Doktorgradsavhandling

• Arne Kodal; Ingvar Bjelland; Gro Janne Wergeland et al. (2018). Long-term effectiveness of cognitive behavior therapy for youth with anxiety disorders: Outcome, predictors and social anxiety. (ekstern lenke)
• Ingvar Bjelland; Grethe S Tell; Alv A Dahl (2004). Anxiety and depression in the general population : issues related to assessment, comorbidity, and risk factors. (ekstern lenke)

Fremhevet artikkel i media

• Ingvar Bjelland; Alv A Dahl (2008). Dimensjonal diagnostikk ny klassifisering av psykiske lidelser. (ekstern lenke)

Konferanseabstrakt

• Gunhild Felde; Ingvar Bjelland; Steinar Hunskaar (2009). ANXIETY AND DEPRESSION ASSOCIATED WITH INCONTINENCE IN MIDDLE AGED WOMEN. (ekstern lenke)
• MB Raeder; Ingvar Bjelland; J Ferno et al. (2006). Lipogenic effects of antidepressant drugs: Transcriptional stimulation of cellular lipid biosynthesis is a potential marker of drug-induced metabolic side-effects. (ekstern lenke)
• Ingvar Bjelland; S Krokstad; Arnstein Mykletun et al. (2004). Education as a predictor for anxiety and depression - a population-based cohort study. (ekstern lenke)
• Reidar Tyssen; Per Jørgen Wiggen Vaglum; Jan Ole Røvik et al. (2004). Prevalence and predictors of depressive symptoms among Norwegian physicians: A 10-year longitudinal study. (ekstern lenke)

Konferanseforedrag

• Tore Hofstad; Olav Nyttingnes; Anne Hege Henden Strand et al. (2024). Tic Talk: Ten years later – Long term outcomes for Tourette’s and Tic Disorders. (ekstern lenke)
• Reidar Tyssen; Kariann Mjelde Røsbak; Line Kjær Løvereide et al. (2010). Mental distress among medical students and university college students: the role of gender. (ekstern lenke)
• Reidar Tyssen; Karianne Mjelde Olsen; Line Kjær Løvereide et al. (2007). Do medical students experience more stress and depressive symptoms than other students do?. (ekstern lenke)
• Reidar Tyssen; Per Jørgen Wiggen Vaglum; Jan Ole Røvik et al. (2005). Depressive symptoms among Norwegian physicians: a 10-year longitudinal study of prevalence and predictors. (ekstern lenke)
• Reidar Tyssen; Per Jørgen Wiggen Vaglum; Jan Ole Røvik et al. (2004). Prevalence and predictors of depressive symptoms among Norwegian physicians: a 10-year longitudinal study. (ekstern lenke)
• Ingvar Bjelland (2004). Symptomer på nevroutviklingsforstyrrelser hos barn med emosjonelle vansker � Barn i Bergen studien. (ekstern lenke)
• Reidar Tyssen; Per Vaglum; JO Røvik et al. (2004). Prevalence and predictors of depressive symptoms among Norwegian physicians: A 10-year longitudinal study. (ekstern lenke)
• Ingvar Bjelland; Steinar Krokstad; Arnstein Mykletun et al. (2004). Education as a predictor for anxiety and depression � a population-based cohort study. (ekstern lenke)
• Bjørn Hildrum; Arnstein Mykletun; Eystein Stordal et al. (2004). There is a relation between low blood pressure and anxiety/depression. (ekstern lenke)
• Reidar Tyssen; Per Jørgen Wiggen Vaglum; Jan Ole Røvik et al. (2004). Depressive Symptoms among Norwegian Physicians: a 10-Year Longitudinal Study of Prevalence and Predictors. (ekstern lenke)
• Ingvar Bjelland (2003). Associations between neurodevelopemental and emotional problems. (ekstern lenke)
• Ingvar Bjelland; Grethe Seppola Tell; Stein Emil Vollset et al. (2002). Homocystein og depresjon. (ekstern lenke)
• Ingvar Bjelland (2002). Brukerundersøkelsen, BUP Sentrum. (ekstern lenke)
• Ingvar Bjelland; Grethe Seppola Tell; Stein Emil Vollset et al. (2002). Folate, B12, homocysteine and MTHFR C677T polymorphism in anxiety and depression. (ekstern lenke)
• Ingvar Bjelland (2002). The user inquiry, BUP-Sentrum. (ekstern lenke)
• Ingvar Bjelland; Grethe Seppola Tell; Stein Emil Vollset et al. (2002). Symptoms of anxiety and depression among subjects with elevated plasma homocysteine or lowered plasma folate in a population sample. (ekstern lenke)

