birth: an independent effect on perinatal mortality. (ekstern lenke)
• Anna E. Bauer; Christy L. Avery; Min Shi et al. (2021). Do Genetic Variants Modify the Effect of Smoking on Risk of Preeclampsia in Pregnancy?. (ekstern lenke)
• Berit Skretting Solberg; Tetyana Zayats; Maj-Britt Rocio Posserud et al. (2019). Patterns of psychiatric comorbidity and genetic correlations provide new insights into differences between attention-deficit/hyperactivity disorder and autism spectrum disorder. (ekstern lenke)
• Michele Santoro; Ester Garne; Alessio Coi et al. (2023). Survival, hospitalisation and surgery in children born with Pierre Robin sequence: A European population-based cohort study. (ekstern lenke)
• Tone Irene Nordtveit; Kari Klungsøyr Melve; Susanne Albrechtsen et al. (2008). Maternal and paternal contribution to intergenerational recurrence of breech delivery: population based cohort study. (ekstern lenke)
• Prativa Basnet; Rolv Skjaerven; Quaker E. Harmon et al. (2023). Risk of adverse pregnancy outcomes in twin- and singleton-born women: An inter-generational cohort study. (ekstern lenke)
• Tian Xie; Lizanne J.S. Schweren; Henrik Larsson et al. (2023). Do Poor Diet and Lifestyle Behaviors Modify the Genetic Susceptibility to Impulsivity in the General Population?. (ekstern lenke)
• Rachel Charlton; Ester Garne; Hao Wang et al. (2015). Antiepileptic drug prescribing before, during and after pregnancy: a study in seven European regions. (ekstern lenke)
• Joan K. Morris; Judith Rankin; Ester Garne et al. (2016). Prevalence of microcephaly in Europe: Population based study. (ekstern lenke)
• Babak Khoshnood; Maria Loane; Ester Garne et al. (2013). Recent Decrease in the Prevalence of Congenital Heart Defects in Europe. (ekstern lenke)
• Kyle R. Roell; Quaker Harmon; Kari Klungsøyr et al. (2021). Clustering Longitudinal Blood Pressure Trajectories to Examine Heterogeneity in Outcomes among Preeclampsia Cases and Controls. (ekstern lenke)
• Alana Cavadino; Lovisa Sandberg; Inger Øhman et al. (2021). Signal Detection in EUROmediCAT: Identification and Evaluation of Medication–Congenital Anomaly Associations and Use of VigiBase as a Complementary Source of Reference. (ekstern lenke)
• Tone Irene Nordtveit; Kari Klungsøyr Melve; Rolv Skjaerven (2009). Intergenerational birth weight associations by mother's birth order - The mechanisms behind the paradox: A population-based cohort study. (ekstern lenke)
• Dagrun Slettebø Daltveit; Kari Klungsøyr; Anders Engeland et al. (2022). Sex differences in childhood cancer risk among children with major birth defects: a Nordic population-based nested case-control study. (ekstern lenke)
• Janneke Jentink; Maria A. Loane; Helen Dolk et al. (2010). Valproic acid monotherapy in pregnancy and major congenital malformations. (ekstern lenke)
• Sophie D Fosså; Henriette Magelssen; Kari Klungsøyr Melve et al. (2005). Parenthood in Survivors After Adulthood Cancer and Perinatal Health in Their Offspring: A Preliminary Report. (ekstern lenke)
• Jennifer Zeitlin; Laust Mortensen; Caroline Prunet et al. (2016). Socioeconomic inequalities in stillbirth rates in Europe: measuring the gap using routine data from the Euro-Peristat Project. (ekstern lenke)
• Maria Jeppegaard; Maria Kongerslev Frølich; Liv Cecilie Vestrheim Thomsen et al. (2024). Perinatal death in the Nordic countries in relation to gestational age: The impact of registration practice. (ekstern lenke)
• Kjersti Postmyr Jystad; Kristin Melheim Strand; Solveig Bjellmo et al. (2017). Congenital anomalies and the severity of impairments for cerebral palsy. (ekstern lenke)
