Tor K Larsen

Summary

Country: Norway

Publications

  1. ncbi request reprint Premorbid functioning versus duration of untreated psychosis in 1 year outcome in first-episode psychosis
    T K Larsen
    Psychiatric Hospital of Rogaland, Armauer Hansensv 20, Stavanger, Norway
    Schizophr Res 45:1-9. 2000
  2. ncbi request reprint Premorbid adjustment in first-episode non-affective psychosis: distinct patterns of pre-onset course
    Tor K Larsen
    Psychiatric Clinic, Armauer Hansensv 20, PO Box 8100, N 4068 Stavanger, Norway
    Br J Psychiatry 185:108-15. 2004
  3. pmc Early detection of first-episode psychosis: the effect on 1-year outcome
    Tor K Larsen
    Psychiatric Clinic, University of Stavanger, Armauer Hansensv 20, PB 8100, N 4068 Stavanger, Norway
    Schizophr Bull 32:758-64. 2006
  4. ncbi request reprint Substance abuse in first-episode non-affective psychosis
    Tor K Larsen
    Stavanger University Hospital, Division for Psychiatry, Norway
    Schizophr Res 88:55-62. 2006
  5. doi request reprint One-year effect of changing duration of untreated psychosis in a single catchment area
    Tor K Larsen
    Stavanger University Hospital, Psychiatric Clinic, Division for Psychiatry, and Department of Psychiatry, University of Bergen, Norway
    Br J Psychiatry Suppl 51:s128-32. 2007
  6. ncbi request reprint The concept of schizophrenia and phase-specific treatment: cognitive-behavioral treatment in pre-psychosis and in nonresponders
    Tor K Larsen
    Rogaland Psychiatric Hospital, Stavanger, Norway
    J Am Acad Psychoanal Dyn Psychiatry 31:209-28. 2003
  7. ncbi request reprint [Early determination of schizophrenia--is primary prophylaxis possible?]
    Tor K Larsen
    Rogaland psykiatriske sjukehus Armauer Hansens vei 20 4004 Stavanger
    Tidsskr Nor Laegeforen 122:2015-8. 2002
  8. ncbi request reprint Shortened duration of untreated first episode of psychosis: changes in patient characteristics at treatment
    T K Larsen
    Department of Psychiatry, Yale University, New Haven, Conn, USA
    Am J Psychiatry 158:1917-9. 2001
  9. doi request reprint Optimizing health-care systems to promote early detection of psychosis
    Tor K Larsen
    Stavanger University Hospital, Regional Centre for Clinical Research in Psychosis, Psychiatric Clinic, Stavanger and Institute of Psychiatry, University of Bergen, Bergen, Norway
    Early Interv Psychiatry 3:S13-6. 2009
  10. doi request reprint First-episode psychosis patients recruited into treatment via early detection teams versus ordinary pathways: course, outcome and health service use during first 2 years
    Jan O Johannessen
    Stavanger University Hospital, Stavanger, Stavanger, Norway
    Early Interv Psychiatry 1:40-8. 2007