Konferanseposter

• Heike Eichele; Tom Eichele; Ingvar Bjelland et al. (2015). Cognitive and Behavioral Control in Children with Tourette Syndrome. (ekstern lenke)
• Gro Janne Henningsen Wergeland; Krister Westlye Fjermestad; C. E. Marin et al. (2014). Predictors of treatment outcome.. (ekstern lenke)
• Heike Eichele; Tom Eichele; Ingvar Bjelland et al. (2011). Cognitive and Behavioral Control in Children with Tourette Syndrome. (ekstern lenke)
• Reidar Tyssen; Karianne M Røsbak; Line Kjær Løvereide et al. (2010). Mental distress among medical students and university college students: The role of gender. (ekstern lenke)
• Kerstin J. Plessen; Lin Sørensen; Heike Eichele et al. (2009). Emotional regulation in children with ADHD - a longitudinal study. (ekstern lenke)
• Ingvar Bjelland; Grethe Seppola Tell; Stein Emil Vollset et al. (2002). Folate, vitamin B12, homocysteine and MTHFR C677T polymorphism in anxiety and depression. (ekstern lenke)
• Ingvar Bjelland; Grethe Seppola Tell; Stein Emil Vollset (2002). Hyperhomocysteinemia is associated with depression, but not axiety. (ekstern lenke)
• Ingvar Bjelland; Grethe Tell; Stein Emil Vollset et al. (2002). The C677T polymorphism of the methylenetetrahydrofolate reductase (MTHFR) gene is associated with depression, but not anxiety. (ekstern lenke)
• I Bjelland; Eystein Stordal; A Mykletun et al. (2001). Anxiety and depression co-dimensionality in the general population. (ekstern lenke)

Studieprotokoll

• Ingvar Bjelland; Gro Janne Henningsen Wergeland; Christopher Gillberg et al. (2025). PRO-DIALOG—the effect of a novel dialogue-based parent-teacher conference on mental health in kindergarten children: a cluster randomized controlled trial. (ekstern lenke)