• Dagrun Slettebø Daltveit; Kari Klungsøyr; Anders Engeland et al. (2023). Cancer risk in the siblings of individuals with major birth defects: a large Nordic population-based case-control study. (ekstern lenke)
• Camilla Djønne Moldekleiv; Astri J. Lundervold; Berit Skretting Solberg et al. (2025). Prevalence of substance use disorder in individuals with attention deficit/hyperactivity disorder: associations with sex and psychiatric comorbidity. (ekstern lenke)
• Berit Skretting Solberg; Maj-Britt Rocio Posserud; André Høberg et al. (2025). Sex differences in self-reported attention-deficit/hyperactivity disorder symptoms in clinical and population-based cohorts. (ekstern lenke)
• B Boyle; R McConkey; E Garne et al. (2013). Trends in the prevalence, risk and pregnancy outcome of multiple births with congenital anomaly: a registry-based study in 14 European countries 1984-2007. (ekstern lenke)
• Frode Halland; Nils-Halvdan Morken; Lisa deRoo et al. (2015). Association of Women's Reproductive History with Long-term Mortality and Effect of Socioeconomic Factors. (ekstern lenke)
• Roy Miodini Nilsen; Kari Klungsøyr; Hein Stigum (2023). Adjusting for outcome risk factors in immigrant datasets: total or direct effects?. (ekstern lenke)
• Kari Klungsøyr; Quaker Harmon; Linn Beate Skard et al. (2014). Validity of pre-eclampsia registration in the medical birth registry of Norway for women participating in the Norwegian mother and child cohort study, 1999-2010. (ekstern lenke)
• Joan K. Morris; Ester Garne; Diana Wellesley et al. (2014). Major congenital anomalies in babies born with Down syndrome: a EUROCAT population-based registry study. (ekstern lenke)
• Anders Engeland; Tone Bjørge; Kari Klungsøyr et al. (2018). Trends in prescription drug use during pregnancy and postpartum in Norway, 2005 to 2015. (ekstern lenke)
• Ashna D. Mohangoo; Béatrice Blondel; Mika Gissler et al. (2013). International Comparisons of Fetal and Neonatal Mortality Rates in High-Income Countries: Should Exclusion Thresholds Be Based on Birth Weight or Gestational Age?. (ekstern lenke)
• Hilde Marie Engjom; Nils-Halvdan Morken; Ole Frithjof Norheim et al. (2014). Availability and access in modern obstetric care: a retrospective population-based study. (ekstern lenke)
• Kari Klungsøyr Melve; Nils-Halvdan Morken; Lorentz M. Irgens et al. (2012). Secular trends in the epidemiology of pre-eclampsia throughout 40 years in Norway: prevalence, risk factors and perinatal survival. (ekstern lenke)
• Lina Herstad; Kari Klungsøyr; Rolv Skjaerven et al. (2015). Maternal age and emergency operative deliveries at term: a population-based registry study among low-risk primiparous women. (ekstern lenke)
• Quaker E Harmon; Lisu Huang; David M Umbach et al. (2015). Risk of fetal death with preeclampsia. (ekstern lenke)
• Kate E. Best; Judith Rankin; Helen Dolk et al. (2020). Multilevel analyses of related public health indicators: The European Surveillance of Congenital Anomalies (EUROCAT) Public Health Indicators. (ekstern lenke)
• Linn Marie Sørbye; Kari Klungsøyr; Oddrun Samdal et al. (2015). Pre-pregnant body mass index and recreational physical activity: effects on perinatal mortality in a prospective pregnancy cohort. (ekstern lenke)
• Kathrine Bang Madsen; Henrik Larsson; Charlotte Skoglund et al. (2025). In utero exposure to methylphenidate, amphetamines and atomoxetine and offspring neurodevelopmental disorders – a population-based cohort study and meta-analysis. (ekstern lenke)
• Michael C. Honigberg; Hilde Kristin Refvik Riise; Anne Kjersti Daltveit et al. (2020). Heart failure in women with hypertensive disorders of pregnancy: Insights from the cardiovascular disease in Norway project. (ekstern lenke)
