Steinar Lorentzen
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Author network for Steinar Lorentzen by COREMINE medical


Publications 2016

Fjeldstad A, Hoglend P, Lorentzen S (2016)
Presence of Personality Disorder Moderates the Long-Term Effects of Short-Term and Long-Term Psychodynamic Group Therapy: A 7-Year Follow-Up of a Randomized Clinical Trial
Group Dyn.-Theory Res. Pract., 20 (4), 294-309

Publications 2015

Fjeldstad A, Høglend P, Lorentzen S (2015)
Patterns of Change in Interpersonal Problems During and After Short-term and Long-term Psychodynamic Group Therapy: A Randomized Clinical Trial
Psychother Res, 1-12 (in press)
PubMed 26514065

Lorentzen S, Fjeldstad A, Ruud T, Høglend PA (2015)
Comparing Short- and Long-Term Group Therapy: Seven-Year Follow-Up of a Randomized Clinical Trial
Psychother Psychosom, 84 (5), 320-1
PubMed 26279294

Lorentzen S, Fjeldstad A, Ruud T, Marble A, Klungsoyr O, Ulberg R, Hoglend PA (2015)
The Effectiveness of Short- and Long-Term Psychodynamic Group Psychotherapy on Self-Concept: Three Years Follow-Up of a Randomized Clinical Trial
Int. J. Group Psychother., 65 (3), 363-385

Lorentzen S, Fjeldstad A, Ruud T, Marble A, Klungsøyr O, Ulberg R, Høglend PA (2015)
The Effectiveness of Short- and Long-Term Psychodynamic Group Psychotherapy on Self-Concept: Three Years Follow-Up of a Randomized Clinical Trial
Int J Group Psychother, 65 (3), 362-85
PubMed 26076204

Lorentzen S, Wilberg T, Martinsen EW (2015)
Group Psychotherapy in Norway
Int J Group Psychother, 65 (4), 543-51
PubMed 26401797

Suszek H, Holas P, Wyrzykowski T, Lorentzen S, Kokoszka A (2015)
Short-term intensive psychodynamic group therapy versus cognitive-behavioral group therapy in day treatment of anxiety disorders and comorbid depressive or personality disorders: study protocol for a randomized controlled trial
Trials, 16, 319
PubMed 26220089

Publications 2014

Knutzen M, Bjorkly S, Eidhammer G, Lorentzen S, Mjosund NH, Opjordsmoen S, Sandvik L, Friis S (2014)
Characteristics of patients frequently subjected to pharmacological and mechanical restraint - A register study in three Norwegian acute psychiatric wards (vol 215, pg 127, 2014)
Psychiatry Res., 219 (3), 714

Lorentzen S, Ruud T, Fjeldstad A, Høglend PA (2014)
Personality disorder moderates outcome in short- and long-term group analytic psychotherapy: A randomized clinical trial
Br J Clin Psychol, 54 (2), 129-46
PubMed 25178520

Steen NE, Methlie P, Lorentzen S, Dieset I, Aas M, Nerhus M, Haram M, Agartz I, Melle I, Berg JP, Andreassen OA (2014)
Altered systemic cortisol metabolism in bipolar disorder and schizophrenia spectrum disorders
J Psychiatr Res, 52, 57-62
PubMed 24534618

Publications 2013

Bakali JV, Wilberg T, Klungsoyr O, Lorentzen S (2013)
Development of Group Climate in Short- and Long-Term Psychodynamic Group Psychotherapy
Int. J. Group Psychother., 63 (3), 367-393

Bakali JV, Wilberg T, Klungsøyr O, Lorentzen S (2013)
Development of group climate in short- and long-term psychodynamic group psychotherapy
Int J Group Psychother, 63 (3), 366-93
PubMed 23734920

Etain B, Aas M, Andreassen OA, Lorentzen S, Dieset I, Gard S, Kahn JP, Bellivier F, Leboyer M, Melle I, Henry C (2013)
Childhood trauma is associated with severe clinical characteristics of bipolar disorders
J Clin Psychiatry, 74 (10), 991-8
PubMed 24229750

Hope S, Ueland T, Steen NE, Dieset I, Lorentzen S, Berg AO, Agartz I, Aukrust P, Andreassen OA (2013)
Interleukin 1 receptor antagonist and soluble tumor necrosis factor receptor 1 are associated with general severity and psychotic symptoms in schizophrenia and bipolar disorder
Schizophr Res, 145 (1-3), 36-42
PubMed 23403415