Vitenskapelig artikkel

• Miguel Garcia argibay; Tore Hofstad; Ingvar Bjelland et al. (2026). ADHD medication discontinuation and non-adherence: a Norwegian population-based register study. (ekstern lenke)
• Ashmita Chaulagain; Tarjei Widding-Havnerås; Felix Elwert et al. (2026). Effect of pharmacological treatment of attention–deficit hyperactivity disorder on contacts with child welfare services. (ekstern lenke)
• Ashmita Chaulagain; Tarjei Widding-Havnerås; Ingvild Lyhmann et al. (2025). Lifetime Contacts with Child Welfare Services among Children and Adolescents with ADHD: A Population-Based Registry Study. (ekstern lenke)
• Tore Hofstad; Olav Nyttingnes; Ingvar Bjelland et al. (2025). Catchment area characteristics do not account for geographical variation in ADHD diagnoses. (ekstern lenke)
• Ingvild Lyhmann; Tarjei Widding-Havnerås; Ingvar Bjelland et al. (2024). Effect of pharmacological treatment of attention-deficit/hyperactivity disorder on later psychiatric comorbidity: a population-based prospective long-term study. (ekstern lenke)
• Tarjei Widding-Havnerås; Henrik Daae Zachrisson; Simen Markussen et al. (2023). Effect of Pharmacological Treatment of Attention-Deficit/Hyperactivity Disorder on Criminality. (ekstern lenke)
• Tarjei Widding-Havnerås; Felix Elwert; Simen Markussen et al. (2023). Effect of ADHD medication on risk of injuries: a preference-based instrumental variable analysis. (ekstern lenke)
• Ingvild Lyhmann; Tarjei Widding-Havnerås; Henrik Daae Zachrisson et al. (2022). Variation in attitudes toward diagnosis and medication of ADHD: a survey among clinicians in the Norwegian child and adolescent mental health services. (ekstern lenke)
• Tarjei Widding-Havneraas; Simen Markussen; Felix Elwert et al. (2022). Geographical variation in ADHD: do diagnoses reflect symptom levels?. (ekstern lenke)
• Ingvar Bjelland; Maj-Britt Rocio Posserud; Gro Janne Henningsen Wergeland (2022). Dialogue based early detection—Development of a novel approach for detection of mental health problems among children in daycare centers. (ekstern lenke)
• Arnstein Mykletun; Tarjei Widding-Havneraas; Ashmita Chaulagain et al. (2021). Causal modelling of variation in clinical practice and long-term outcomes of ADHD using Norwegian registry data: The ADHD controversy project. (ekstern lenke)
• Krister Fjermestad; Christina Lium; Einar Heiervang et al. (2020). Parental internalizing symptoms as predictors of anxiety symptoms in clinic-referred children. (ekstern lenke)
• Gry Lill Hamre; Reidunn Huus; Bente Storm Mowatt Haugland et al. (2019). Fedres deltagelse i utredning og behandling av barn og ungdom med angstlidelse. (ekstern lenke)
• Arne Kodal; Krister Fjermestad; Ingvar Bjelland et al. (2018). Predictors of long-term outcome of CBT for youth with anxiety disorders treated in community clinics. (ekstern lenke)
• Arne Kodal; Ingvar Bjelland; Rolf Gjestad et al. (2017). Subtyping social anxiety in youth. (ekstern lenke)
• Arne Kodal; Krister Fjermestad; Ingvar Bjelland et al. (2017). Long-term effectiveness of cognitive behavioral therapy for youth with anxiety disorders. (ekstern lenke)
• Elisabeth Jeppesen; Ingvar Bjelland; Sophie Dorothea Fosså et al. (2016). Health-related quality of life in teenagers with a parent with cancer. (ekstern lenke)
• Heike Eichele; Tom Eichele; Ingvar Bjelland et al. (2016). Performance monitoring in medication-naïve children with Tourette Syndrome. (ekstern lenke)
• Gro Janne Wergeland; Krister Fjermestad; Carla E. Marin et al. (2016). Predictors of treatment outcome in an effectiveness trial of cognitive behavioral therapy for children with anxiety disorders. (ekstern lenke)
• Gro Janne Henningsen Wergeland; Krister Fjermestad; Carla E. Marin et al. (2014). An effectiveness study of individual vs. group cognitive behavioral therapy for anxiety disorders in youth. (ekstern lenke)
• Elisabeth Jeppesen; Ingvar Bjelland; Sophie Dorothea Fosså et al. (2014). Does a parental history of cancer moderate the associations between impaired health status in parents and psychosocial problems in teenagers: a HUNT study.. (ekstern lenke)
• Elisabeth Jeppesen; Ingvar Bjelland; Sophie Dorothea Fosså et al. (2013). Psychosocial problems of teenagers who have a parent with cancer: a population-based case-control study (Young-HUNT Study). (ekstern lenke)
• Eha Nurk; Helga Refsum; Ingvar Bjelland et al. (2013). Plasma free choline, betaine and cognitive performance: the Hordaland Health Study. (ekstern lenke)
• Anne Mari Sund; Ingvar Bjelland; Helge Holgersen et al. (2012). Depresjon hos barn og unge - med vekt på biologiske modeller. (ekstern lenke)
• Anne Mari Sund; Ingvar Bjelland; Helge Holgersen et al. (2012). Om depresjon hos barn og unge med vekt på biologiske modeller. (ekstern lenke)
• Gunhild Felde; Ingvar Bjelland; Steinar Hunskaar (2012). Anxiety and depression associated with incontinence in middle-aged women: a large Norwegian cross-sectional study. (ekstern lenke)
