Academic article

• Benedicte Kirkøen; Astrid M.A. Eriksen; Ann Ragnhild Broderstad et al. (2026). Trends in anxiety and depressive symptoms among adults in Norway based on eight population-based surveys from 1995 to 2024. (external link)
• Robert Smith; Marit Knapstad; Leif Edvard Aarø (2026). Dynamics of Cognitions and Symptoms during Treatment: A Prospective Test of Beck’s Cognitive Theory of Depression. (external link)
• Jill Kristin Bjarke; Marit Knapstad; Rolf Gjestad et al. (2026). A pre-treatment comparison of referral pathways to guided ICBT for depression and anxiety disorders - A naturalistic study in routine clinical care. (external link)
• Robert Smith; Leif Edvard Aarø; Marit Knapstad (2026). Validation of the Norwegian version of the Brief Self Control Scale (BSCS) in patients who received treatment for common mental health problems. (external link)
• Marit Knapstad; Robert Smith (2026). Guided internet-based treatment for anxiety and depression in Norwegian primary care: a randomized non-inferiority effectiveness trial. (external link)
• Amanda Iselin Olesen Andersen; Marit Knapstad; Otto Robert Frans Smith (2025). Can registry-based auxiliary variables improve handling of missing outcome data in mental health trials? Evidence from a registry-linked randomized study. (external link)
• Robert Smith; Marit Knapstad; Leif Edvard Aarø (2025). Do we need two hammers in our toolbox? An empirical note about the potential redundancy of measuring subjective quality of life. (external link)
• Thomas Sevenius Nilsen; Marit Knapstad; Jens Christoffer Skogen et al. (2025). Non-response bias in the Norwegian Counties Public Health Survey: Insights from linkage to register data. (external link)
• Otto Robert Frans Smith; Marit Knapstad; Leif Edvard Aarø (2025). Minimizing patient burden in outcome monitoring: The case for abbreviated versions of PHQ-9, GAD-7 and WSAS. (external link)
• Otto Robert Frans Smith; David M. Clark; Gunnel Hensing et al. (2025). Cost-benefit of IAPT Norway and effects on work-related outcomes and health care utilization: Results from a randomized controlled trial using registry-based data. (external link)
• Tonje Catrin Hakvaag; Marit Knapstad; Tore Tjora (2025). Office Level Variation in Benefit Duration for Service Users Receiving Work Assessment Allowance: A Norwegian Longitudinal Multilevel Register Study. (external link)
• Marit Knapstad; Lauren Lissner; Cecilia Björkelund et al. (2025). Mental stress due to poor organizational climate and high work commitment as predictor of 10-year registered sickness absence: a cohort study based on The Population Study of Women in Gothenburg. (external link)
• Leif Edvard Aarø; Otto Robert Smith; Mogens Trab Damsgaard et al. (2025). Four scales measuring mental wellbeing in the Nordic countries: do they tell the same story?. (external link)
• Leif Edvard Aarø; Marit Knapstad; Otto Robert Frans Smith (2025). Positive mental wellbeing or symptoms of depression? Discriminant validity of the Warwick-Edinburgh Mental Wellbeing Scale. (external link)
• Børge Sivertsen; Jens Christoffer Skogen; Anne Reneflot et al. (2024). Assessing Diagnostic Precision: Adaptations of the Hopkins Symptom Checklist (HSCL-5/10/25) Among Tertiary-Level Students in Norway. (external link)
• Leif Edvard Aarø; Marit Knapstad; Thomas Sevenius Nilsen et al. (2024). The Norwegian Counties Public Health Survey (NCPHS): a design study. (external link)
• Elin Hanevik; Frida M. G. Røvik; Tormod Bøe et al. (2023). Client predictors of therapy dropout in a primary care setting: a prospective cohort study. (external link)
• Otto Robert Frans Smith; Leif Edvard Aarø; Marit Knapstad (2023). The Importance of Symptom Reduction for Functional Improvement after Cognitive Behavioral Therapy for Anxiety and Depression: A Causal Mediation Analysis. (external link)
