ArticleSocial psychiatry and psychiatric epidemiology2007
Non-participation may bias the results of a psychiatric survey: an analysis from the survey including magnetic resonance imaging within the Northern Finland 1966 Birth Cohort.
Article in Social psychiatry and psychiatric epidemiology, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 32 papers.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
32 citing papers in PubMed.
- Mental disorder symptoms and diagnoses are differently associated with labour market attachment and registered income until midlife: The Northern Finland Birth Cohort 1966.The International journal of social psychiatry · 2025Article
- Assessing the validity of a self-reported clinical diagnosis of schizophrenia.Schizophrenia (Heidelberg, Germany) · 2024Article
- Impact of non-participation bias due to psychiatric illness on mortality and cardiovascular event estimates: a Danish longitudinal population study.BMJ public health · 2024Article
- Assessing the validity of a self-reported clinical diagnosis of schizophrenia.medRxiv : the preprint server for health sciences · 2023Article
- What do we not know (yet) about recovery colleges? A study protocol on their (cost-)effectiveness, mechanisms of action, fidelity and positioning.BMC psychiatry · 2023Article
- Severe and common mental disorders and risk of emergency hospital admissions for ambulatory care sensitive conditions among the UK Biobank cohort.BJPsych open · 2023Article
- User experiences of an online therapist-guided psychotherapy platform, OPTT: A cross-sectional study.Internet interventions · 2023Article
- Association between participation in the Northern Finland Birth Cohort 1966 study and use of psychiatric care services.PloS one · 2023Article
- Employment trajectories until midlife in schizophrenia and other psychoses: the Northern Finland Birth Cohort 1966.Social psychiatry and psychiatric epidemiology · 2023Article
- Psychopathology in Children and Adolescents in Lebanon Study (PALS): a national household survey.Social psychiatry and psychiatric epidemiology · 2022Article
- Participating in Longitudinal Observational Research on Psychiatric Rehabilitation: Quantitative Results From a Patient Perspective Study.Frontiers in psychiatry · 2022Article
- Biases in health expectancies due to educational differences in survey participation of older Europeans: It's worth weighting for.The European journal of health economics : HEPAC : health economics in prevention and care · 2020Article
- Sex differences in youth with mental health problems in inpatient, outpatient and youth justice settings.BMC psychiatry · 2020Article
- Autism prevalence in China is comparable to Western prevalence.Molecular autism · 2019Article
- The Representativeness of Participants With Severe Mental Illness in a Psychosocial Clinical Trial.Frontiers in psychiatry · 2018Article
- Longitudinal regional brain volume loss in schizophrenia: Relationship to antipsychotic medication and change in social function.Schizophrenia research · 2015Article
- Poor premorbid school performance, but not severity of illness, predicts cognitive decline in schizophrenia in midlife.Schizophrenia research. Cognition · 2015Article
- Neurocognition as a predictor of outcome in schizophrenia in the Northern Finland Birth Cohort 1966.Schizophrenia research. Cognition · 2015Article
- Twenty Years of Schizophrenia Research in the Northern Finland Birth Cohort 1966: A Systematic Review.Schizophrenia research and treatment · 2015Review
- Longitudinal changes in total brain volume in schizophrenia: relation to symptom severity, cognition and antipsychotic medication.PloS one · 2014Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
6 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
objectiveA major reason for limited validity of research is non-participation. Subjects with severe mental illness tend to cumulate in the group of non-participants, causing selection bias. We tested the hypothesis that severe psychosis is linked to non-participation in a field survey including magnetic resonance imaging (MRI) of the brain, psychiatric interviews and cognitive testing among subjects with psychosis. Furthermore, we wanted to explore other associative factors expected to affect non-participation.
methodsMembers of the Northern Finland 1966 Birth Cohort with a lifetime diagnosis of psychosis (N = 145) were invited to participate in the survey conducted in 1999-2001. Non-participation was determined by refusal or loss of contact. Data were gathered in earlier phases of the follow-up study or using register data.
resultsNinety-one (63%) subjects attended the study. Compared to participants, non-participants were more often patients with schizophrenia and had more psychiatric hospitalisations, they had more positive psychosis symptoms during their illness course and they were more often on disability pension. Married subjects participated more often than those who were not married.
conclusionThis study suggests that among subjects with psychosis, particularly those subjects who have the most severe course of illness are less willing to participate. This may lead to biased estimates when studying subjects with severe mental disorders.
Indexed as
Identifiers
17404677What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.