Collaborators

Detail Information

Publications37

  1. ncbi request reprint Premorbid functioning versus duration of untreated psychosis in 1 year outcome in first-episode psychosis
    T K Larsen
    Psychiatric Hospital of Rogaland, Armauer Hansensv 20, Stavanger, Norway
    Schizophr Res 45:1-9. 2000
    ..This study examines 1year outcome in patients having first-episode non-affective psychosis, with emphasis on Duration of Untreated Psychosis (DUP) and premorbid functioning, in order to clarify how these factors interact...
  2. ncbi request reprint Premorbid adjustment in first-episode non-affective psychosis: distinct patterns of pre-onset course
    Tor K Larsen
    Psychiatric Clinic, Armauer Hansensv 20, PO Box 8100, N 4068 Stavanger, Norway
    Br J Psychiatry 185:108-15. 2004
    ..Knowledge about premorbid development in psychosis can shed light upon theories about aetiology and schizophrenic heterogeneity, and form a basis for early detection initiatives...
  3. pmc Early detection of first-episode psychosis: the effect on 1-year outcome
    Tor K Larsen
    Psychiatric Clinic, University of Stavanger, Armauer Hansensv 20, PB 8100, N 4068 Stavanger, Norway
    Schizophr Bull 32:758-64. 2006
    ..Early intervention is assumed to improve outcome in first-episode psychosis, but this has not been proven...
  4. ncbi request reprint Substance abuse in first-episode non-affective psychosis
    Tor K Larsen
    Stavanger University Hospital, Division for Psychiatry, Norway
    Schizophr Res 88:55-62. 2006
    ..The premorbid profiles of the substance abusers were clearly different from the non-abusers. Drug abusers, in particular, were more socially active both premorbidly and during the year preceding the start of treatment...
  5. doi request reprint One-year effect of changing duration of untreated psychosis in a single catchment area
    Tor K Larsen
    Stavanger University Hospital, Psychiatric Clinic, Division for Psychiatry, and Department of Psychiatry, University of Bergen, Norway
    Br J Psychiatry Suppl 51:s128-32. 2007
    ..There is highly replicated positive correlation between longer duration of untreated psychosis and poorer outcome...
  6. ncbi request reprint The concept of schizophrenia and phase-specific treatment: cognitive-behavioral treatment in pre-psychosis and in nonresponders
    Tor K Larsen
    Rogaland Psychiatric Hospital, Stavanger, Norway
    J Am Acad Psychoanal Dyn Psychiatry 31:209-28. 2003
    ..We conclude that psychological treatment that focuses on coping strategies might be of help both in possible pre-psychotic stages and in nonresponders...
  7. ncbi request reprint [Early determination of schizophrenia--is primary prophylaxis possible?]
    Tor K Larsen
    Rogaland psykiatriske sjukehus Armauer Hansens vei 20 4004 Stavanger
    Tidsskr Nor Laegeforen 122:2015-8. 2002
    ..Early intervention is a new and potentially promising strategy for the treatment of schizophrenia...
  8. ncbi request reprint Shortened duration of untreated first episode of psychosis: changes in patient characteristics at treatment
    T K Larsen
    Department of Psychiatry, Yale University, New Haven, Conn, USA
    Am J Psychiatry 158:1917-9. 2001
    ..This study examined whether duration of untreated psychosis can be shortened in patients with first episodes of DSM-IV schizophrenia spectrum disorders and whether shorted duration alters patient appearance at treatment...
  9. doi request reprint Optimizing health-care systems to promote early detection of psychosis
    Tor K Larsen
    Stavanger University Hospital, Regional Centre for Clinical Research in Psychosis, Psychiatric Clinic, Stavanger and Institute of Psychiatry, University of Bergen, Bergen, Norway
    Early Interv Psychiatry 3:S13-6. 2009
    ..To discuss how health-care systems can achieve early detection of patients with first-episode psychosis...
  10. doi request reprint First-episode psychosis patients recruited into treatment via early detection teams versus ordinary pathways: course, outcome and health service use during first 2 years
    Jan O Johannessen
    Stavanger University Hospital, Stavanger, Stavanger, Norway
    Early Interv Psychiatry 1:40-8. 2007
    ....
  11. pmc The key to reducing duration of untreated first psychosis: information campaigns
    Inge Joa
    Stavanger University Hospital, Regional Centre for Clinical Research in Psychosis, Psychiatric Clinic, Stavanger, Norway
    Schizophr Bull 34:466-72. 2008
    ..This study reports what happens to DUP and presenting schizophrenia in the same health care sector when the IC is stopped...
  12. doi request reprint Course and predictors of suicidality over the first two years of treatment in first-episode schizophrenia spectrum psychosis
    Ingrid Melle
    Clinic for Mental Health and Addiction, Department of Psychiatry, University of Oslo, Oslo University Hospital, Kirkeveien 166, Oslo, Norway
    Arch Suicide Res 14:158-70. 2010
    ..Severe suicidality (plans and attempts) was predicted by drug abuse, dissatisfaction with life and severe suicidality at start of treatment...
  13. doi request reprint Effects on referral patterns of reducing intensive informational campaigns about first-episode psychosis
    Inge Joa
    Department of Psychiatry, Stavanger University Hospital, Regional Centre for Clinical Research in Psychosis, Stavanger, Norway
