Browsing UiS Brage by Author "Johannessen, Jan Olav"

Now showing items 1-20 of 25

    • Associations between symptom and neurocognitive dimensions in clinical high risk for psychosis 

      Aase, Ingvild; Langeveld, Johannes Hendrik; Joa, Inge; Johannessen, Jan Olav; Dalen, Ingvild; Hegelstad, Wenche (Peer reviewed; Journal article, 2022)
      Introduction Clinical high risk for psychosis (CHR) is associated with mild cognitive impairments. Symptoms are clustered into positive, negative and disorganization symptoms. The association between specific symptom ...

    • Brukermedvirkning og samvalg i døgnbehandling av ungdom med psykisk lidelse 

      Bjønness, Stig (PhD thesis UiS;, Doctoral thesis, 2022-04)
      Bakgrunn: Psykiske helseplager er beskrevet som en av de største utfordringene for folkehelsa og framtiden, og rammer i særskilt grad ungdom. Lovgivning og forskningslitteratur understreker behovet for at behandling ...

    • Childhood interpersonal trauma and premorbid social adjustment as predictors of symptom remission in first episode psychosis 

      Hegelstad, Wenche ten Velden; Ottesen, Akiah; Bjørnestad, Jone Ravndal; Gismervik, Kristine; Melle, Ingrid; Stain, Helen J.; Joa, Inge; Johannessen, Jan Olav (Peer reviewed; Journal article, 2021-05)
      Background Childhood interpersonal trauma (CIT) and premorbid adjustment are both associated with poor outcome in psychosis. In this study we investigate the relative impact of CIT and premorbid adjustment on symptom ...

    • 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 (Peer reviewed; Journal article, 2021-11)
      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, ...

    • Cognitive predictors of longitudinal positive symptom course in clinical high risk for psychosis 

      Aase, Ingvild; Langeveld, Johannes Hendrik; Johannessen, Jan Olav; Joa, Inge; Dalen, Ingvild; Hegelstad, Wenche (Peer reviewed; Journal article, 2021)
      Background Clinical High Risk (CHS) for psychosis is a state in which positive symptoms are predominant but do not reach a level of severity that fulfils the criteria for a psychotic episode. The aim of this study has ...

    • Early detection of ultra high risk for psychosis in a Norwegian catchment area: The two year follow-up of the Prevention of Psychosis study 

      Joa, Inge; Bjørnestad, Jone Ravndal; Johannessen, Jan Olav; Langeveld, Johannes Hendrik; Stain, Helen J.; Weibell, Melissa Anne Elin Authen; Hegelstad, Wenche (Peer reviewed; Journal article, 2021-02)
      Objectives: Most individuals experience a relatively long period of sub-clinical psychotic like symptoms, known as the ultra high risk (UHR) or at risk mental states (ARMS), prior to a first episode of psychosis. Approximately ...

    • 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 (Journal article; Peer reviewed, 2019-07)
      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 ...

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

      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 (Journal article; Peer reviewed, 2019-07)
      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 ...

    • The Effect of Intensive Implementation Support on Fidelity for Four Evidence‑Based Psychosis Treatments: A Cluster Randomized Trial 

      Ruud, Torleif; Drake, Robert E.; Saltyte Benth, Jurate; Drivenes, Karin; Hartveit, Miriam; Heiervang, Kristin Sverdvik; Høifødt, Tordis Sørensen; Haaland, Vegard Øksendal; Joa, Inge; Johannessen, Jan Olav; Johansen, Karl Johan; Stensrud, Bjørn; Haugom, Espen Woldsengen; Clausen, Hanne Kristin; Biringer, Eva Aaker; Bond, Gary R. (Peer reviewed; Journal article, 2021)
      Abstract Purpose: Service providers need effective strategies to implement evidence-based practices (EBPs) with high fidelity. This study aimed to evaluate an intensive implementation support strategy to increase fidelity ...

    • "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 (Journal article; Peer reviewed, 2016-10)
      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 ...

    • An exploratory study of the experiences of being both a mental health professional and carer in mental health services in Norway 

      Stain, Helen J.; Johannessen, Jan Olav; Joa, Inge (Peer reviewed; Journal article, 2020-01)
      4.1 Introduction Around 60% of carers of relatives with mental health problems report feeling unrecognized by professional health care, and many report a lack of engagement, shared decision‐making and information sharing. ...