• Trude Gildestad; Tone Bjørge; Øystein Ariansen Haaland et al. (2020). Maternal use of folic acid and multivitamin supplements and infant risk of birth defects in Norway, 1999–2013. (ekstern lenke)
• Lina Herstad; Kari Klungsøyr Melve; Rolv Skjaerven et al. (2012). Maternal age and elective cesarean section in a low-risk population. (ekstern lenke)
• Johanne Telnes Instanes; Anne Halmøy; Anders Engeland et al. (2017). Attention-deficit/hyperactivity disorder in offspring of mothers with inflammatory and immune system diseases. (ekstern lenke)
• Mika Gissler; Mélanie Durox; Lucy Smith et al. (2022). Clarity and consistency in stillbirth reporting in Europe: why is it so hard to get this right?. (ekstern lenke)
• Hilde Marie Engjom; Nils-Halvdan Morken; Even Høydahl et al. (2017). Increased risk of peripartum perinatal mortality in unplanned births outside an institution: a retrospective population-based study. (ekstern lenke)
• Tone I Nordtveit; Kari Klungsøyr; Rolv Skjærven (2010). Mothers' and fathers' birth characteristics and perinatal mortality in their offspring: a population-based cohort study. (ekstern lenke)
• Grace M. Egeland; Svetlana Skurtveit; Anne Cathrine Staff et al. (2018). Pregnancy-related risk factors are associated with a significant burden of treated hypertension within 10 years of delivery: Findings from a population-based Norwegian Cohort. (ekstern lenke)
• Lotte Berdiin Colmorn; Jens Langhoff-Roos; Maija Jakobsson et al. (2017). National Rates of Uterine Rupture are not Associated with Rates of Previous Caesarean Delivery: Results from the Nordic Obstetric Surveillance Study. (ekstern lenke)
• Kate E. Best; Marie-Claude Addor; Larraitz Arriola et al. (2014). Hirschsprung's disease prevalence in Europe: A register based study. (ekstern lenke)
• Elisabet Rudjord Hillesund; Nina Cecilie Øverby; Stephanie M Engel et al. (2014). Associations of adherence to the New Nordic Diet with risk of preeclampsia and preterm delivery in the Norwegian Mother and Child Cohort Study (MoBa). (ekstern lenke)
• Grace M. Egeland; Kari Klungsøyr; Nina Øyen et al. (2016). Preconception cardiovascular risk factor differences between gestational hypertension and preeclampsia: Cohort Norway study. (ekstern lenke)
• Marie Delnord; Béatrice Blondel; Nicolas Drewniak et al. (2014). Varying gestational age patterns in cesarean delivery: An international comparison. (ekstern lenke)
• Janet W Rich-Edwards; Kari Klungsøyr; Allen J. Wilcox et al. (2015). Duration of pregnancy, even at term, predicts long-term risk of coronary heart disease and stroke mortality in women: a population-based study. (ekstern lenke)
• Linda Lindström; Rolv Skjaerven; Eva Bergman et al. (2017). Chronic hypertension in women after perinatal exposure to preeclampsia, being born small for gestational age or preterm. (ekstern lenke)
• Astrid Lunde; Kari Klungsøyr Melve; Håkon K. Gjessing et al. (2007). Genetic and environmental influences on birth weight, birth length, head circumference and gestational age using population based parent-offspring data. (ekstern lenke)
• Janneke Jentink; Helen Dolk; Maria A. Loane et al. (2010). Intrauterine exposure to carbamazepine and specific congenital malformations: systematic review and case-control study. (ekstern lenke)
• Ester Garne; Shona Goldsmith; Ingeborg Barisic et al. (2023). Severe Congenital Heart Defects and Cerebral Palsy. (ekstern lenke)
• Marie Delnord; Ashna D. Hindori-Mohangoo; Lucy Smith et al. (2016). Variations in very preterm birth rates in 30 high- income countries: are valid international compari sons possible using routine data?. (ekstern lenke)
