I. Joa

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Biological Insights From 108 Schizophrenia-Associated Genetic Loci

C. Spencer, K. Davis, P. Visscher, 2014, Nature.

A contribution of novel CNVs to schizophrenia from a genome-wide study of 41,321 subjects: CNV Analysis Group and the Schizophrenia Working Group of the Psychiatric Genomics Consortium

C. Spencer, K. Davis, P. Visscher, 2016, bioRxiv.

Evidence for Genetic Overlap Between Schizophrenia and Age at First Birth in Women.

P. Visscher, N. Wray, E. Bramon, 2016, JAMA psychiatry.

Genomic Dissection of Bipolar Disorder and Schizophrenia, Including 28 Subphenotypes

John P. Rice, Melissa J. Green, Robert C. Thompson, 2017, Cell.

Patients’ Experiences of Trust in the Patient-Nurse Relationship—A Systematic Review of Qualitative Studies

Inge Joa, Elisabeth Severinsson, Ingelin Testad, 2015 .

Personality and Social Psychology Is there an optimal factor structure of the Positive and Negative Syndrome Scale in patients with first-episode psychosis?

J. O. Johannessen, I. Melle, O. Andreassen, 2012 .

Genomic Dissection of Bipolar Disorder and Schizophrenia, Including 28 Subphenotypes

John P. Rice, Melissa J. Green, Robert C. Thompson, 2017, Cell.

Persistent increase in TNF and IL‐1 markers in severe mental disorders suggests trait‐related inflammation: a one year follow‐up study

S. Djurovic, I. Melle, O. Andreassen, 2017, Acta psychiatrica Scandinavica.

“We all have a responsibility”: a narrative discourse analysis of an information campaign targeting help-seeking in first episode psychosis

J. O. Johannessen, I. Joa, Marius Veseth, 2019, International Journal of Mental Health Systems.

Early detection of the first episode of schizophrenia and suicidal behavior.

I. Melle, T. McGlashan, E. Simonsen, 2006, The American journal of psychiatry.

Genomic Dissection of Bipolar Disorder and Schizophrenia, Including 28 Subphenotypes

John P. Rice, Melissa J. Green, Robert C. Thompson, 2017, Cell.

Frontline leadership for implementing clinical guidelines in Norwegian mental health services: a qualitative study.

Gro Ellen Mathisen, J. O. Johannessen, I. Joa, 2022, Journal of health organization and management.

Qualitative evaluation in nursing interventions—A review of the literature

I. Joa, E. Severinsson, K. Lode, 2020, Nursing open.

The relationship of verbal learning and verbal fluency with written story production: Implications for social functioning in first episode psychosis

K. Douglas, J. Gisselgård, I. Joa, 2012, Schizophrenia Research.

Use of medication algorithms in first episode psychosis: a naturalistic observational study

J. O. Johannessen, I. Joa, S. Opjordsmoen, 2016, Early intervention in psychiatry.

One-year effect of changing duration of untreated psychosis in a single catchment area.

J. O. Johannessen, I. Melle, T. McGlashan, 2007, The British journal of psychiatry. Supplement.

Systemic cell-adhesion molecules (CAM) in severe mental illness-potential role of intracellular CAM-1 in linking peripheral and neuro-inflammation.

S. Djurovic, I. Melle, O. Andreassen, 2022, Biological Psychiatry.

Can systematic implementation support improve programme fidelity by improving care providers’ perceptions of implementation factors? A cluster randomized trial

J. Øvretveit, G. Bond, J. Assmus, 2022, BMC Health Services Research.

Early Predictors of Ten-Year Course in First-Episode Psychosis.

J. O. Johannessen, I. Melle, T. McGlashan, 2016, Psychiatric services.

Contrasting Monosymptomatic Patients with Hallucinations and Delusions in First-Episode Psychosis Patients: A Five-Year Longitudinal Follow-Up Study

J. O. Johannessen, I. Melle, T. McGlashan, 2011, Psychopathology.

Journal Pre-proof Systemic cell-adhesion molecules (CAM) in severe mental illness-potential role of intracellular CAM-1 in linking peripheral and neuro-inflammation.