    Early Interv Psychiatry 1:340-5. 2007
    ....
  14. doi request reprint A comparison of adolescent- and adult-onset first-episode, non-affective psychosis: 2-year follow-up
    Johannes Langeveld
    Department of Psychiatry, Regional Centre for Clinical Research in Psychosis, Stavanger University Hospital, Norway
    Eur Arch Psychiatry Clin Neurosci 262:599-605. 2012
    ..Our results indicate that adolescent-onset and adult-onset psychosis have similar prognostic trajectories, although both may predict a qualitatively different course from childhood-onset psychosis...
  15. doi request reprint Early detection, early symptom progression and symptomatic remission after ten years in a first episode of psychosis study
    Wenche Ten Velden Hegelstad
    Regional Centre for Clinical Research in Psychosis, Division of Psychiatry, Stavanger University Hospital, Norway, PO Box 8100, 4068 Stavanger, Norway
    Schizophr Res 143:337-43. 2013
    ..Poor symptom outcome remains a challenge in psychosis: At least 50% of first-episode patients continue to have positive and/or negative symptoms after ten years...
  16. doi request reprint First-episode psychosis patients recruited into treatment via early detection teams versus ordinary pathways: course and health service use during 5 years
    Jan Olav Johannessen
    Regional Centre for Clinical Research in Psychosis, Stavanger University Hospital, Faculties of Science and Mathematics, University of Stavanger, Stavanger, Norway
    Early Interv Psychiatry 5:70-5. 2011
    ..To compare the 5-year course and outcome of first-episode psychosis (FEP) patients recruited via active outreach detection teams (DTs) versus ordinary referral channels (not-DT)...
  17. ncbi request reprint Neurocognitive dysfunction in first-episode psychosis: correlates with symptoms, premorbid adjustment, and duration of untreated psychosis
    Bjørn Rishovd Rund
    Department of Psychiatry, Ulleval University Hospital, Oslo, Norway
    Am J Psychiatry 161:466-72. 2004
    ....
  18. doi request reprint Long-term follow-up of the TIPS early detection in psychosis study: effects on 10-year outcome
    Wenche Ten Velden Hegelstad
    Division of Psychiatry, Stavanger University Hospital, Regional Center for Clinical Research in Psychosis, Health West, Norway
    Am J Psychiatry 169:374-80. 2012
    ..The authors investigated the differences in symptoms and recovery after 10 years between regional health care sectors with and without a comprehensive program for the early detection of psychosis...
  19. doi request reprint Baseline profiles of adolescent vs. adult-onset first-episode psychosis in an early detection program
    I Joa
    Psychiatric Division, Regional Centre for Clinical Research in Psychosis, Stavanger University Hospital, Stavanger, Norway
    Acta Psychiatr Scand 119:494-500. 2009
    ..Psychotic disorders often start in adolescence. We aim to investigate premorbid and baseline differences characterizing patients with an onset of psychosis in adolescence versus adulthood...
  20. doi request reprint The relationship of verbal learning and verbal fluency with written story production: implications for social functioning in first episode psychosis
    Helen J Stain
    Centre for Rural and Remote Mental Health, University of Newcastle, Orange, New South Wales, Australia
    Schizophr Res 138:212-7. 2012
    ..Some of these impairments may already be present pre-morbidly. This study aimed to investigate verbal functions in relation to written story production and social functioning in people experiencing a first episode of psychosis (FEP)...
  21. ncbi request reprint Early detection and intervention in first-episode schizophrenia: a critical review
    T K Larsen
    University of Oslo, Norway, Roskilde County Psychiatric Hospital Fjorden, Denmark, Rogaland Psychiatric Hospital, Norway, , Oslo, Norway
    Acta Psychiatr Scand 103:323-34. 2001
    ..At the time being reduction of DUP seems to be the most promising strategy. Intervention in the prodromal phase is more ethically and conceptually problematic...
  22. ncbi request reprint Early detection strategies for untreated first-episode psychosis
    J O Johannessen
    Rogaland Psychiatric Hospital, P O Box 1163, Hillevag, 4095, Stavanger, Norway
    Schizophr Res 51:39-46. 2001
    ..DUP was reduced by 1.5 years (mean) from before the time the ED system was instituted (to 0.5 years). The ED strategies appear to be effective and to influence directly the community's help-seeking behaviour...
  23. doi request reprint A 2-year follow-up of involuntary admission's influence upon adherence and outcome in first-episode psychosis
    S Opjordsmoen
    Department of Psychiatry, Oslo University Hospital, Ullevål and Institute of Psychiatry, University of Oslo, Norway
    Acta Psychiatr Scand 121:371-6. 2010
    ..To see, if voluntary admission for treatment in first-episode psychosis results in better adherence to treatment and more favourable outcome than involuntary admission...
  24. ncbi request reprint Does duration of untreated psychosis bias study samples of first-episode psychosis?
    S Friis
    Department of Psychiatry, Ulleval University Hospital, Oslo, Norway
    Acta Psychiatr Scand 110:286-91. 2004
    ..Our questions were: (i) What is the percentage of refusers? (ii) Are there systematic differences between refusers and consenters on DUP and/or other admission variables? (iii) What is the risk of refusal for different values of DUP?..