• Anthony Wemakor; Karen Casson; Ester Garne et al. (2015). Selective serotonin reuptake inhibitor antidepressant use in first trimester pregnancy and risk of specific congenital anomalies: a European register-based study. (ekstern lenke)
• Ingeborg Barisic; Ljubica Odak; Maria Loane et al. (2014). Prevalence, prenatal diagnosis and clinical features of oculo-auriculo-vertebral spectrum: A registry-based study in Europe. (ekstern lenke)
• Romy van de Putte; Iris A.L.M. van Rooij; Carlo L.M. Marcelis et al. (2019). Spectrum of congenital anomalies among VACTERL cases: a EUROCAT population-based study. (ekstern lenke)
• Svetlana V. Glinianaia; Judith Rankin; Anna Pierini et al. (2022). Ten-Year Survival of Children With Congenital Anomalies: A European Cohort Study. (ekstern lenke)
• Grace M. Egeland; Grethe S. Tell; Øyvind Næss et al. (2017). Association between pregravid physical activity and family history of stroke and risk of stillbirth: Population-based cohort study. (ekstern lenke)
• Reetta Varpula; Outi Äyräs; Anna J. M. Aabakke et al. (2024). Early suppression policies protected pregnant women from COVID-19 in 2020: A population-based surveillance from the Nordic countries. (ekstern lenke)
• Lars Thurn; Pelle G. Lindqvist; Maija Jakobsson et al. (2016). Abnormally invasive placenta—prevalence, risk factors and antenatal suspicion: results from a large population-based pregnancy cohort study in the Nordic countries. (ekstern lenke)
• Prativa Basnet; Rolv Skjaerven; Linn Marie Sørbye et al. (2022). Long-term cardiovascular mortality in women with twin pregnancies by lifetime reproductive history. (ekstern lenke)
• Maria Valentina Abate; Ingeborg Barisic; Michele Santoro et al. (2025). Health outcomes of children with Prader-Willi or Angelman syndromes: a European population-based multicentre study. (ekstern lenke)
• Chloe Sage Wyatt; Rolv Skjaerven; Lars Johan Vatten et al. (2025). Hypertensive Disorders of Pregnancy, Preterm Delivery, and Infant Size: Which Mothers Have Highest Cardiovascular Disease Mortality?. (ekstern lenke)
• Anders Engeland; Tone Bjørge; Kari Klungsøyr et al. (2015). Preeclampsia in pregnancy and later use of antihypertensive drugs. (ekstern lenke)
• Anna Springett; Diana Wellesley; Ruth Greenlees et al. (2015). Congenital anomalies associated with trisomy 18 or trisomy 13: A registry-based study in 16 european countries, 2000-2011. (ekstern lenke)
• Kari Klungsøyr Melve; A Bærheim (1994). Signs of subclinical eating disorders in teenage girls. (ekstern lenke)
• Kari Klungsøyr; Tone Irene Nordtveit; Trine Sand Kaastad et al. (2019). Epidemiology of limb reduction defects as registered in the Medical Birth Registry of Norway, 1970-2016: Population based study. (ekstern lenke)
• Sage Wyatt; Liv Grimstvedt Kvalvik; Aditi Singh et al. (2024). Heterogeneity in the risk of cardiovascular disease mortality after the hypertensive disorders of pregnancy across mothers' lifetime reproductive history. (ekstern lenke)
• Yeneabeba Tilahun Sima; Maria Christine Magnus; Liv Grimstvedt Kvalvik et al. (2023). The relationship between cesarean delivery and fecundability: a population-based cohort study. (ekstern lenke)
• Romy van de Putte; Iris A.L.M. van Rooij; Cynthia P. Haanappel et al. (2020). Maternal risk factors for the VACTERL association: A EUROCAT case-control study. (ekstern lenke)
• Berit Skretting Solberg; Anne Halmøy; Anders Engeland et al. (2017). Gender differences in psychiatric comorbidity: a population-based study of 40 000 adults with attention deficit hyperactivity disorder. (ekstern lenke)
• Prativa Basnet; Rolv Skjaerven; Quaker E. Harmon et al. (2023). Birthweight of the subsequent singleton pregnancy following a first twin or singleton pregnancy. (ekstern lenke)