S. Djurovic, I. Melle, O. Andreassen, 2022 .

Associations between symptom and neurocognitive dimensions in clinical high risk for psychosis

J. O. Johannessen, I. Joa, I. Dalen, 2022, Schizophrenia Research: Cognition.

Information Campaigns: 10 Years of Experience in the Early Treatment and Intervention in Psychosis (TIPS) Study

J. O. Johannessen, I. Joa, T. Mcglashan, 2008 .

Visual Hallucinations in First-Episode Psychosis: Association with Childhood Trauma

J. O. Johannessen, K. Brønnick, J. Gisselgård, 2016, PloS one.

Long-term follow-up of the TIPS early detection in psychosis study: effects on 10-year outcome.

I. Melle, T. McGlashan, B. Auestad, 2012, The American journal of psychiatry.

Course and Predictors of Suicidality Over the First Two Years of Treatment in First-Episode Schizophrenia Spectrum Psychosis

J. O. Johannessen, I. Melle, T. McGlashan, 2010, Archives of suicide research : official journal of the International Academy for Suicide Research.

Attitudes toward standardized assessment tools and their use among clinicians in a public mental health service

I. Joa, C. Moltu, A. Jensen-Doss, 2019, Nordic journal of psychiatry.

Childhood trauma, antipsychotic medication, and symptom remission in first-episode psychosis

J. O. Johannessen, I. Melle, T. McGlashan, 2021, Psychological Medicine.

Baseline profiles of adolescent vs. adult‐onset first‐episode psychosis in an early detection program

J. O. Johannessen, I. Melle, T. McGlashan, 2009, Acta psychiatrica Scandinavica.

Involuntary hospitalization of first‐episode psychosis with substance abuse during a 2‐year follow‐up

I. Joa, Ø. Kristensen, T. Larsen, 2011, Acta psychiatrica Scandinavica.

First‐episode psychosis patients recruited into treatment via early detection teams versus ordinary pathways: course, outcome and health service use during first 2 years

J. O. Johannessen, I. Melle, T. McGlashan, 2007, Early intervention in psychiatry.

Primary prevention of psychosis through interventions in the symptomatic prodromal phase, a pragmatic Norwegian Ultra High Risk study

J. O. Johannessen, T. McGlashan, K. Brønnick, 2015, BMC Psychiatry.

Early identification of non‐remission in first‐episode psychosis in a two‐year outcome study

J. O. Johannessen, I. Melle, E. L. Mortensen, 2010, Acta psychiatrica Scandinavica.

Psychiatric patients’ attitudes towards being hospitalized: a national multicentre study in Norway

J. O. Johannessen, I. Joa, K. Brønnick, 2022, BMC Psychiatry.

Pathways to care for first-episode psychosis in an early detection healthcare sector

J. O. Johannessen, I. Melle, T. McGlashan, 2005, British Journal of Psychiatry.

Optimizing health‐care systems to promote early detection of psychosis

J. O. Johannessen, I. Joa, J. Langeveld, 2009, Early intervention in psychiatry.

Systemic Cell Adhesion Molecules in Severe Mental Illness: Potential Role of Intercellular CAM-1 in Linking Peripheral and Neuroinflammation

S. Djurovic, I. Melle, O. Andreassen, 2022, Biological Psychiatry.

Religiousness in First-Episode Psychosis

L. Lien, K. Hestad, L. J. Danbolt, 2017 .

Early detection of psychosis: positive effects on 5-year outcome

J. O. Johannessen, I. Melle, T. McGlashan, 2010, Psychological Medicine.

Experiences of antipsychotic use in patients with early psychosis: a two-year follow-up study

J. O. Johannessen, I. Joa, S. Opjordsmoen, 2017, BMC Psychiatry.

Job‐ and schoolprescription: A local adaptation to individual placement and support for first episode psychosis

J. O. Johannessen, I. Joa, J. Langeveld, 2018, Early intervention in psychiatry.

Age at first birth in women is genetically associated with increased risk of schizophrenia

Hoffmann, Hartmann, Roussos, 2017, Scientific Reports.