Knutzen M, Bjørkly S, Eidhammer G, Lorentzen S, Mjøsund NH, Opjordsmoen S, Sandvik L, Friis S (2013)
Characteristics of patients frequently subjected to pharmacological and mechanical restraint--a register study in three Norwegian acute psychiatric wards
Psychiatry Res, 215 (1), 127-33
PubMed 24230996

Larsson S, Aas M, Klungsøyr O, Agartz I, Mork E, Steen NE, Barrett EA, Lagerberg TV, Røssberg JI, Melle I, Andreassen OA, Lorentzen S (2013)
Patterns of childhood adverse events are associated with clinical characteristics of bipolar disorder
BMC Psychiatry, 13, 97
PubMed 23522391

Lorentzen S (2013)
Comparison of short- and long-term dynamic group psychotherapy: randomised controlled trial (vol 203, pg 280, 2013)
Br. J. Psychiatry, 203 (5), 392

Lorentzen S, Ruud T (2013)
Group therapy in public mental health services: approaches, patients and group therapists
J Psychiatr Ment Health Nurs, 21 (3), 219-25
PubMed 23581992

Lorentzen S, Ruud T, Fjeldstad A, Høglend P (2013)
Comparison of short- and long-term dynamic group psychotherapy: randomised clinical trial
Br J Psychiatry, 203 (3), 280-7
PubMed 24029539

Mork E, Walby FA, Harkavy-Friedman JM, Barrett EA, Steen NE, Lorentzen S, Andreassen OA, Melle I, Mehlum L (2013)
Clinical characteristics in schizophrenia patients with or without suicide attempts and non-suicidal self-harm--a cross-sectional study
BMC Psychiatry, 13, 255
PubMed 24106884

Aas M, Haukvik UK, Djurovic S, Bergmann Ø, Athanasiu L, Tesli MS, Hellvin T, Steen NE, Agartz I, Lorentzen S, Sundet K, Andreassen OA, Melle I (2013)
BDNF val66met modulates the association between childhood trauma, cognitive and brain abnormalities in psychoses
Prog Neuropsychopharmacol Biol Psychiatry, 46, 181-8
PubMed 23876786

Publications 2012

Hersoug AG, Høglend P, Gabbard GO, Lorentzen S (2012)
The combined predictive effect of patient characteristics and alliance on long-term dynamic and interpersonal functioning after dynamic psychotherapy
Clin Psychol Psychother, 20 (4), 297-307
PubMed 22298434

Knutzen M, Bjørkly S, Eidhammer G, Lorentzen S, Helen Mjøsund N, Opjordsmoen S, Sandvik L, Friis S (2012)
Mechanical and pharmacological restraints in acute psychiatric wards--why and how are they used?
Psychiatry Res, 209 (1), 91-7
PubMed 23219102

Larsson S, Andreassen OA, Aas M, Røssberg JI, Mork E, Steen NE, Barrett EA, Lagerberg TV, Peleikis D, Agartz I, Melle I, Lorentzen S (2012)
High prevalence of childhood trauma in patients with schizophrenia spectrum and affective disorder
Compr Psychiatry, 54 (2), 123-7
PubMed 22901835

Lorentzen S (2012)
[Psychotherapy training in specialist education]
Tidsskr Nor Laegeforen, 132 (4), 394-5
PubMed 22353827

Mork E, Mehlum L, Barrett EA, Agartz I, Harkavy-Friedman JM, Lorentzen S, Melle I, Andreassen OA, Walby FA (2012)
Self-harm in patients with schizophrenia spectrum disorders
Arch Suicide Res, 16 (2), 111-23
PubMed 22551042

Peleikis DE, Varga M, Sundet K, Lorentzen S, Agartz I, Andreassen OA (2012)
Schizophrenia patients with and without post-traumatic stress disorder (PTSD) have different mood symptom levels but same cognitive functioning
Acta Psychiatr Scand, 127 (6), 455-63
PubMed 23176609

Aas M, Steen NE, Agartz I, Aminoff SR, Lorentzen S, Sundet K, Andreassen OA, Melle I (2012)
Is cognitive impairment following early life stress in severe mental disorders based on specific or general cognitive functioning?
Psychiatry Res, 198 (3), 495-500
PubMed 22472845

Publications 2011

Knutzen M, Mjosund NH, Eidhammer G, Lorentzen S, Opjordsmoen S, Sandvik L, Friis S (2011)
Characteristics of psychiatric inpatients who experienced restraint and those who did not: a case-control study
Psychiatr Serv, 62 (5), 492-7
PubMed 21532074

Lorentzen S, Bakali JV, Hersoug AG, Hagtvet KA, Ruud T, Høglend P (2011)
Psychodynamic group psychotherapy: impact of group length and therapist professional characteristics on development of therapeutic alliance
Clin Psychol Psychother, 19 (5), 420-33
PubMed 21626613