• Joanne E. Given; Maria Loane; Ester Garne et al. (2018). Metformin exposure in first trimester of pregnancy and risk of all or specific congenital anomalies: exploratory case-control study. (ekstern lenke)
• Nils-Halvdan Morken; Kari Klungsøyr Melve; Rolv Skjaerven (2011). Recurrence of prolonged and post-term gestational age across generations: maternal and paternal contribution. (ekstern lenke)
• Anne Halmøy; Kari Klungsøyr Melve; Rolv Skjaerven et al. (2012). Pre- and perinatal risk factors in adults with attention-deficit/hyperactivity disorder. (ekstern lenke)
• Margareta Isabell Brikell; Honghui Yao; Lin Li et al. (2023). ADHD medication discontinuation and persistence across the lifespan: a retrospective observational study using population-based databases. (ekstern lenke)
• Jorieke E. H. Bergman; L Renee Lutke; Rijk O B Gans et al. (2017). Beta-Blocker Use in Pregnancy and Risk of Specific Congenital Anomalies: A European Case-Malformed Control Study. (ekstern lenke)
• Berit Skretting Solberg; Tor-Arne Hegvik; Anne Halmøy et al. (2020). Sex differences in parent–offspring recurrence of attention-deficit/hyperactivity disorder. (ekstern lenke)
• Laust H. Mortensen; Sven Cnattingius; Mika Gissler et al. (2020). Sex of the first-born and obstetric complications in the subsequent birth. A study of 2.3 million second births from Denmark, Finland, Norway, and Sweden. (ekstern lenke)
• Maria Loane; Joanne E. Given; J. Tan et al. (2021). Linking a European cohort of children born with congenital anomalies to vital statistics and mortality records: A EUROlinkCAT study. (ekstern lenke)
• Anna E Bauer; Christy L Avery; Min Shi et al. (2018). A Family Based Study of Carbon Monoxide and Nitric Oxide Signalling Genes and Preeclampsia. (ekstern lenke)
• Liv Grimstvedt Kvalvik; Rolv Skjaerven; Kari Klungsøyr et al. (2015). Can 'early programming' be partly explained by smoking? Results from a prospective, population-based cohort study. (ekstern lenke)
• Joachim Tan; Svetlana V. Glinianaia; Judith Rankin et al. (2023). Risk factors for mortality in infancy and childhood in children with major congenital anomalies: A European population-based cohort study. (ekstern lenke)
• Johanne Telnes Instanes; Berit Skretting Solberg; Liv Grimstvedt Kvalvik et al. (2024). Organic food consumption during pregnancy and symptoms of neurodevelopmental disorders at 8 years of age in the offspring: the Norwegian Mother, Father and Child Cohort Study (MoBa). (ekstern lenke)
• Lea A Cupul-Uicab; Rolv Skjaerven; Kjell Haug et al. (2012). In utero exposure to maternal tobacco smoke and subsequent obesity, hypertension, and gestational diabetes among women in the MoBa Cohort. (ekstern lenke)
• Gabriella Bröms; Sonia Hernandez-Diaz; Krista F. Huybrechts et al. (2023). Atomoxetine in Early Pregnancy and the Prevalence of Major Congenital Malformations: A Multinational Study. (ekstern lenke)
• Anne P. Starling; Stephanie M. Engel; David B. Richardson et al. (2014). Perfluoroalkyl substances during pregnancy and validated preeclampsia among nulliparous women in the Norwegian mother and child cohort study. (ekstern lenke)
• Anne Tandberg; Kari Klungsøyr; Liv Bente Romundstad et al. (2015). Pre-eclampsia and assisted reproductive technologies: Consequences of advanced maternal age, interbirth intervals, new partner and smoking habits. (ekstern lenke)
• Jorieke E. H. Bergman; Ingeborg Barišić; Marie-Claude Addor et al. (2022). Amniotic band syndrome and limb body wall complex in Europe 1980–2019. (ekstern lenke)
• Liv Cecilie Vestrheim Thomsen; Linda Tømmerdal Roten; Kari Klungsøyr et al. (2013). Validity of pre-eclampsia diagnosis in Medical Birth Registry of Norway. (ekstern lenke)