Increased circulating IL-18 levels in severe mental disorders indicate systemic inflammasome activation

S. Djurovic, I. Melle, O. Andreassen, 2021, Brain, Behavior, and Immunity.

Public attitudes towards involuntary admission and treatment by mental health services in Norway.

J. O. Johannessen, K. Brønnick, I. Joa, 2017, International journal of law and psychiatry.

Predictors of involuntary hospitalizations to acute psychiatry.

J. O. Johannessen, B. Auestad, I. Joa, 2013, International journal of law and psychiatry.

An exploratory study of the experiences of being both a mental health professional and carer in mental health services in Norway.

J. O. Johannessen, I. Joa, H. Stain, 2020, Journal of psychiatric and mental health nursing.

Genome wide meta-analysis identifies genomic relationships, novel loci, and pleiotropic mechanisms across eight psychiatric disorders

Hunna J. Watson, Ryan L. Collins, Dan J Stein, 2019, bioRxiv.

Contribution of copy number variants to schizophrenia from a genome-wide study of 41,321 subjects

Wei Cheng, Jianxin Shi, Elvira Bramon, 2016, Nature Genetics.

Mapping genomic loci implicates genes and synaptic biology in schizophrenia

Michael F. Green, Max W. Y. Lam, Catherine A. Sugar, 2022, Nature.

A polygenic resilience score moderates the genetic risk for schizophrenia.

M. Pirinen, P. Donnelly, C. Spencer, 2019, Molecular psychiatry.

Gene expression imputation across multiple brain regions provides insights into schizophrenia risk

Hae Kyung Im, Solveig K Sieberts, Kiran Girdhar, 2019, Nature Genetics.

A Comparison of Ten Polygenic Score Methods for Psychiatric Disorders Applied Across Multiple Cohorts

John P. Rice, Robert M. Maier, C. Spencer, 2020, Biological Psychiatry.

Complement genes contribute sex-biased vulnerability in diverse illnesses

Simon C. Potter, Christopher W. Whelan, M. Pirinen, 2020, Nature.

Inflammatory markers are altered in severe mental disorders independent of comorbid cardiometabolic disease risk factors

S. Djurovic, I. Melle, O. Andreassen, 2019, Psychological Medicine.

Genetic correlation between amyotrophic lateral sclerosis and schizophrenia

Denis C. Bauer, Annelot M. Dekker, Ashley R. Jones, 2017, Nature Communications.

Help seeking for mental health problems in an adolescent population: the effect of gender

I. Joa, H. Stain, J. Langeveld, 2019, Journal of mental health.

Gender differences in suicidal behaviour in patients with first‐episode psychosis

J. O. Johannessen, I. Joa, T. Larsen, 2015, Early Intervention in Psychiatry.

Psychometric Properties of the General Organizational Index (GOI): A Measure of Individualization and Quality Improvement to Complement Program Fidelity

R. Drake, G. Bond, I. Joa, 2020, Administration and Policy in Mental Health and Mental Health Services Research.

Voluntary or involuntary acute psychiatric hospitalization in Norway: A 24h follow up study.