• Leif Edvard Aarø; Tony Mathias Leino; Øystein Vedaa et al. (2023). Behavioural precautions to avoid transmission of the COVID-19 virus – low educated groups are not always lagging behind. (external link)
• Leif Edvard Aarø; Eyvind Ohm; Jens Christoffer Skogen et al. (2023). A cross-sectional study of the relationship between injuries and quality of life, psychological distress, sleeping problems, and global subjective health in adults from three Norwegian counties. (external link)
• Børge Sivertsen; Marit Knapstad; Keith Petrie et al. (2022). Changes in mental health problems and suicidal behaviour in students and their associations with COVID-19-related restrictions in Norway: A national repeated cross-sectional analysis. (external link)
• Solbjørg Makalani Myrtveit Sæther; Marit Knapstad; Nick Grey et al. (2022). Moderators of treatment effect of Prompt Mental Health Care compared to treatment as usual: Results from a randomized controlled trial. (external link)
• Otto Robert Frans Smith; Solbjørg Makalani Myrtveit Sæther; Ellen Merethe Melingen Haug et al. (2022). Long-term outcomes at 24- and 36-month follow-up in the intervention arm of the randomized controlled trial of Prompt Mental Health Care. (external link)
• Thomas Hansen; Thomas Sevenius Nilsen; Marit Knapstad et al. (2021). Covid-fatigued? A longitudinal study of Norwegian older adults’ psychosocial well-being before and during early and later stages of the COVID-19 pandemic. (external link)
• Linn Vathne Lervik; Marit Knapstad; Asle Hoffart et al. (2021). Psychometric Properties of the Norwegian Version of the Cognitive Therapy Adherence and Competence Scale (CTACS) and Its Associations With Outcomes Following Treatment in IAPT Norway. (external link)
• Marit Knapstad; Robert Frans Otto Smith (2021). Social anxiety and agoraphobia symptoms effectively treated by Prompt Mental Health Care versus TAU at 6‐ and 12‐month follow‐up: Secondary analysis from a randomized controlled trial. (external link)
• Thomas Hansen; Thomas Sevenius Nilsen; Baeksan Yu et al. (2021). Locked and lonely? A longitudinal assessment of loneliness before and during the COVID-19 pandemic in Norway. (external link)
• Linn Vathne Lervik; Asle Hoffart; Marit Knapstad et al. (2021). Exploring the temporal associations between avoidance behavior and cognitions during the course of cognitive behavioral therapy for clients with symptoms of social anxiety disorder. (external link)
• Linn Lervik; Marit Knapstad; Robert Frans Otto Smith (2020). Process evaluation of Prompt Mental Health Care (PMHC): the Norwegian version of Improving Access to Psychological Therapies. (external link)
• Solbjørg Makalani Myrtveit Sæther; Marit Knapstad; Nick Grey et al. (2020). Long-term outcomes of Prompt Mental Health Care: A randomized controlled trial. (external link)
• Marit Knapstad; Solbjørg Makalani Myrtveit Sæther; Gunnel Hensing et al. (2020). Prompt Mental Health Care (PMHC): work participation and functional status at 12 months post-treatment. (external link)
• Solbjørg Makalani Myrtveit; Kristin Gärtner Askeland; Ann Kristin Knudsen et al. (2019). Risky drinking among Norwegian students: Associations with participation in the introductory week, academic performance and alcohol-related attitudes. (external link)
• Solbjørg Makalani Myrtveit Sæther; Marit Knapstad; Nick Grey et al. (2019). Twelve months post-treatment results from the Norwegian version of improving access to psychological therapies. (external link)
• Børge Sivertsen; Morten Birkeland Nielsen; Ida E.H. Madsen et al. (2019). Sexual harassment and assault among university students in Norway. A cross-sectional prevalence study. (external link)
