Blar i Vitenskapelige publikasjoner (SV-IH til 2017) på forfatter "Johannessen, Jan Olav"
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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 ... -
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 ... -
"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 ... -
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 ...