J. O. Johannessen, K. Brønnick, I. Joa, 2018, International journal of law and psychiatry.

Structural and functional alterations in the brain during working memory in medication-naïve patients at clinical high-risk for psychosis

J. O. Johannessen, K. Brønnick, J. Gisselgård, 2018, PloS one.

Cognitive predictors of longitudinal positive symptom course in clinical high risk for psychosis

J. O. Johannessen, I. Joa, I. Dalen, 2021, Schizophrenia Research: Cognition.

Early Detection of Ultra High Risk for Psychosis in a Norwegian Catchment Area: The Two Year Follow-Up of the Prevention of Psychosis Study

J. O. Johannessen, I. Joa, H. Stain, 2021, Frontiers in Psychiatry.

Cognitive Profile in Ultra High Risk for Psychosis and Schizophrenia: A Comparison Using Coordinated Norms

J. O. Johannessen, M. Rettenbacher, I. Joa, 2019, Front. Psychiatry.

Language Lateralization and Auditory Attention Impairment in Young Adults at Ultra-High Risk for Psychosis: A Dichotic Listening Study

J. O. Johannessen, K. Brønnick, K. Kompus, 2018, Front. Psychol..

Early detection and intervention in first‐episode schizophrenia: a critical review

J. O. Johannessen, I. Melle, E. Simonsen, 2001, Acta psychiatrica Scandinavica.

Apathy in first episode psychosis patients: A ten year longitudinal follow-up study

J. O. Johannessen, I. Melle, T. McGlashan, 2012, Schizophrenia Research.

The key to reducing duration of untreated first psychosis: information campaigns.

J. O. Johannessen, I. Melle, T. McGlashan, 2007, Schizophrenia bulletin.

10 year course of IQ in first-episode psychosis: Relationship between duration of psychosis and long-term intellectual trajectories

J. O. Johannessen, I. Melle, T. McGlashan, 2015, Psychiatry Research.

The Tips Project

J. O. Johannessen, I. Melle, T. McGlashan, 2001 .

Parsing the impact of early detection on duration of untreated psychosis (DUP): Applying quantile regression to data from the Scandinavian TIPS study

J. O. Johannessen, I. Melle, C. Tek, 2019, Schizophrenia Research.

Early detection strategies for untreated first-episode psychosis

J. O. Johannessen, I. Melle, T. McGlashan, 2001, Schizophrenia Research.

Neurocognition and Duration of Psychosis: A 10-year Follow-up of First-Episode Patients.

J. O. Johannessen, I. Melle, T. McGlashan, 2015, Schizophrenia bulletin.

Impact of interpersonal trauma on the social functioning of adults with first-episode psychosis.

J. O. Johannessen, K. Brønnick, I. Joa, 2014, Schizophrenia bulletin.

Early detection, early symptom progression and symptomatic remission after ten years in a first episode of psychosis study

J. O. Johannessen, I. Melle, T. McGlashan, 2013, Schizophrenia Research.

Cannabis use is associated with 3years earlier onset of schizophrenia spectrum disorder in a naturalistic, multi-site sample (N=1119)

I. Melle, O. Andreassen, I. Joa, 2016, Schizophrenia Research.

Neurocognition and occupational functioning in patients with first-episode psychosis: A 2-year follow-up study

J. O. Johannessen, I. Melle, T. McGlashan, 2011, Psychiatry Research.

Publisher Correction: Gene expression imputation across multiple brain regions provides insights into schizophrenia risk

Kristen K. Dang, D. A. Lewis, C. Spencer, 2019, Nature Genetics.

Neurocognitive development in first episode psychosis 5years follow-up: Associations between illness severity and cognitive course

J. O. Johannessen, I. Melle, T. McGlashan, 2013, Schizophrenia Research.

Flat affect and social functioning: A 10year follow-up study of first episode psychosis patients

J. O. Johannessen, I. Melle, T. McGlashan, 2012, Schizophrenia Research.

Association between C-reactive protein levels and antipsychotic treatment during 12 months follow-up period after acute psychosis

V. Steen, M. Rettenbacher, S. Reitan, 2022, Schizophrenia Research.

Up-regulation of NOTCH4 gene expression in bipolar disorder.