• Jens Christoffer Skogen; Marit Knapstad; Otto Robert Frans Smith et al. (2019). Hvordan bør rekrutteringen til folkehelseundersøkelsene gjennomføres?. (external link)
• Eirunn Thun; Børge Sivertsen; Marit Knapstad et al. (2019). Unravelling the prospective associations between mixed anxiety-depression and insomnia during the course of cognitive behavioral therapy. (external link)
• Solbjørg Makalani Myrtveit Sæther; Marit Knapstad; Kristin Gärtner Askeland et al. (2019). Alcohol consumption, life satisfaction and mental health among Norwegian college and university students. (external link)
• Børge Sivertsen; Mari Hysing; Marit Knapstad et al. (2019). Suicide attempts and non-suicidal self-harm among university students: Prevalence study. (external link)
• Marit Knapstad; Børge Sivertsen; Ann Kristin Knudsen et al. (2019). Trends in self-reported psychological distress among college and university students from 2010 to 2018. (external link)
• Marit Knapstad; Linn Vathne Lervik; Solbjørg Makalani Myrtveit Sæther et al. (2019). Effectiveness of prompt mental health care, the Norwegian version of improving access to psychological therapies: A randomized controlled trial. (external link)
• Marit Knapstad; Tine Nordgreen; Otto Robert Frans Smith (2018). Prompt mental health care, the Norwegian version of IAPT: clinical outcomes and predictors of change in a multicenter cohort study. (external link)
• Otto Robert Frans Smith; Daniele Evelin Alves; Marit Knapstad et al. (2017). Measuring mental well-being in Norway: validation of the Warwick-Edinburgh Mental Well-being Scale (WEMWBS). (external link)
• Solbjørg Makalani Myrtveit; Kristin Gärtner Askeland; Marit Knapstad et al. (2016). The Norwegian student introductory week: who takes part, and is participation associated with better social integration and satisfaction among students?. (external link)
• Marit Knapstad; Jesper Löve; Kristina Holmgren et al. (2016). Registry-based analysis of participator representativeness: a source of concern for sickness absence research?. (external link)
• Solbjørg Makalani Myrtveit; Kristin Gärtner Askeland; Ann Kristin Knudsen et al. (2016). Risky drinking among Norwegian students: associations with participation in the introductory week, academic performance and alcohol-related attitudes. (external link)
• Amie C. Hayley; Luke A. Downey; Con Stough et al. (2016). Social and emotional loneliness and self-reported difficulty initiating andmaintaining sleep (DIMS) in a sample of Norwegian university students. (external link)
• Marit Knapstad; Simon Nygaard Øverland; Max Henderson et al. (2014). Shame among long-term sickness absentees: correlates and impact on subsequent sickness absence. (external link)
• Jens Christoffer Skogen; Robert Stewart; Marit Knapstad et al. (2014). Early life factors in relation to cardiovacular disease in old age in Bergen: a Norwegian retrospective cohort study based on the Hordaland Study (HUSK). (external link)
• Marit Knapstad; Kristina Holmgren; Gunnel Hensing et al. (2014). Previous sickness absence and current low perceived social support at work among employees in the general population: A historical cohort study. (external link)
• Jens Christoffer Skogen; Robert Stewart; Arnstein Mykletun et al. (2013). An investigation of factors identified at birth in relation to anxiety and depression in old age: The Hordaland Health Study (HUSK). (external link)
• Simon Nygaard Øverland; Marit Knapstad; Ingvard Wilhelmsen et al. (2011). Do gastrointestinal complaints increase the risk for subsequent medically certified long-term sickness absence? The HUSK study. (external link)
• Rolf Reber; Pascal Wurtz; Marit Knapstad et al. (2010). Polarity correspondence in comparative number magnitude judgments. (external link)

