Blar i forfatter "Widding-Havneraas, Tarjei"

Viser treff 1-4 av 4

    • Causal modelling of variation in clinical practice and long-term outcomes of ADHD using Norwegian registry data: The ADHD controversy project 

      Mykletun, Arnstein; Widding-Havneraas, Tarjei; Chaulagain, Ashmita; Lyhmann, Ingvild; Bjelland, Ingvar; Halmøy, Anne; Elwert, Felix; Butterworth, Peter; Markussen, Simen; Zachrisson, Henrik Daae; Rypdal, Knut (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-01-19)
      <p><i>Introduction:</i> Attention-deficit/hyperactivity disorder (ADHD) is among the most common mental disorders in children and adolescents, and it is a strong risk factor for several adverse psychosocial outcomes over the lifespan. There are large between-country and within-country variations in diagnosis and medication rates. Due to ethical and practical considerations, a few studies have examined ...

    • Geographical variation in ADHD: do diagnoses refect symptom levels? 

      Widding-Havneraas, Tarjei; Markussen, Simen; Elwert, Felix; Lyhmann, Ingvild; Bjelland, Ingvar; Halmøy, Anne; Chaulagain, Ashmita; Ystrøm, Eivind; Mykletun, Arnstein; Zachrisson, Henrik Daae (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-05-18)
      Rates of ADHD diagnosis vary across regions in many countries. However, no prior study has investigated how much within-country geographic variation in ADHD diagnoses is explained by variation in ADHD symptom levels. We examine whether ADHD symptom levels explain variation in ADHD diagnoses among children and adolescents using nationwide survey and register data in Norway. Geographical variation in ...

    • A meta-regression of the impact of policy on the efficacy of individual placement and support 

      Brinchmann, Beate; Widding-Havneraas, Tarjei; Modini, Matthew; Rinaldi, Miles; Moe, Cathrine Fredriksen; McDaid, David; Park, A-la; Killackey, Eoin; Harvey, Samuel B; Mykletun, Arnstein (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-11-16)
      <i>Objective</i> - Individual placement and support (IPS) has shown consistently better outcomes on competitive employment for patients with severe mental illness than traditional vocational rehabilitation. The evidence for efficacy originates from few countries, and generalization to different countries has been questioned. This has delayed implementation of IPS and led to requests for country‐specific ...

    • Preference-based instrumental variables in health research rely on important and underreported assumptions: a systematic review 

      Widding-Havneraas, Tarjei; Chaulagain, Ashmita; Lyhmann, Ingvild; Zachrisson, Henrik Daae; Elwert, Felix; Markussen, Simen; McDaid, David; Mykletun, Arnstein (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-06-11)
      <i>Objective</i> - Preference-based instrumental variables (PP IV) designs can identify causal effects when patients receive treatment due to variation in providers’ treatment preference. We offer a systematic review and methodological assessment of PP IV applications in health research.<br><br> <i>Study Design and Setting</i> - We included studies that applied PP IV for evaluation of any treatment ...