    • Exploring specific predictors of psychosis onset over a 2‐year period: A decision‐tree model 

      Bjørnestad, Jone Ravndal; Tjora, Tore; Langeveld, Johannes Hendrik; Stain, Helen J.; Joa, Inge; Johannessen, Jan Olav; Friedman‐Yakoobian, Michelle; Hegelstad, Wenche ten Velden (Peer reviewed; Journal article, 2021-05)
      Aim The fluctuating symptoms of clinical high risk for psychosis hamper conversion prediction models. Exploring specific symptoms using machine-learning has proven fruitful in accommodating this challenge. The aim of this ...

    • The Family Psychoeducation Fidelity Scale: Psychometric Properties 

      Joa, Inge; Johannessen, Jan Olav; Heiervang, Kristin S.; Sviland, A. A.; Nordin, Håkan; Landers, Matthew; Ruud, Torleif; Drake, Robert E.; Bond, Gary R. (Peer reviewed; Journal article, 2020)
      This study examined psychometric properties and feasibility of the Family Psychoeducation (FPE) Fidelity Scale. Fidelity assessors conducted reviews using the FPE fidelity scale four times over 18 months at five sites in ...

    • Implementing Clinical Guidelines for the Treatment of Psychosis: The Frontline Leaders’ Point of View. A Qualitative Study 

      Nordin, Håkan; Mathisen, Gro Ellen; Rørtveit, Kristine; Johannessen, Jan Olav; Ruud, Torleif; Hartveit, Miriam; Joa, Inge (Peer reviewed; Journal article, 2024-02)
      Background: Despite the large amount of leadership and implementation theories and recommendations, healthcare services continue to struggle with efficiently incorporating new knowledge. The questioning of conventional ...

    • 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 (Peer reviewed; Journal article, 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 ...

    • Parents' perspectives on user participation and shared decision‐making in adolescents' inpatient mental healthcare 

      Bjønness, Stig Erlend; Grønnestad, Trond Erik; Johannessen, Jan Olav; Storm, Marianne (Peer reviewed; Journal article, 2022)
      Background Parents are a resource that can be of considerable importance in supporting their adolescents' recovery and shared decision-making processes. However, involving both adolescents and their parents in treatment ...

    • Primary prevention of psychosis through interventions in the symptomatic prodromal phase, a pragmatic Norwegian Ultra High Risk study 

      Joa, Inge; Gisselgård, Jens; Brønnick, Kolbjørn; McGlashan, Thomas; Johannessen, Jan Olav (Journal article; Peer reviewed, 2015-04)
      Background: Evidence has been accumulating that it may be possible to achieve prevention in psychotic disorders. The aim of the Prevention Of Psychosis (POP) study is to reduce the annual incidence of psychotic disorders ...

    • 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 (Peer reviewed; Journal article, 2022)
      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 ...

    • Psychotherapy in psychosis: Experiences of fully recovered service users 

      Bjørnestad, Jone Ravndal; Veseth, Marius; Davidson, Larry; Joa, Inge; Johannessen, Jan Olav; Larsen, Tor Ketil; Melle, Ingrid; Hegelstad, Wenche (Journal article; Peer reviewed, 2018-09)
      Background: Despite the evidence of the importance of including service users’ views on psychotherapy after psychosis, there is a paucity of research investigating impact on full recovery. Objectives: To explore what ...

    • Reduced Expression of Emotion: A Red Flag Signalling Conversion to Psychosis in Clinical High Risk for Psychosis (CHR-P) Populations 

      Bjørnestad, Jone Ravndal; Tjora, Tore; Langeveld, Johannes Hendrik; Joa, Inge; Johannessen, Jan Olav; Friedman‐Yakoobian, Michelle; Hegelstad, Wenche (Peer reviewed; Journal article, 2022-02)
      Objective: In this hypothesis-testing study, which is based on findings from a previous atheoretical machine-learning study, we test the predictive power of baseline “reduced expression of emotion” for psychosis. Method: ...