• Ann-Louise Rud Andersen; Stine Kjaer Urhoj; Joachim Tan et al. (2023). The burden of disease for children born alive with Turner syndrome—A European cohort study. (ekstern lenke)
• Lotte Berdiin Colmorn; Kathrine Birch Petersen; Maija Jakobsson et al. (2015). The Nordic Obstetric Surveillance Study: A study of complete uterine rupture, abnormally invasive placenta, peripartum hysterectomy, and severe blood loss at delivery. (ekstern lenke)
• Svetlana V. Glinianaia; Judith Rankin; Joachim Tan et al. (2023). Ten-year survival of children with trisomy 13 or trisomy 18: A multi-registry European cohort study. (ekstern lenke)
• Sue Jordan; Joan K Morris; Gareth I. Davies et al. (2016). Selective Serotonin Reuptake Inhibitor (SSRI) antidepressants in pregnancy and congenital anomalies: Analysis of linked databases in Wales, Norway and Funen, Denmark. (ekstern lenke)
• Chrysovalanto Mamasoula; Theophile Bigirumurame; Thomas Chadwick et al. (2023). Maternal age and the prevalence of congenital heart defects in Europe, 1995–2015: A register-based study. (ekstern lenke)
• Tor-Arne Hegvik; Qi Chen; Ralf Kuja-Halkola et al. (2021). Familial co-Aggregation of attention-deficit/hyperactivity disorder and autoimmune diseases: A cohort study based on Swedish population-wide registers. (ekstern lenke)
• Victor Sartorius; Marianne Philibert; Kari Klungsøyr et al. (2024). Neonatal Mortality Disparities by Gestational Age in European Countries. (ekstern lenke)
• Mohammad Jalil Sharifian; Jannicke Igland; Kari Klungsøyr et al. (2024). Incidence trends of adult glioma in Norway and its association with occupation and education: A registry-based cohort study. (ekstern lenke)
• Nils-Halvdan Morken; Kari Klungsøyr Melve; Per Magnus et al. (2013). Pre-pregnant body mass index, gestational weight gain and the risk of operative delivery. (ekstern lenke)
• Ida Neergård Sletten; Kari Klungsøyr; Andrew Garratt et al. (2023). Patient-reported function, quality of life and prosthesis wear in adults born with one hand: a national cohort study. (ekstern lenke)
• Michele Santoro; Ingeborg Barisic; Alessio Coi et al. (2025). Health outcomes and drug utilisation in children with Noonan syndrome: a European cohort study. (ekstern lenke)
• Berit Skretting Solberg; Liv Grimstvedt Kvalvik; Johanne Telnes Instanes et al. (2023). Maternal Fiber Intake During Pregnancy and Development of Attention-Deficit/Hyperactivity Disorder Symptoms Across Childhood: The Norwegian Mother, Father, and Child Cohort Study. (ekstern lenke)
• Rachel A. Charlton; Amanda J. Neville; Sue Jordan et al. (2014). Healthcare databases in Europe for studying medicine use and safety during pregnancy. (ekstern lenke)
• Kari Klungsøyr Melve; Rolv Terje Lie; Rolv Skjærven et al. (2008). Registration of Down syndrome in the Medical Birth Registry of Norway: Validity and time trends. (ekstern lenke)
• Ester Garne; Anne Vinkel Hansen; Joan Morris et al. (2015). Use of asthma medication during pregnancy and risk of specific congenital anomalies: A European case-malformed control study. (ekstern lenke)
• Aminkeng Zawuo Leke; Helen Dolk; Maria Loane et al. (2021). Macrolide and lincosamide antibiotic exposure in the first trimester of pregnancy and risk of congenital anomaly: A European case-control study. (ekstern lenke)
• Maxi S. Kniffka; Jonas Schöley; Susie Lee et al. (2025). Stillbirth rate trends across 25 European countries between 2010 and 2021: the contribution of maternal age and multiplicity. (ekstern lenke)
• Anders Engeland; Tone Bjørge; Kari Klungsøyr et al. (2017). Preterm births and use of medication in early adulthood: a population-based registry study. (ekstern lenke)