  25. ncbi request reprint Reducing the duration of untreated first-episode psychosis -- effects on baseline social functioning and quality of life
    I Melle
    Department of Psychiatry, Yale University, New Haven, CT, USA
    Acta Psychiatr Scand 112:469-73. 2005
    ..The TIPS study demonstrated that DUP can be reduced through early detection (ED). As quality of life (QoL) is associated with DUP it is expected that reduction of DUP leads to better QoL...
  26. ncbi request reprint [Does individual psychotherapy have a place in the treatment of schizophrenia?]
    Svein Friis
    Avdeling for forskning og undervisning Psykiatrisk divisjon Ullevål universitetssykehus 0407 Oslo
    Tidsskr Nor Laegeforen 122:2210-2. 2002
    ..Psychotherapy cannot replace treatment with neuroleptics, but neuroleptics alone will remain insufficient. These patients need integrated, comprehensive treatment programmes...
  27. ncbi request reprint Pathways to care for first-episode psychosis in an early detection healthcare sector: part of the Scandinavian TIPS study
    Jan Olav Johannessen
    Division of Psychiatry, General Hospital of Rogaland, Armauer Hanssens vei 20, 4000 Stavanger, Norway
    Br J Psychiatry Suppl 48:s24-8. 2005
    ..Early detection programmes aim to reduce the duration of untreated psychosis (DUP) by public education and by prompt access to treatment via active outreach detection teams...
  28. doi request reprint Prevention of negative symptom psychopathologies in first-episode schizophrenia: two-year effects of reducing the duration of untreated psychosis
    Ingrid Melle
    Section for Psychosis Research, Division of Psychiatry, Ulleval University Hospital, 0407 Oslo, Norway
    Arch Gen Psychiatry 65:634-40. 2008
    ..The duration of untreated psychosis (DUP)-the time from onset of psychotic symptoms to the start of adequate treatment--is consistently correlated with better course and outcome, but the mechanisms are poorly understood...
  29. ncbi request reprint Psychosis: conceptual and ethical aspects of early diagnosis and intervention
    Markus Heinimaa
    Department of Psychiatry, University of Turku, Turku, Finland
    Curr Opin Psychiatry 15:533-41. 2002
    ..Summary: At present there is a lack of consensus regarding which concepts to use in describing prepsychosis in prospective studies, and new concepts are needed for prospective description of emergent psychosis...
  30. ncbi request reprint [Can we understand psychoses?]
    Tor K Larsen
    Tidsskr Nor Laegeforen 124:1371. 2004
  31. ncbi request reprint The course of neurocognitive functioning in first-episode psychosis and its relation to premorbid adjustment, duration of untreated psychosis, and relapse
    Bjørn Rishovd Rund
    Department of Psychology, University of Oslo, P O Box 1094 Blindern, N 0317 Oslo, Norway
    Schizophr Res 91:132-40. 2007
    ..More severe deficits in WM and VL are associated with more relapses during the first year. It is unclear whether NP deficits cause relapse, relapse causes NP deficits, or both are manifestations of a third deteriorative process...
  32. ncbi request reprint Multifamily group treatment in a program for patients with first-episode psychosis: experiences from the TIPS project
    Anne Fjell
    Ulleval University Hospital, N 0407 Oslo, Norway
    Psychiatr Serv 58:171-3. 2007
    ..Treatment was well received by patients and families. Care should be taken to prevent a long delay before group commencement at this stressful period in the lives of patients and families...
  33. ncbi request reprint Reducing the duration of untreated first-episode psychosis: effects on clinical presentation
    Ingrid Melle
    Division of Psychiatry, Ullevaal University Hospital, Oslo, Norway
    Arch Gen Psychiatry 61:143-50. 2004
    ..Most studies on first-episode psychosis show an association between a long duration of untreated psychosis (DUP) and poorer short-term outcome, but the mechanisms of this relationship are poorly understood...
  34. ncbi request reprint Early detection of the first episode of schizophrenia and suicidal behavior
    Ingrid Melle
    Department of Research and Education, Division of Psychiatry, Ulleval University Hospital, N 0407 Oslo, Norway
    Am J Psychiatry 163:800-4. 2006
    ..Treatment programs that bring first-episode patients into treatment at lower symptom levels can have the potential to reduce risk for suicide attempts...
  35. ncbi request reprint FRONTLINE--the schizophrenic person and the benefits of the psychotherapies--seeking a PORT in the storm
    Ann Louise S Silver
    J Am Acad Psychoanal Dyn Psychiatry 31:1-10. 2003
  36. ncbi request reprint [Therapy of psychoses]
    Svein Friis
    Ulleval universitetssykehus
    Tidsskr Nor Laegeforen 123:1393. 2003
  37. ncbi request reprint Effect of an early detection programme on duration of untreated psychosis: part of the Scandinavian TIPS study
    Svein Friis
    Department of Research and Education, Division of Psychiatry, Ulleval University Hospital, Oslo N 0407, Norway
    Br J Psychiatry Suppl 48:s29-32. 2005
    ..It is unclear whether an early detection programme increases or decreases the number of patients with a long duration of untreated psychosis (DUP), and whether these differ from other patients with a long DUP...