Publications 2025

Kreis I, Fjelnseth Wold K, Åsbø G, Bärthel Flaaten C, Engen MJ, Lyngstad SH, Hustad Widing L, Sheikh MA, Frogner Werner MC, Bakken E, Ueland T, Steen NE, Melle I (2025)
Recent cannabis use affects the association between baseline immune markers and long-term outcomes in psychosis
Transl Psychiatry, 15 (1), 282
DOI 10.1038/s41398-025-03498-x, PubMed 40813774

Åsbø G, Haavind H, Kruse SH, Wold KF, Hegelstad WTV, Romm KL, Slade M, Ueland T, Melle I, Simonsen C (2025)
"Why shouldn't I expect a lot from life?" - a qualitative study of what facilitates long-term recovery in first-episode psychosis
BMC Psychiatry, 25 (1), 423
DOI 10.1186/s12888-025-06681-y, PubMed 40295990

Publications 2024

Kreis I, Lagerberg TV, Wold KF, Åsbø G, Simonsen C, Flaaten CB, Engen MJ, Lyngstad SH, Widing LH, Ueland T, Melle I (2024)
Behind the heterogeneity in the long-term course of first-episode psychosis: Different psychotic symptom trajectories are associated with different patterns of cannabis and stimulant use
Schizophr Res, 271, 91-99
DOI 10.1016/j.schres.2024.07.006, PubMed 39018985

Kreis I, Wold KF, Åsbø G, Simonsen C, Flaaten CB, Engen MJ, Lyngstad SH, Widing LH, Ueland T, Melle I (2024)
The relationship between visual hallucinations, functioning, and suicidality over the course of illness: a 10-year follow-up study in first-episode psychosis
Schizophrenia (Heidelb), 10 (1), 30
DOI 10.1038/s41537-024-00450-8, PubMed 38431677

Simonsen C, Åsbø G, Slade M, Wold KF, Widing L, Flaaten CB, Engen MJ, Lyngstad SH, Gardsjord E, Bjella T, Romm KL, Ueland T, Melle I (2024)
A good life with psychosis: rate of positive outcomes in first-episode psychosis at 10-year follow-up
Psychol Med, 54 (9), 2112-2121
DOI 10.1017/S0033291724000205, PubMed 38389456

Wold KF, Kreis IV, Åsbø G, Flaaten CB, Widing L, Engen MJ, Lyngstad SH, Johnsen E, Ueland T, Simonsen C, Melle I (2024)
Long-term clinical recovery and treatment resistance in first-episode psychosis: a 10-year follow-up study
Schizophrenia (Heidelb), 10 (1), 69
DOI 10.1038/s41537-024-00489-7, PubMed 39174576

Wold KF, Ottesen A, Flaaten CB, Kreis I, Lagerberg TV, Romm KL, Simonsen C, Widing L, Åsbø G, Melle I (2024)
Childhood trauma and treatment resistance in first-episode psychosis: Investigating the role of premorbid adjustment and duration of untreated psychosis
Schizophr Res, 270, 441-450
DOI 10.1016/j.schres.2024.07.001, PubMed 38991420

Åsbø G, Haavind H, Kruse SH, Wold KF, Hegelstad WTV, Romm KL, Slade M, Ueland T, Melle I, Simonsen C (2024)
Taking what you get or Getting what you Need: A Qualitative Study on Experiences with Mental Health and Welfare Services in Long-Term Recovery in First-Episode Psychosis
Community Ment Health J, 61 (2), 350-364
DOI 10.1007/s10597-024-01356-6, PubMed 39414695

Publications 2023

Flaaten CB, Melle I, Bjella T, Engen MJ, Åsbø G, Wold KF, Widing L, Gardsjord E, Øie MG, Lyngstad SH, Haatveit B, Simonsen C, Ueland T (2023)
Long-term course of cognitive functioning in bipolar disorder: A ten-year follow-up study
Bipolar Disord, 26 (2), 136-147
DOI 10.1111/bdi.13364, PubMed 37356974