S. Djurovic, I. Melle, O. Andreassen, 2012, The American journal of psychiatry.

Social Media and Social Functioning in Psychosis: A Systematic Review

J. O. Johannessen, I. Melle, L. Davidson, 2019, Journal of medical Internet research.

Reduced Expression of Emotion: A Red Flag Signalling Conversion to Psychosis in Clinical High Risk for Psychosis (CHR-P) Populations

J. O. Johannessen, I. Joa, M. Friedman-Yakoobian, 2022, Psychiatry.

Exploring specific predictors of psychosis onset over a 2‐year period: A decision‐tree model

J. O. Johannessen, I. Joa, M. Friedman-Yakoobian, 2021, Early intervention in psychiatry.

Verbal working memory deficits predict levels of auditory hallucination in first-episode psychosis

J. O. Johannessen, K. Brønnick, J. Gisselgård, 2014, Schizophrenia Research.

F136. PARSING DUP TO REFINE EARLY DETECTION: QUANTILE REGRESSION OF RESULTS FROM THE SCANDINAVIAN TIPS STUDY

Maria Ferrara, Fangyong Li, Sinan Guloksuz, 2018, Schizophrenia Bulletin.

The Effect of Intensive Implementation Support on Fidelity for Four Evidence-Based Psychosis Treatments: A Cluster Randomized Trial

J. O. Johannessen, R. Drake, J. Šaltytė Benth, 2021, Administration and Policy in Mental Health and Mental Health Services Research.

Treated incidence and baseline characteristics of substance induced psychosis in a Norwegian catchment area

J. O. Johannessen, P. McGorry, I. Joa, 2013, BMC Psychiatry.

Inflammatory evidence for the psychosis continuum model

S. Djurovic, I. Melle, O. Andreassen, 2016, Psychoneuroendocrinology.

Psychiatrists’ reflections on a medication-free program for patients with psychosis

J. O. Johannessen, I. Joa, S. Opjordsmoen, 2019, Journal of psychopharmacology.

Modern understanding of psychosis: from brain disease to stress disorder. And some other important aspects of psychosis…

J. O. Johannessen, I. Joa, 2021, Psychosis.

Complement genes contribute sex-biased vulnerability in diverse disorders

Christopher W. Whelan, M. Pirinen, C. Spencer, 2020, Nature.

The Family Psychoeducation Fidelity Scale: Psychometric Properties

I. Joa, J. O. Johannessen, K. S. Heiervang, 2020, Administration and Policy in Mental Health and Mental Health Services Research.

Pathways to care for first-episode psychosis Pathways to care for first-episode psychosis in an early detection healthcare sector in an early detection healthcare sector

J. O. Johannessen, I. Melle, E. Simonsen, 2005 .

Are multi family groups appropriate for patients with first episode psychosis? A 5‐year naturalistic follow‐up study

J. O. Johannessen, I. Melle, T. McGlashan, 2010, Acta psychiatrica Scandinavica.

Teachers' awareness for psychotic symptoms in secondary school: the effects of an early detection programme and information campaign

J. O. Johannessen, I. Joa, J. Langeveld, 2011, Early intervention in psychiatry.

Relation between premorbid adjustment, duration of untreated psychosis and close interpersonal trauma in first‐episode psychosis

J. O. Johannessen, I. Melle, E. Simonsen, 2018, Early intervention in psychiatry.

The Effect of Substance Use on 10-Year Outcome in First-Episode Psychosis

J. O. Johannessen, I. Melle, T. McGlashan, 2017, Schizophrenia bulletin.

Childhood interpersonal trauma and premorbid social adjustment as predictors of symptom remission in first episode psychosis

J. O. Johannessen, I. Melle, I. Joa, 2021, Schizophrenia Research.

Perspectives on Coordinating Health Services for Individuals with Serious Mental Illness – A Qualitative Study

I. Joa, Marianne Storm, J. N. Skjærpe, 2022, Journal of multidisciplinary healthcare.

Differential Effectiveness of Atypical Antipsychotics on Hallucinations

K. Hugdahl, M. Rettenbacher, S. Reitan, 2021, Journal of clinical psychopharmacology.

Subjective quality of life in first-episode psychosis. A ten year follow-up study