Vitenskapelig litteraturgjennomgang

• Catharina A. Hartman; Henrik Larsson; Melissa Vos et al. (2023). Anxiety, mood, and substance use disorders in adult men and women with and without attention-deficit/hyperactivity disorder: A substantive and methodological overview. (ekstern lenke)
• Joan K. Morris; Anna L. Springett; Ruth Greenlees et al. (2018). Trends in congenital anomalies in Europe from 1980 to 2012. (ekstern lenke)
• Cande V. Ananth; Rolv Skjaerven; Kari Klungsøyr (2015). Change in paternity, risk of placental abruption and confounding by birth interval: A population-based prospective cohort study in Norway, 1967-2009. (ekstern lenke)
• Béatrice Blondel; Sophie Alexander; Ragnheidur I. Bjarnadottir et al. (2016). Variations in rates of severe perineal tears an d episiotomies in 20 European countries: a study based on routine national data in Euro-Peristat Project. (ekstern lenke)

Doktorgradsavhandling

• Berit Skretting Solberg; Kari Klungsøyr; Jan Haavik et al. (2020). Attention-deficit/hyperactivity disorder; sex differences in psychiatric comorbidity and transgenerational recurrence risks : A population-based study using Norwegian registry data. (ekstern lenke)
• Tone Irene Nordtveit; Kari Klungsøyr; Rolv Skjaerven (2010). Generations, reproduction and birth outcome. A registry-based cohort study in Norway 1967-2006. (ekstern lenke)
• Dagrun Slettebø Daltveit; Tone Bjørge; Kari Klungsøyr (2024). Birth defects and cancer risk : Nordic population-based studies of cancer risk in children, adolescents, and adults with major birth defects and their siblings. (ekstern lenke)
• Linn Marie Sørbye; Nils-Halvdan Morken; Kari Klungsøyr (2019). Maternal weight, weight change and perinatal outcomes: Can physical activity and gestational weight gain modify the risk?. (ekstern lenke)
• Hilde Marie Engjom; Ole Frithjof Norheim; Bernt Lindtjorn et al. (2018). Obstetric care in Norway - the role of institution availability and place of delivery for maternal and perinatal outcomes. Population-based retrospective cohort studies. (ekstern lenke)
• Kari Klungsøyr Melve (2003). Pregnancy outcome and family data: Heterogeneity of risk, and sibling dependencies. Epidemiological studies of births in Norway, 1967-1998. (ekstern lenke)

Konferanseabstrakt

• Liv Grimstvedt Kvalvik; Rolv Skjaerven; Kari Klungsøyr Melve et al. (2013). Low birth weight babies are more often smokers as adults. (ekstern lenke)
• Lotte Berdiin Colmorn; Kathrine Birch Petersen; Maija Jakobsson et al. (2012). Nordic Obstetric Surveillance Study (NOSS). Preliminary results and perspectives. (ekstern lenke)
• Kari Klungsøyr; Rolv Terje Lie; Rolv Skjærven et al. (2008). Registration of Down's syndrome in the medical birth registry of Norway; validity and time trends. (ekstern lenke)
• Hilde Marie Engjom; Nils-Halvdan Morken; Ole Frithjof Norheim et al. (2013). Availability and access in modern obstetric care: a retrospective population-based cohort study. (ekstern lenke)
• Kari Klungsøyr; Rolv Skjaerven; Anne Tandberg et al. (2012). IS INCREASED PERINATAL MORTALITY FOR THE SECOND TWIN RELATED TO ASSISTED REPRODUCTIVE TECHNIQUES? A POPULATION BASED COHORT STUDY FROM NORWAY, 1988-2008. (ekstern lenke)
• Joanne E. Given; Maria Loane; Ester Garne et al. (2018). Metformin exposure in the first trimester of pregnancy and risk of all or specific congenital anomalies: Exploratory case-control study. (ekstern lenke)
• Rolv Skjaerven; Allen J. Wilcox; Kari Klungsøyr Melve et al. (2007). Preeclampsia and long-term maternal mortality. (ekstern lenke)
• Liv Cecilie Vestrheim; Rigmor Austgulen; Kari Klungsøyr Melve et al. (2010). Classification of pre-eclamptic pregnancies in health registries. An evaluation of criteria selected and pregnancies included in the Medical Birth Registry of Norway. (ekstern lenke)
• Kari Klungsøyr Melve; Rolv T. Lie; Rolv Skjaerven et al. (2009). Down Syndrome registration in the Medical Birth Registry of Norway: Validity and time trends. (ekstern lenke)
• Kari Klungsøyr Melve; Rolv Skjaerven (2007). Recurrence of stillbirth by gestational age. (ekstern lenke)
• Anne Tandberg; Kari Klungsøyr Melve; Rolv Skjaerven (2012). Risk of preeclampsia in pregnancies from assisted reproductive technologies. (ekstern lenke)

Forskningsrapport

• Marta Ebbing; Kari Klungsøyr Melve (2013). Årstabeller for Medisinsk fødselsregister 2011. Fødsler i Norge. (ekstern lenke)
• Liv Cecilie Vestrheim Thomsen; Anne Kjersti Nesje Daltveit; Pétur Benedikt Juliusson et al. (2023). Årsrapport for Medisinsk fødselsregister 2022. Svangerskap og fødsler i Norge. (ekstern lenke)
• Liv Cecilie Vestrheim Thomsen; Anne Kjersti Nesje Daltveit; Kristine Tønder Krogvik et al. (2024). Årsrapport for Medisinsk fødselsregister 2023. Svangerskap og fødsler i Norge. (ekstern lenke)
• Ann-Mari Brubakk; Kristin Tømmervik; Kari Slinning et al. (2005). Alkohol og graviditet: Hva er farlig for fosteret? Hvordan forebygge og behandle? Rapport fra en ekspertgruppe (IS-1284). (ekstern lenke)
• Ana Duerr; Dag Moster; Ingvei Helen Seliussen et al. (2014). Årstabeller for Medisinsk fødselsregister 2012. Fødsler i Norge. (ekstern lenke)
• Vigdis Lauvrak; Inger Natvig Norderhaug; Gunhild Hagen et al. (2012). Tidlig ultralyd i svangerskapsomsorgen. (ekstern lenke)

