Publications 2025

Birkenæs V, Parekh P, Hegemann L, Bakken NR, Frei E, Jaholkowski P, Smeland OB, Susser E, Rodriguez KM, Tesfaye M, Andreassen OA, Havdahl A, Sønderby IE (2025)
Youth psychotic experiences: psychometric evaluation and diagnostic associations of the CAPE-16 in adolescents from the Norwegian Mother, Mather and Child Cohort
J Child Psychol Psychiatry (in press)
DOI 10.1111/jcpp.70007, PubMed 40759589

Frei E, Filiz TT, Frei O, Loughnan R, Jaholkowski P, Parker N, Bakken NR, Birkenæs V, Shadrin AA, Ask H, Andreassen OA, Smeland OB (2025)
Genome-wide analysis of screen behaviors among adolescents identifies novel loci and overlap with educational attainment and mental disorders
Sci Rep, 15 (1), 34420
DOI 10.1038/s41598-025-17450-y, PubMed 41038950

Frei E, Frei O, Jaholkowski P, Parker N, Parekh P, Shadrin AA, Hagen E, Bakken NR, Birkenæs V, Ask H, Andreassen OA, Smeland OB (2025)
The phenotypic and genetic relationship between adolescent mental health and time spent on social media, gaming, and TV
Psychiatry Res, 353, 116761 (in press)
DOI 10.1016/j.psychres.2025.116761, PubMed 41061597

Roettger T, Askelund AD, Birkenæs V, Bjørndal LD, Bochynska A, Glaser BD, Kalandadze T, Korbmacher M, Malovic I, Mayor J, Parekh P, Quintana DS, Hannigan LJ (2025)
Transparency in epidemiological analyses of cohort data a case study of the Norwegian mother, father, and child cohort study (MoBa)
BMC Med Res Methodol, 25 (1), 171
DOI 10.1186/s12874-025-02601-6, PubMed 40597638

Publications 2024

Bakken NR, Parker N, Hannigan LJ, Hagen E, Parekh P, Shadrin A, Jaholkowski P, Frei E, Birkenæs V, Hindley G, Hegemann L, Corfield EC, Tesli M, Havdahl A, Andreassen OA (2024)
Childhood trajectories of emotional and behavioral difficulties are related to polygenic liability for mood and anxiety disorders
J Child Psychol Psychiatry, 66 (3), 350-365
DOI 10.1111/jcpp.14063, PubMed 39462222

Inova A, Birkenæs V, Quintana DS, Ormerod MBEG, Ueland T, Ueland T, Djurovic S, Andreassen O, Steen NE, Aas M (2024)
Cortisol and C-reactive protein (CRP) regulation in severe mental disorders
Psychoneuroendocrinology, 172, 107272
DOI 10.1016/j.psyneuen.2024.107272, PubMed 39740359

Jaholkowski P, Bahrami S, Fominykh V, Hindley GFL, Tesfaye M, Parekh P, Parker N, Filiz TT, Nordengen K, Hagen E, Koch E, Bakken NR, Frei E, Birkenæs V, Rahman Z, Frei O, Haavik J, Djurovic S, Dale AM, Smeland OB, O'Connell KS, Shadrin AA, Andreassen OA (2024)
Charting the shared genetic architecture of Alzheimer's disease, cognition, and educational attainment, and associations with brain development
Neurobiol Dis, 203, 106750
DOI 10.1016/j.nbd.2024.106750, PubMed 39608471

Mlakar V, Akkouh I, Halff EF, Srivastava DP, Birkenæs V, Ueland T, Quintana DS, Ormerod MBEG, Steen NE, Djurovic S, Andreassen OA, Aas M (2024)
Telomere biology and its maintenance in schizophrenia spectrum disorders: Exploring links to cognition
Schizophr Res, 272, 89-95
DOI 10.1016/j.schres.2024.08.011, PubMed 39208769

Tesfaye M, Jaholkowski P, Shadrin AA, van der Meer D, Hindley GFL, Holen B, Parker N, Parekh P, Birkenæs V, Rahman Z, Bahrami S, Kutrolli G, Frei O, Djurovic S, Dale AM, Smeland OB, O'Connell KS, Andreassen OA (2024)
Identification of novel genomic loci for anxiety symptoms and extensive genetic overlap with psychiatric disorders
Psychiatry Clin Neurosci, 78 (12), 783-791
DOI 10.1111/pcn.13742, PubMed 39301620

Publications 2023

Birkenæs V, Refsum Bakken N, Frei E, Jaholkowski P, Smeland OB, Tesfaye M, Agartz I, Susser E, Bresnahan M, Røysamb E, Nordbø Jørgensen K, Nesvåg R, Havdahl A, Andreassen OA, Elken Sønderby I (2023)
Psychometric Properties and Diagnostic Associations of the Short-Form Community Assessment of Psychic Experiences in a Population-Based Sample of 29 021 Adult Men
Schizophr Bull, 49 (5), 1229-1238
DOI 10.1093/schbul/sbad074, PubMed 37262330

Jaholkowski P, Shadrin AA, Jangmo A, Frei E, Tesfaye M, Hindley GFL, Haram M, Rahman Z, Athanasiu L, Bakken NR, Holen B, Fominykh V, Kutrolli G, Parekh P, Parker N, Rødevand L, Birkenæs V, Djurovic S, Frei O, O'Connell KS, Smeland OB, Tesli M, Andreassen OA (2023)
Associations Between Symptoms of Premenstrual Disorders and Polygenic Liability for Major Psychiatric Disorders
JAMA Psychiatry, 80 (7), 738-742
DOI 10.1001/jamapsychiatry.2023.1137, PubMed 37163253

Mlakar V, Birkenæs V, Elvsaashagen T, Ormerod MBEG, Quintana DS, Ueland T, Melle I, Lagerberg TV, Djurovic S, Martin-Ruiz C, Steen NE, Andreassen OA, Aas M (2023)
Telomere length and verbal learning in bipolar disorders
J Affect Disord, 339, 555-560
DOI 10.1016/j.jad.2023.07.087, PubMed 37459977

Publications 2021

Birkenæs V, Elvsåshagen T, Westlye LT, Høegh MC, Haram M, Werner MCF, Quintana DS, Lunding SH, Martin-Ruiz C, Agartz I, Djurovic S, Steen NE, Andreassen OA, Aas M (2021)
Telomeres are shorter and associated with number of suicide attempts in affective disorders
J Affect Disord, 295, 1032-1039
DOI 10.1016/j.jad.2021.08.135, PubMed 34706411