J. O. Johannessen, I. Melle, T. McGlashan, 2016, Schizophrenia Research.

“With a little help from my friends” social predictors of clinical recovery in first-episode psychosis

J. O. Johannessen, I. Melle, L. Davidson, 2017, Psychiatry Research.

“Everyone Needs a Friend Sometimes” – Social Predictors of Long-Term Remission In First Episode Psychosis

J. O. Johannessen, I. Melle, L. Davidson, 2016, Front. Psychol..

S0033291721003056jra 1479..1488

S. Djurovic, O. Andreassen, L. Westlye, 2023 .

Lower circulating neuron-specific enolase concentrations in adults and adolescents with severe mental illness

S. Djurovic, O. Andreassen, L. Westlye, 2021, Psychological Medicine.

Patient experiences of uncertainty - a synthesis to guide nursing practice and research.

I. Joa, E. Severinsson, B. S. Hansen, 2012, Journal of nursing management.

A comparison of adolescent- and adult-onset first-episode, non-affective psychosis: 2-year follow-up

J. O. Johannessen, I. Melle, B. Auestad, 2012, European Archives of Psychiatry and Clinical Neuroscience.

A 10-year follow-up study of violent victimization in first episode psychosis: Risk and protective factors

J. O. Johannessen, I. Melle, E. Simonsen, 2018, Psychiatry Research.

Ten year neurocognitive trajectories in first-episode psychosis

J. O. Johannessen, I. Melle, T. McGlashan, 2013, Front. Hum. Neurosci..

Prevalence and clinical characteristics of patients with obsessive-compulsive disorder in first-episode psychosis

B. Hansen, I. Joa, Kristen Hagen, 2013, BMC Psychiatry.

One-Year Outcome and Adherence to Pharmacological Guidelines in First-Episode Schizophrenia

J. O. Johannessen, K. Brønnick, I. Joa, 2020, Journal of clinical psychopharmacology.

One-year outcome and adherence to pharmacological guidelines in first-episode schizophrenia: Results from a consecutive cohort study

J. O. Johannessen, K. Brønnick, I. Joa, 2020 .

Causes and predictors of premature death in first‐episode schizophrenia spectrum disorders

I. Melle, T. McGlashan, E. Simonsen, 2017, World psychiatry : official journal of the World Psychiatric Association.

Preventing Poor Vocational Functioning in Psychosis Through Early Intervention.

J. O. Johannessen, I. Melle, K. Brønnick, 2017, Psychiatric services.

Depression and functioning are important to subjective quality of life after a first episode psychosis.

J. O. Johannessen, I. Melle, E. Simonsen, 2018, Comprehensive psychiatry.

Depressive symptoms in first‐episode psychosis: a 10‐year follow‐up study

J. O. Johannessen, I. Melle, T. McGlashan, 2016, Early intervention in psychiatry.

Amisulpride, aripiprazole, and olanzapine in patients with schizophrenia-spectrum disorders (BeSt InTro): a pragmatic, rater-blind, semi-randomised trial.

K. Hugdahl, V. Steen, M. Rettenbacher, 2020, The lancet. Psychiatry.

Is there an optimal factor structure of the Positive and Negative Syndrome Scale in patients with first-episode psychosis?

J. O. Johannessen, I. Melle, O. Andreassen, 2013, Scandinavian journal of psychology.

Obsessive-compulsive disorder (OCD) in patients with first- episode psychosis (FEP): A prospective study

G. Kvale, B. Hansen, I. Joa, 2014 .

Clinical insight among persons with schizophrenia spectrum disorders treated with amisulpride, aripiprazole or olanzapine: a semi-randomised trial

P. Munk-Jørgensen, M. Rettenbacher, S. Reitan, 2023, BMC Psychiatry.

Early Substance Use Cessation Improves Cognition—10 Years Outcome in First-Episode Psychosis Patients

J. O. Johannessen, I. Melle, K. Brønnick, 2019, Front. Psychiatry.

Obstacles to care in first‐episode psychosis patients with a long duration of untreated psychosis

J. O. Johannessen, I. Joa, T. Larsen, 2016, Early intervention in psychiatry.

Schizophrenia-associated somatic copy-number variants from 12,834 cases reveal recurrent NRXN1 and ABCB11 disruptions

Sara B. Linker, Evan Z. Macosko, Thomas G. Gilgenast, 2023, Cell genomics.