Academic literature review

• Tonje Catrin Hakvaag; Marit Knapstad; Jone Ravndal Bjørnestad et al. (2022). A scooping review of Scandinavian studies of sick-listed' and social insurance officers' experiences of their encounters'. (external link)

Conference abstract

• Leif Edvard Aarø; Thomas Sevenius Nilsen; Marit Knapstad et al. (2024). The Norwegian Counties Public Health Survey (NCPHS). (external link)
• Therese Kristine Dalsbø; Marit Knapstad (2015). Stress hos helsepersonell kan forebygges (Cochrane - kort oppsummert). (external link)

Conference lecture

• Tonje Catrin Hakvaag; Marit Knapstad; Jone Ravndal Bjørnestad et al. (2021). Interpersonal encounters in Return to Work. (external link)
• Rolf Reber; Pascal Wurtz; Marit Knapstad et al. (2009). A Polarity Correspondence Account of Comparative Number Magnitude Judgments. (external link)

Doctoral thesis (PhD)

• Marit Knapstad; Simon Nygaard Øverland (2015). Psychological factors in long-termsickness absence: the role of shame and social support: Epidemiological studies based on the Health Assets Project. (external link)

Lecture

• Tonje Catrin Hakvaag; Marit Knapstad; Jone Ravndal Bjørnestad et al. (2021). Factors perceived to impact return to work in Scandinavian sickness insurance: a scoping review of encounters between sick-listed and social insurance officers. (external link)
• Otto Robert Frans Smith; Daniele Evelin Alves; Marit Knapstad (2016). Status fra evalueringsarbeidet. (external link)

Letter to the editor

• Otto Robert Frans Smith; Marit Knapstad; Daniele Evelin Alves et al. (2017). Initial results of prompt mental health care, the Norwegian version of improving access to psychological therapies. (external link)

Non-fiction book chapter

• Øystein Vedaa; Jens Christoffer Skogen; Marit Knapstad et al. (2021). Psykisk helse og livskvalitet under pandemien. (external link)

Popular science article

• Sebastian Brun Bjørkheim; Bjørn Sætrevik; Marit Knapstad (2022). Hvilke grunner har folk til å ikke følge smitteverntiltakene?. (external link)

Report

• Gunnhild Johnsen Hjetland; Truc Trung Nguyen; Ingebjørg Louise Rockwell Djupedal et al. (2026). Folkehelseundersøkinga i Vestland 2026: Framgangsmåte og utvalde resultat. (external link)
• Øystein Vedaa; Erlend Sunde; Truc Trung Nguyen et al. (2026). Folkehelseundersøkelsen i Telemark 2025: fremgangsmåte og utvalgte resultater. (external link)
• Øystein Vedaa; Erlend Sunde; Truc Trung Nguyen et al. (2026). Folkehelseundersøkelsen i Vestfold 2025: fremgangsmåte og utvalgte resultater. (external link)
• Øystein Vedaa; Truc Trung Nguyen; Marit Knapstad et al. (2026). Folkehelseundersøkelsen i Troms 2025: fremgangsmåte og utvalgte resultater. (external link)
• Øystein Vedaa; Gunnhild Johnsen Hjetland; Truc Trung Nguyen et al. (2026). Den nasjonale folkehelseundersøkelsen 2025: fremgangsmåte og utvalgte resultater. (external link)

