Blar i Department of Clinical Medicine på forfatter "Johannessen, Jan Olav"

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    • Childhood trauma, antipsychotic medication, and symptom remission in first-episode psychosis 

      Ottesen, Akiah; Hegelstad, Wenche; Joa, Inge; Ilner, Stein E. Opjordsmoen; Rund, Bjørn Rishovd; Røssberg, Jan Ivar; Simonsen, Erik; Johannessen, Jan Olav; Larsen, Tor Ketil; Haahr, Ulrik H.; McGlashan, T.H.; Friis, Svein; Melle, Ingrid (Journal article; Peer reviewed, 2021)
      Background: To what extent psychotic symptoms in first-episode psychosis (FEP) with a history of childhood interpersonal trauma (CIT) are less responsive to antipsychotic medication is not known. In this longitudinal study, ...

    • Early substance use cessation improves cognition-10 years outcome in first-episode psychosis patients 

      Weibell, Melissa Anne E; Johannessen, Jan Olav; Auestad, Bjørn Henrik; Bramness, Jørgen Gustav; Brønnick, Kolbjørn Kallesten; Haahr, Ulrik; Joa, Inge; Larsen, Tor Ketil; Melle, Ingrid; Ilner, Stein E. Opjordsmoen; Rund, Bjørn Rishovd; Røssberg, Jan Ivar; Simonsen, Erik; Vaglum, Per; Stain, Helen J.; Friis, Svein; Hegelstad, Wenche (Peer reviewed; Journal article, 2019-07-12)
      Background: Cognitive impairment may be a risk factor for, as well as a consequence of, psychosis. Non-remitting symptoms, premorbid functioning, level of education, and socioeconomic background are known correlates. A ...

    • "Everyone Needs a Friend Sometimes" - social predictors of long-term remission in first episode psychosis 

      Bjørnestad, Jone Ravndal; Joa, Inge; Larsen, Tor Ketil; Langeveld, Johannes H.; Davidson, Larry; Hegelstad, Wenche; Anda-Ågotnes, Liss Gøril; Veseth, Marius; Melle, Ingrid; Johannessen, Jan Olav; Brønnick, Kolbjørn Selvåg (Peer reviewed; Journal article, 2016-10-04)
      Background: Predictors of long-term symptomatic remission are crucial to the successful tailoring of treatment in first episode psychosis. There is lack of studies distinguishing the predictive effects of different social ...

    • One-year outcome and adherence to pharmacological guidelines in first-episode schizophrenia: Results from a consecutive cohort study 

      Drosos, Petros; Brønnick, Kolbjørn Kallesten; Joa, Inge; Johannessen, Jan Olav; Johnsen, Erik; Kroken, Rune Andreas; Stain, Helen J.; Hegelstad, Wenche; Larsen, Tor Ketil (Journal article; Peer reviewed, 2020)
      Background Remission in schizophrenia is difficult to achieve. Antipsychotic drugs are critical in the treatment of schizophrenia. International guidelines for the pharmacological treatment of schizophrenia recommend a ...

    • Psychiatric patients’ attitudes towards being hospitalized: a national multicentre study in Norway 

      Hustoft, Kjetil; Larsen, Tor Ketil; Brønnick, Kolbjørn Kallesten; Joa, Inge; Johannessen, Jan Olav; Ruud, Torleif (Journal article; Peer reviewed, 2022-11-21)
      Background: The aim of the study was to explore patients’ attitudes towards voluntary and involuntary hospitalization in Norway, and predictors for involuntary patients who wanted admission. Methods: A multi-centre study ...