The Development of Subjective Quality of Life Over the First 2 Years in First-Episode Psychosis

J. O. Johannessen, I. Melle, T. McGlashan, 2010, The Journal of nervous and mental disease.

Is going into stable symptomatic remission associated with a more positive development of life satisfaction? A 10-year follow-up study of first episode psychosis

J. O. Johannessen, I. Melle, T. McGlashan, 2017, Schizophrenia Research.

Psychotherapy in Psychosis: Experiences of Fully Recovered Service Users

J. O. Johannessen, I. Melle, L. Davidson, 2018, Front. Psychol..

Antipsychotic treatment: experiences of fully recovered service users

J. O. Johannessen, I. Melle, L. Davidson, 2017, Journal of mental health.

Genomic Dissection of Bipolar Disorder and Schizophrenia, Including 28 Subphenotypes.

John P. Rice, Simon C. Potter, Melissa J. Green, 2018, Cell.

Partitioning heritability of regulatory and cell-type-specific variants across 11 common diseases.

Han Xu, Stephan Ripke, Chongzhi Zang, 2014, American journal of human genetics.

Biological Insights From 108 Schizophrenia-Associated Genetic Loci

C. Spencer, K. Davis, P. Visscher, 2014, Nature.

Antidepressive Effectiveness of Amisulpride, Aripiprazole, and Olanzapine in Patients With Schizophrenia Spectrum Disorders

M. Rettenbacher, S. Reitan, I. Joa, 2023, Journal of clinical psychopharmacology.

The central role of self-agency in clinical recovery from first episode psychosis

J. O. Johannessen, I. Melle, L. Davidson, 2017 .

Cognitive change and antipsychotic medications: Results from a pragmatic rater-blind RCT

M. Rettenbacher, I. Joa, E. Løberg, 2021, Schizophrenia Research: Cognition.

Association between early suicidal trajectories in first-episode psychosis and 10-year follow-up: TIPS registry-linked study.

J. O. Johannessen, I. Melle, B. Auestad, 2023, The lancet. Psychiatry.

Gene expression imputation across multiple brain regions provides insights into schizophrenia risk

N. Wray, H. Stefánsson, D. Rujescu, 2019, Nature Genetics.

Contribution of copy number variants to schizophrenia from a genome-wide study of 41,321 subjects

P. Visscher, J. Sebat, D. Malhotra, 2016, Nature Genetics.

Gender differences in suicidal behaviour in patients with first‐episode psychosis

J. O. Johannessen, I. Joa, T. Larsen, 2015, Early intervention in psychiatry.

A Comparison of Ten Polygenic Score Methods for Psychiatric Disorders Applied Across Multiple Cohorts.

John P. Rice, Warren W. Kretzschmar, Robert M. Maier, 2021, Biological psychiatry.

Does drug use affect the efficacy of amisulpride, aripiprazole and olanzapine in patients with schizophrenia spectrum disorders? Results from a pragmatic, randomised study.

M. Rettenbacher, S. Reitan, I. Joa, 2023, General hospital psychiatry.

Is going into stable symptomatic remission associated with a more positive development of life satisfaction? A 10-year follow-up study of first episode psychosis

J. O. Johannessen, I. Melle, T. McGlashan, 2017, Schizophrenia Research.

Variation in duration of untreated psychosis in an 18‐year perspective

J. O. Johannessen, I. Melle, T. McGlashan, 2014, Early intervention in psychiatry.

Treatment and violent behavior in persons with first episode psychosis during a 10-year prospective follow-up study

J. O. Johannessen, I. Melle, T. McGlashan, 2014, Schizophrenia Research.

Evidence for Genetic Overlap Between Schizophrenia and Age at First Birth in Women.