Ihler HM, Lyngstad SH, Gardsjord ES, Widing LH, Flaaten CB, Åsbø G, Wold KF, Engen MJ, Simonsen C, Ueland T, Lagerberg TV, Melle I, Romm KL (2023)
The trajectory of two negative symptom dimensions in first-episode psychosis and the role of cannabis use: A 10-year follow-up study
Schizophr Res, 252, 317-325
DOI 10.1016/j.schres.2023.01.024, PubMed 36706477

Widing L, Simonsen C, Bjella T, Engen MJ, Flaaten CB, Gardsjord E, Haatveit B, Haug E, Lyngstad SH, Svendsen IH, Vik RK, Wold KF, Åsbø G, Ueland T, Melle I (2023)
Long-term Outcomes of People With DSM Psychotic Disorder NOS
Schizophr Bull Open, 4 (1), sgad005
DOI 10.1093/schizbullopen/sgad005, PubMed 39145337

Wold KF, Ottesen A, Camilla BF, Johnsen E, Lagerberg TV, Romm KL, Simonsen C, Ueland T, Widing L, Åsbø G, Melle I (2023)
Early identification of treatment non-response in first-episode psychosis
Eur Psychiatry, 66 (1), e30
DOI 10.1192/j.eurpsy.2023.15, PubMed 36915260

Publications 2022

Engen MJ, Vaskinn A, Melle I, Færden A, Lyngstad SH, Flaaten CB, Widing LH, Wold KF, Åsbø G, Haatveit B, Simonsen C, Ueland T (2022)
Cognitive and Global Functioning in Patients With First-Episode Psychosis Stratified by Level of Negative Symptoms. A 10-Year Follow-Up Study
Front Psychiatry, 13, 841057
DOI 10.3389/fpsyt.2022.841057, PubMed 35401286

Flaaten CB, Melle I, Bjella T, Engen MJ, Åsbø G, Wold KF, Widing L, Gardsjord E, Sæther LS, Øie MG, Lyngstad SH, Haatveit B, Simonsen C, Ueland T (2022)
Domain-specific cognitive course in schizophrenia: Group- and individual-level changes over 10 years
Schizophr Res Cogn, 30, 100263
DOI 10.1016/j.scog.2022.100263, PubMed 35783460

Flaaten CB, Melle I, Gardsjord E, Bjella T, Engen MJ, Vaskinn A, Åsbø G, Wold KF, Widing L, Lyngstad SH, Haatveit B, Simonsen C, Ueland T (2022)
Course of intellectual functioning in schizophrenia and bipolar disorder: a 10-year follow-up study
Psychol Med, 53 (6), 2662-2670
DOI 10.1017/S0033291721004645, PubMed 35256030

Widing L, Simonsen C, Flaaten CB, Haatveit B, Vik RK, Wold KF, Åsbø G, Ueland T, Melle I (2022)
Premorbid characteristics of patients with DSM-IV psychotic disorders
Compr Psychiatry, 115, 152310
DOI 10.1016/j.comppsych.2022.152310, PubMed 35385814

Åsbø G, Ueland T, Haatveit B, Bjella T, Flaaten CB, Wold KF, Widing L, Engen MJ, Lyngstad SH, Gardsjord E, Romm KL, Melle I, Simonsen C (2022)
The Time is Ripe for a Consensus Definition of Clinical Recovery in First-episode Psychosis: Suggestions Based on a 10-Year Follow-up Study
Schizophr Bull, 48 (4), 839-849
DOI 10.1093/schbul/sbac035, PubMed 35419608

Publications 2020

Widing L, Simonsen C, Flaaten CB, Haatveit B, Vik RK, Wold KF, Åsbø G, Ueland T, Melle I (2020)
Symptom Profiles in Psychotic Disorder Not Otherwise Specified
Front Psychiatry, 11, 580444
DOI 10.3389/fpsyt.2020.580444, PubMed 33281644