• Karin Nordin; Afsaneh Hayat Roshanai; Cathrine Bjorvatn et al. (2011). Is genetic counseling a stressful event?. (ekstern lenke)
• Karstein Haldorsen; Ingvar Bjelland; Anne Isine Bolstad et al. (2011). A five-year prospective study of fatigue in primary Sjögren’s syndrome. (ekstern lenke)
• Felice N. Jacka; Arnstein Mykletun; Michael Berk et al. (2011). The association between habitual diet quality and the common mental disorders in community-dwelling adults: the Hordaland health study. (ekstern lenke)
• Felice N Jacka; Simon Øverland; Robert Stewart et al. (2009). Association between magnesium intake and depression and anxiety in community-dwelling adults: the Hordaland Health Study. (ekstern lenke)
• Ingvar Bjelland; Grethe S Tell; Stein Emil Vollset et al. (2009). Choline in anxiety and depression: the Hordaland Health Study. (ekstern lenke)
• Tove Aminda Hanssen; Jan Erik Nordrehaug; Geir Egil Eide et al. (2009). Anxiety and depression after acute myocardial infarction: an 18-month follow-up study with repeated measures and comparison with a reference population. (ekstern lenke)
• Ingvar Bjelland; Stein A Lie; Alv A Dahl et al. (2009). A dimensional versus a categorical approach to diagnosis: Anxiety and depression in the HUNT 2 study. (ekstern lenke)
• Bjørg Ulvik; Ingvar Bjelland; Berit Rokne Hanestad et al. (2008). Comparison of the Short Form 36 and the Hospital Anxiety and Depression Scale measuring emotional distress in patients admitted for elective coronary angiography. (ekstern lenke)
• Nicolas Øyane; Ingvar Bjelland; Ståle Pallesen et al. (2008). Seasonality is associated with anxiety and depression: The Hordaland health study. (ekstern lenke)
• Bjørg Ulvik; Ingvar Bjelland; Berit Rokne Hanestad et al. (2008). Comparison of the Short Form 36 and the Hospital Anxiety and Depression Scale measuring emotional distress in patients admitted for elective coronary angiography. (ekstern lenke)
• Ingvar Bjelland; Steinar Krokstad; Arnstein Mykletun et al. (2008). Does a higher educational level protect against anxiety and depression? The HUNT study. (ekstern lenke)
• Einar Heiervang; Kjell Morten Stormark; Astri Johansen Lundervold et al. (2007). Psychiatric disorders in Norwegian 8-to 10-year-olds: An epidemiological survey of prevalence, risk factors, and service use. (ekstern lenke)
• Maria Therese Barøy Ræder; Vidar Martin Steen; Stein Emil Vollset et al. (2007). Associations between cod liver oil use and symptoms of depression: The Hordaland Health Study. (ekstern lenke)
• Bjørn Hildrum; Arnstein Mykletun; Eystein Stordal et al. (2007). Association of low blood pressure with anxiety and depression: the Nord-Trondelag Health Study. (ekstern lenke)
• Maria Therese Barøy Ræder; Ingvar Bjelland; Stein Emil Vollset et al. (2006). Obesity, dyslipidemia, and diabetes with selective serotonin reuptake inhibitors: The Hordaland Health Study. (ekstern lenke)
• Helga Refsum; Eha Nurk; A.D. Smith et al. (2006). The hordaland homocysteine study: A community-based study of homocysteine, its determinants, and associations with disease. (ekstern lenke)
• Jon Skarstein; Ingvar Bjelland; Alv A Dahl et al. (2005). Is there an association between haemoglobin, depression, and anxiety in cancer patients?. (ekstern lenke)
• Ingvar Bjelland; Per Magne Ueland; Stein Emil Vollset (2003). Folate and depression. (ekstern lenke)
• Ingvar Bjelland; Grethe Seppola Tell; Stein Emil Vollset et al. (2003). Folate, Vitamin B12, Homocysteine, and the MTHFR 677C->T Polymorphism in Anxiety and Depression: The Hordaland Homocysteine Study. (ekstern lenke)
• Eystein Stordal; Ingvar Bjelland; Alf Dahl et al. (2003). Anxiety and depression in individuals with somatic health problems. The Nord-Trondelag Health Study (HUNT). (ekstern lenke)
• Ingvar Bjelland; Alv Andreas Dahl; Tone Tangen Haug et al. (2002). The validity of the Hospital Anxiety and Depression Scale: An updated literature review. (ekstern lenke)
• Alv Andreas Dahl; Ingvar Bjelland; Tor Jacob Moe et al. (2002). Etablering av en gruppe for psykiatrisk epidemiologisk forskning i Bergen. (ekstern lenke)
• Ingvar Bjelland; Alv Andreas Dahl (1999). Angst og depresjon - en vanlig blanding. (ekstern lenke)

Vitenskapelig bokkapittel

• Jon Fauskanger Bjåstad; Gro Janne Wergeland; Krister Fjermestad et al. (2016). Long-term outcome and predictors of outcome in CBT for youth anxiety. (ekstern lenke)
• Ingvar Bjelland (2012). Bipolare lidelser blant barn og unge. (ekstern lenke)

Vitenskapelig litteraturgjennomgang

• Ashmita Chaulagain; Ingvild Lyhmann; Anne Halmøy et al. (2023). A systematic meta-review of systematic reviews on attention deficit hyperactivity disorder. (ekstern lenke)
• Thomas Jozefiak; Ketil Hanssen-Bauer; Ingvar Bjelland (2018). Måleegenskaper ved den norske versjonen av Children’s Global Assessment Scale (CGAS). (ekstern lenke)

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