P. Visscher, E. Bramon, S. Djurovic, 2016, JAMA psychiatry.

Age at first birth in women is genetically associated with increased risk of schizophrenia

Eric, H. Stefánsson, S. Steinberg, 2020 .

Course and Predictors of Suicidality Over the First Two Years of Treatment in First-Episode Schizophrenia Spectrum Psychosis

J. O. Johannessen, I. Melle, T. McGlashan, 2010, Archives of suicide research : official journal of the International Academy for Suicide Research.

Public attitudes towards involuntary admission and treatment by mental health services in Norway.

J. O. Johannessen, K. Brønnick, I. Joa, 2017, International journal of law and psychiatry.

The relationship of verbal learning and verbal fluency with written story production: Implications for social functioning in first episode psychosis

J. Gisselgård, I. Joa, H. Stain, 2012, Schizophrenia Research.

Early detection, early symptom progression and symptomatic remission after ten years in a first episode of psychosis study

J. O. Johannessen, I. Melle, T. McGlashan, 2013, Schizophrenia Research.

Early identification of non‐remission in first‐episode psychosis in a two‐year outcome study

J. O. Johannessen, B. Rund, I. Joa, 2010, Acta psychiatrica Scandinavica.

Are multi family groups appropriate for patients with first episode psychosis? A 5‐year naturalistic follow‐up study

J. O. Johannessen, B. Rund, I. Joa, 2010, Acta psychiatrica Scandinavica.

Early detection of psychosis: positive effects on 5-year outcome

J. O. Johannessen, I. Melle, T. McGlashan, 2010, Psychological Medicine.

First‐episode psychosis patients recruited into treatment via early detection teams versus ordinary pathways: course and health service use during 5 years

J. O. Johannessen, I. Melle, T. McGlashan, 2007, Early intervention in psychiatry.

First‐episode psychosis patients recruited into treatment via early detection teams versus ordinary pathways: course, outcome and health service use during first 2 years

J. O. Johannessen, I. Melle, T. McGlashan, 2007, Early intervention in psychiatry.

Pathways to care for first-episode psychosis Pathways to care for first-episode psychosis in an early detection healthcare sector in an early detection healthcare sector

J. O. Johannessen, I. Melle, E. Simonsen, 2005 .

Is there an optimal factor structure of the Positive and Negative Syndrome Scale in patients with first-episode psychosis?

J. O. Johannessen, I. Melle, O. Andreassen, 2013, Scandinavian journal of psychology.

Exploring key determinants of health among individuals with serious mental Illness: qualitative insights from a first episode psychosis cohort, 20 years postdiagnosis

I. Joa, J. N. Skjærpe, W. Hegelstad, 2023, BMC Psychiatry.

The TIPS study and bias: Replies to Dr Amos

J. O. Johannessen, I. Melle, T. McGlashan, 2012, The Australian and New Zealand journal of psychiatry.

Early Detection in Psychosis: 5 year Outcome in the Scandinavian Tips-Study

J. O. Johannessen, I. Melle, T. McGlashan, 2011, European Psychiatry.

Involuntary hospitalization of first‐episode psychosis with substance abuse during a 2‐year follow‐up

I. Joa, T. Larsen, A. Opsal, 2011, Acta psychiatrica Scandinavica.

Population-based identity-by-descent mapping combined with exome sequencing to detect rare risk variants for schizophrenia

M. Pirinen, C. Freeman, P. Deloukas, 2020 .

Plasma Levels of the Cytokines B Cell-Activating Factor (BAFF) and A Proliferation-Inducing Ligand (APRIL) in Schizophrenia, Bipolar, and Major Depressive Disorder: A Cross Sectional, Multisite Study.

S. Djurovic, I. Melle, O. Andreassen, 2021, Schizophrenia bulletin.