2023

• Johnsen, Kristin Heidi; Kvitland, Levi Røstad; Sollie, Henrik; Reiestad, Magnus Tallaksen; Jonsbu, Egil; Hagen, Kristen. (2023) Is the Conners’ continuous performance test helpful for assessing attention deficit hyperactivity disorder in a clinical setting?. Nordic Journal of Psychiatry
  Academic article
• Mundal, Ingunn Pernille; Schei, Jorun; Lydersen, Stian; Thomsen, Per Hove; Nøvik, Torunn Stene; Kvitland, Levi Røstad. (2023) Prevalence of chronic and multisite pain in adolescents and young adults with ADHD: a comparative study between clinical and general population samples (the HUNT study). European Child and Adolescent Psychiatry
  Academic article

2017

• Demmo, Christine; Lagerberg, Trine Vik; Aminoff, Sofie Ragnhild; Hellvin, Tone; Kvitland, Levi Røstad; Simonsen, Carmen Elisabeth. (2017) Course of neurocognitive function in first treatment bipolar I disorder: One-year follow-up study. Psychiatry Research
  Academic article
• Demmo, Christine; Lagerberg, Trine Vik; Kvitland, Levi Røstad; Aminoff, Sofie Ragnhild; Hellvin, Tone; Simonsen, Carmen Elisabeth. (2017) Neurocognitive functioning, clinical course and functional outcome in first-treatment bipolar I disorder patients with and without clinical relapse: A 1-year follow-up study. Bipolar Disorders
  Academic article

2016

• Kvitland, Levi Røstad; Ringen, Petter Andreas; Aminoff, Sofie Ragnhild; Demmo, Christine; Hellvin, Tone; Lagerberg, Trine Vik. (2016) Duration of untreated illness in first-treatment bipolar I disorder in relation to clinical outcome and cannabis use. Psychiatry Research
  Academic article
• Demmo, Christine; Lagerberg, Trine Vik; Aminoff, Sofie Ragnhild; Hellvin, Tone; Kvitland, Levi Røstad; Simonsen, Carmen Elisabeth. (2016) History of psychosis and previous episodes as potential explanatory factors for neurocognitive impairment in first-treatment bipolar I disorder. Bipolar Disorders
  Academic article
• Kvitland, Levi Røstad; Melle, Ingrid; Aminoff, Sofie Ragnhild; Lagerberg, Trine Vik; Andreassen, Ole Andreas; Ringen, Petter Andreas. (2016) Cannabis use in first-treatment bipolar I disorder: Relations to clinical characteristics. Early Intervention in Psychiatry
  Academic article
• Nerhus, Mari; Berg, Akiah Ottesen; Kvitland, Levi Røstad; Dieset, Ingrid; Hope, Sigrun; Dahl, Sandra Rinne. (2016) Low vitamin D is associated with negative and depressive symptoms in psychotic disorders. Schizophrenia Research
  Academic article

2015

• Kvitland, Levi Røstad; Melle, Ingrid; Aminoff, Sofie Ragnhild; Demmo, Christine; Lagerberg, Trine Vik; Andreassen, Ole Andreas. (2015) Continued cannabis use at one year follow up is associated with elevated mood and lower global functioning in bipolar I disorder. BMC Psychiatry
  Academic article

2014

• Lagerberg, Trine Vik; Kvitland, Levi Røstad; Aminoff, Sofie Ragnhild; Aas, Monica; Ringen, Petter Andreas; Andreassen, Ole Andreas. (2014) Indications of a dose-response relationship between cannabis use and age at onset in bipolar disorder. Psychiatry Research
  Academic article

2013

• Nerhus, Mari; Berg, Akiah Ottesen; Haram, Marit; Kvitland, Levi Røstad; Andreassen, Ole Andreas; Melle, Ingrid. (2013) Migrant background and ethnic minority status as predictors for duration of untreated psychosis. Early Intervention in Psychiatry
  Academic literature review
• Kvitland, Levi Røstad; Ringen, Petter Andreas; Aminoff, Sofie Ragnhild; Haram, Marit; Hellvin, Tone; Lagerberg, Trine Vik. (2013) Cannabis use in the early phase of bipolar disorder: clinical characteristics in a cross-sectional sample. Bipolar Disorders
  Abstract