Research report

• Gunnhild Johnsen Hjetland; Truc Trung Nguyen; Marit Knapstad et al. (2026). Folkehelseundersøkelsen i Finnmark 2026: fremgangsmåte og utvalgte resultater. (external link)
• Gunnhild Johnsen Hjetland; Erlend Sunde; Truc Trung Nguyen et al. (2026). Folkehelseundersøkelsen i Buskerud 2025: fremgangsmåte og utvalgte resultater.. (external link)
• Gunnhild Johnsen Hjetland; Erlend Sunde; Truc Trung Nguyen et al. (2026). Folkehelseundersøkelsen i Akershus 2025: Fremgangsmåte og utvalgte resultater. (external link)
• Gunnhild Johnsen Hjetland; Erlend Sunde; Truc Trung Nguyen et al. (2026). Folkehelseundersøkelsen i Østfold 2025: Fremgangsmåte og utvalgte resultater. (external link)
• Marit Knapstad; Gunnhild Johnsen Hjetland; Turi Reiten Finserås et al. (2025). Evaluering av veiledet internettbehandling ved Rask psykisk helsehjelp: En randomisert kontrollert studie. (external link)
• Marit Knapstad; Ingebjørg Louise Rockwell Djupedal; Ragnhild Bang Nes et al. (2025). Livskvalitet, subjektiv helse, sosiale relasjoner og funksjonsnivå blant eldre i Bergen 2024: En digital og postal spørreskjemaundersøkelse. (external link)
• Øystein Vedaa; Marit Knapstad; Thomas Sevenius Nilsen et al. (2025). Folkehelseundersøkelsen i Oslo 2024: Fremgangsmåte og utvalgte resultater. (external link)
• Marit Knapstad; Thomas Sevenius Nilsen; Jens Christoffer Skogen et al. (2024). Folkehelseundersøkelsen i Agder 2023: fremgangsmåte og utvalgte resultater. (external link)
• Marit Knapstad; Ragnhild Bang Nes; Thomas Sevenius Nilsen et al. (2024). Folkehelseundersøkelsen i Rogaland 2023: Fremgangsmåte og utvalgte resultater. (external link)
• Tony Mathias Leino; Thomas Sevenius Nilsen; Marit Knapstad (2023). Koronaundersøkinga i Vestland 2021: Framgangsmåte og utvalde resultat. (external link)
• Marit Knapstad; Tony Mathias Leino (2023). Folkehelseundersøkinga i Vestland 2022: Utvalde resultat basert på tilleggsspørsmåla i undersøkinga. (external link)
• Tony Mathias Leino; Thomas Sevenius Nilsen; Leif Edvard Aarø et al. (2023). Folkehelseundersøkelsen i Innlandet 2023: Fremgangsmåte og utvalgte resultater. (external link)
• Marit Knapstad; Jens Christoffer Skogen; Tony Mathias Leino et al. (2022). Folkehelseundersøkelsen – Helse og trivsel i Vestfold og Telemark 2021: Fremgangsmåte og utvalgte resultater. (external link)
• Marit Knapstad; Jens Christoffer Skogen; Tony Mathias Leino et al. (2022). Folkehelseundersøkelsen i Viken 2021: Fremgangsmåte og utvalgte resultater. (external link)
• Tony Mathias Leino; Leif Edvard Aarø; Marit Knapstad et al. (2022). Opplevd tiltaksbyrde under koronapandemien: Resultater fra fire fylker desember 2021.. (external link)
• Marit Knapstad; Jens Christoffer Skogen; Gunnhild Johnsen Hjetland et al. (2022). Folkehelseundersøkinga i Vestland 2022: Framgangsmåte og utvalde resultat. (external link)
• Leif Edvard Aarø; Øystein Vedaa; Tone Bruun et al. (2021). Koronaatferd og landbakgrunn i fire fylker. Etterlevelse og holdninger til offisiellesmittevernråd, opplevd engstelse, psykiske plager og endringer i sosiale kontakter etter landbakgrunn. Resultater fra undersøkelser i fire fylker under koronapandemien. (external link)
• Marit Knapstad; Thomas Sevenius Nilsen; Leif Edvard Aarø et al. (2021). Folkehelseundersøkinga i Møre og Romsdal 2021: Framgangsmåte og utvalde resultat. (external link)
• Marianne A Riise Bergsaker; Bernt Bratsberg; Anita Odveig Daae et al. (2021). Folkehelserapportens temautgave 2021. Folkehelsen etter covid-19. Pandemiens konsekvenser for ulike grupper i befolkningen. (external link)
• Jens Christoffer Skogen; Thomas Sevenius Nilsen; Gunnhild Johnsen Hjetland et al. (2020). Folkehelseundersøkelsen i Rogaland 2020: Fremgangsmåte og utvalgte resultater. (external link)
• Marit Knapstad; Jens Christoffer Skogen; Thomas Sevenius Nilsen et al. (2019). Folkehelseundersøkinga i Sogn og Fjordane: Framgangsmåte og utvalde resultat. (external link)
• Marit Knapstad; Ove Heradstveit; Børge Sivertsen (2018). Studentenes helse- og trivselsundersøkelse 2018. (external link)
• Marit Knapstad; Ove Heradstveit; Børge Sivertsen (2018). Studentenes Helse- og Trivselsundersøkelse 2018 (SHoT)/ HELT ÆRLIG-undersøkelsen. (external link)
• Robin Ulriksen; Marit Knapstad (2016). Digital mobbing. Kunnskapsoppsummering over forskning på effekter av tiltak.. (external link)
• Otto Robert Frans Smith; Daniele Evelin Alves; Marit Knapstad (2016). Rask psykisk helsehjelp: Evaluering av de første 12 pilotene i Norge. (external link)
• Therese Kristine Dalsbø; Marit Knapstad (2015). Arbeidsplasstiltak får trolig flere sykemeldte tilbake på jobb (Cochrane - kort oppsummert). (external link)
• Therese Kristine Dalsbø; Marit Knapstad (2014). Arbeidsmiljøfaktorer kan påvirke ansattes psykiske helse (omtale av SBU-rapport). (external link)
• Therese Kristine Dalsbø; Kristin Thuve Dahm; Astrid Austvoll-Dahlgren et al. (2013). Arbeidslivsbaserte tiltak for psykisk helse hos ansatte. (external link)

See a complete overview of publications in NVA.