Lorentzen S, Høglend P, Martinsen EW, Ringdal E (2011)
Practice-based evidence: patients who did not respond to group analysis
Int J Group Psychother, 61 (3), 366-95
PubMed 21728705

Steen NE, Lorentzen S, Barrett EA, Lagerberg TV, Hope S, Larsson S, Berg AO, Agartz I, Melle I, Berg JP, Andreassen OA (2011)
Sex-specific cortisol levels in bipolar disorder and schizophrenia during mental challenge--relationship to clinical characteristics and medication
Prog Neuropsychopharmacol Biol Psychiatry, 35 (4), 1100-7
PubMed 21420462

Steen NE, Methlie P, Lorentzen S, Hope S, Barrett EA, Larsson S, Mork E, Almås B, Løvås K, Agartz I, Melle I, Berg JP, Andreassen OA (2011)
Increased systemic cortisol metabolism in patients with schizophrenia and bipolar disorder: a mechanism for increased stress vulnerability?
J Clin Psychiatry, 72 (11), 1515-21
PubMed 21367348

Aas M, Djurovic S, Athanasiu L, Steen NE, Agartz I, Lorentzen S, Sundet K, Andreassen OA, Melle I (2011)
Serotonin transporter gene polymorphism, childhood trauma, and cognition in patients with psychotic disorders
Schizophr Bull, 38 (1), 15-22
PubMed 21908796

Publications 2010

Athanasiu L, Mattingsdal M, Melle I, Inderhaug E, Lien T, Agartz I, Lorentzen S, Morken G, Andreassen OA, Djurovic S (2010)
Intron 12 in NTRK3 is associated with bipolar disorder
Psychiatry Res, 185 (3), 358-62
PubMed 20554328

Bakali JV, Wilberg T, Hagtvet KA, Lorentzen S (2010)
Sources Accounting for Alliance and Cohesion at Three Stages in Group Psychotherapy: Variance Component Analyses
Group Dyn.-Theory Res. Pract., 14 (4), 368-383

Barrett EA, Sundet K, Simonsen C, Agartz I, Lorentzen S, Mehlum L, Mork E, Andreassen OA, Melle I (2010)
Neurocognitive functioning and suicidality in schizophrenia spectrum disorders
Compr Psychiatry, 52 (2), 156-63
PubMed 21295222

Djurovic S, Gustafsson O, Mattingsdal M, Athanasiu L, Bjella T, Tesli M, Agartz I, Lorentzen S, Melle I, Morken G, Andreassen OA (2010)
A genome-wide association study of bipolar disorder in Norwegian individuals, followed by replication in Icelandic sample
J Affect Disord, 126 (1-2), 312-6
PubMed 20451256

Hope S, Melle I, Aukrust P, Agartz I, Lorentzen S, Steen NE, Djurovic S, Ueland T, Andreassen OA (2010)
Osteoprotegerin levels in patients with severe mental disorders
J Psychiatry Neurosci, 35 (5), 304-10
PubMed 20569643

Høglend P, Dahl HS, Hersoug AG, Lorentzen S, Perry JC (2010)
Long-term effects of transference interpretation in dynamic psychotherapy of personality disorders
Eur Psychiatry, 26 (7), 419-24
PubMed 20810254

Lorentzen S, Ruud T, Grawe RW (2010)
Group therapy in community mental health centres. A Norwegian survey
Nord. Psychol., 62 (3), 20-34

Steen NE, Tesli M, Kähler AK, Methlie P, Hope S, Barrett EA, Larsson S, Mork E, Løvås K, Røssberg JI, Agartz I, Melle I, Djurovic S, Lorentzen S, Berg JP, Andreassen OA (2010)
SRD5A2 is associated with increased cortisol metabolism in schizophrenia spectrum disorders
Prog Neuropsychopharmacol Biol Psychiatry, 34 (8), 1500-6
PubMed 20800085

Publications 2009

Bakali JV, Baldwin SA, Lorentzen S (2009)
Modeling group process constructs at three stages in group psychotherapy
Psychother Res, 19 (3), 332-43
PubMed 20183394

Hope S, Melle I, Aukrust P, Steen NE, Birkenaes AB, Lorentzen S, Agartz I, Ueland T, Andreassen OA (2009)
Similar immune profile in bipolar disorder and schizophrenia: selective increase in soluble tumor necrosis factor receptor I and von Willebrand factor
Bipolar Disord, 11 (7), 726-34
PubMed 19839997