Lederartikkel

• Jens Langhoff-Roos; Lone Krebs; Kari Klungsøyr et al. (2014). The Nordic medical birth registers - a potential goldmine for clinical research. (ekstern lenke)
• Nils-Halvdan Morken; Kari Klungsøyr Melve; Rolv Skjaerven (2012). Recurrence of Prolonged and Postterm Gestational Age Across Generations: Maternal and Paternal Contribution EDITORIAL COMMENT. (ekstern lenke)

Leserbrev

• Hilde Marie Engjom; Nils-Halvdan Morken; Kari Klungsøyr (2018). Risiko for peripartum perinatal død ved fødsler i fødestue. (ekstern lenke)
• Hilde Marie Engjom; Nils-Halvdan Morken; Kari Klungsøyr (2017). Reply. (ekstern lenke)
• Marta Ebbing; Kari Klungsøyr (2014). Re: Antiepileptika og medfødte misdannelser :. (ekstern lenke)
• Camilla Tjønneland Mentzoni; Kari Klungsøyr; Hilde Marie Engjom (2024). Author Reply. (ekstern lenke)

Fagartikkel

• Kari Klungsøyr (2016). Melding til Medisinsk fødselsregister – fra 1967 og fram til dagens moderniseringsprosjekt. (ekstern lenke)

Rettelse i tidsskrift

• Tor-Arne Hegvik; Johanne Telnes Instanes; Jan Haavik et al. (2017). Correction to: Associations between attention-deficit/hyperactivity disorder and autoimmune diseases are modified by sex: a population-based cross-sectional study. (ekstern lenke)

Populærvitenskapelig artikkel

• Dagrun Slettebø Daltveit; Anders Engeland; Kari Klungsøyr et al. (2020). Medfødte misdannelser gir økt risiko for kreft. (ekstern lenke)
• Kari Klungsøyr Melve (1994). Pasienter med spiseforstyrrelser – Hva kan gjøres i allmennpraksis?. (ekstern lenke)

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Ongoing projects:

2023 -: Nytt prosjekt, informasjon kommer i desember

2022 -: "Men's health factors and risk of fetal loss and stillbirth". Rolle: Prosjekt leder. Finansiering: Landsforeningen Uventet Barnedød 

2021 -: "OCiNOR" - Obstetric Care in Norway - a Collaborative and Knowledge-building project". Rolle: Prosjekt leder - Finansiering: Norges forskningsråd

2020 -: "TIMESPAN" - Management of chronic cardiometabolic disease and treatment discontinuity in adult ADHD patients". Rolle: Arbeidspakke leder. Finansiering: EU  

2019/2020 -: "GlioLink" - Improving prognosis of patients with glioblastoma: Linking health registry and clinical data to basic brain tumour research". Rolle: Partner/veileder. Finansiering: Kreftforeningen/ Norges forskningsråd

2020 - : "NEDCOM" - Neurodevelopmental disorders and comorbidity - sex differences, risk factors and functional aspects from childhood to adulthood. Rolle: Prosjekt leder. Finansiering: flere, inklusivt NEVSOM 

2019 -: “Healthier Women” - A woman´s reproductive experience. Long term implications for chronic disease and death. Rolle: Partner/ veileder. Finansiering: EU - ERC Advanced grant til prof Rolv Skjærven. 

2016 -: "Congenital limb reduction defects in Norway - epidemiology, risk factors and treatment". Rolle: Prosjekt leder Del I, Partner Del II. Samarbeidsprosjekt med Rikshospitalet, Oslo universitetssykehus

2014 -: "Cancer risk in families with children with birth defects: a Nordic collaboration". Rolle: Partner/ veileder. Finanisering: Kreftforeningen