Larsson S, Lorentzen S, Mork E, Barrett EA, Steen NE, Lagerberg TV, Berg AO, Aminoff SR, Agartz I, Melle I, Andreassen OA (2009)
Age at onset of bipolar disorder in a Norwegian catchment area sample
J Affect Disord, 124 (1-2), 174-7
PubMed 19931918

Publications 2008

Lorentzen S (2008)
Cohesion, Alliance, and outcome in group psychotherapy: comments on Joyce et al. (2007) and Johnson (2007)
Int J Group Psychother, 58 (3), 403-9
PubMed 18613341

Lorentzen S, Høglend PA (2008)
Moderators of the effects of treatment length in long-term psychodynamic group psychotherapy
Psychother Psychosom, 77 (5), 321-2
PubMed 18663333

Viken K, Lonning V, Røstad AL, Korsmo M, Lorentzen S (2008)
[The ward atmosphere and satisfaction in four psychogeriatric wards]
Tidsskr Nor Laegeforen, 128 (3), 310-2
PubMed 18264156

Publications 2005

Lorentzen S, Høglend P (2005)
Predictors of change after long-term analytic group psychotherapy
J Clin Psychol, 61 (12), 1541-53
PubMed 16193478

Publications 2004

Lorentzen S, Høglend P (2004)
Predictors of change during long-term analytic group psychotherapy
Psychother Psychosom, 73 (1), 25-35
PubMed 14665793

Lorentzen S, Sexton HC, Høglend P (2004)
Therapeutic alliance, cohesion and outcome in a long-term analytic group. A preliminary study
Nord J Psychiatry, 58 (1), 33-40
PubMed 14985152

Publications 2002

Lorentzen S, Bøgwald KP, Høglend P (2002)
Change during and after long-term analytic group psychotherapy
Int J Group Psychother, 52 (3), 419-29
PubMed 12082680

Lorentzen S, Maar V, Sørlie T (2002)
Block-training in group psychotherapy in the Baltic States: Experiences from three years of training
Nord J Psychiatry, 56 (2), 145-50
PubMed 11960568

Publications 2000

Lorentzen S (2000)
[The basis of psychiatric treatment--from belief to science]
Tidsskr Nor Laegeforen, 120 (16), 1912-3
PubMed 10925627

Publications 1996

Melle I, Friis S, Hauff E, Island TK, Lorentzen S, Vaglum P (1996)
The importance of ward atmosphere in inpatient treatment of schizophrenia on short-term units
Psychiatr Serv, 47 (7), 721-6
PubMed 8807685

Publications 1995

Lorentzen S, Herlofsen P, Karterud S, Ruud T (1995)
Block training in group analysis: the Norwegian program
Int J Group Psychother, 45 (1), 73-89
PubMed 7890454

LORENTZEN S, ISLAND TK, FRIIS S, HAUFF E, VAGLUM P (1995)
THE ULLEVAL ACUTE-WARD FOLLOW-UP-STUDY - REFLECTIONS ON THE TREATMENT OF PSYCHOTIC-PATIENTS WHO COMMITTED SUICIDE
Nord. J. Psychiatr., 49 (1), 5-10

Publications 1994

Josefsen K, Nielsen H, Lorentzen S, Damsbo P, Buschard K (1994)
Circulating monocytes are activated in newly diagnosed type 1 diabetes mellitus patients
Clin Exp Immunol, 98 (3), 489-93
PubMed 7994912

Publications 1991

FRIIS S, HAUFF E, ISLAND TK, LORENTZEN S, MELLE I, VAGLUM P (1991)
THE ULLEVAL ACUTE WARD FOLLOW-UP-STUDY - A PERSONAL 7-YEAR FOLLOW-UP OF PATIENTS WITH FUNCTIONAL-PSYCHOSIS ADMITTED TO THE ACUTE WARD OF A CATCHMENT-AREA
Psychopathology, 24 (5), 316-327

Friis S, Hauff E, Island TK, Lorentzen S, Melle I, Vaglum P (1991)
The Ullevål acute ward follow-up study: a personal 7-year follow-up of patients with functional psychosis admitted to the acute ward of a catchment area
Psychopathology, 24 (5), 316-27
PubMed 1784708

Publications 1981

Lorentzen S (1981)
Problems of establishing a therapeutic community ward within a mental hospital
J Oslo City Hosp, 31 (4-6), 47-9
PubMed 7320786

Lorentzen S (1981)
Why do psychiatric patients return? A pilot study of patients re-admitted to a psychiatric ward in a general hospital
J Oslo City Hosp, 31 (4-6), 63-6
PubMed 7320790

Publications 1979

Lorentzen S (1979)
[Intracranial expansive lesions in patients at a psychiatric admitting department]
Tidsskr Nor Laegeforen, 99 (8), 413-5
PubMed 432866