ArticleCanadian journal of psychiatry. Revue canadienne de psychiatrie2015
Validation of a Population-Based Algorithm to Detect Chronic Psychotic Illness.
Article in Canadian journal of psychiatry. Revue canadienne de psychiatrie, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT03919760 (Enhancing Evidence-Based Practice for Youth and Emerging Adults With Early Psychosis), which is not on this map. Cited by 115 papers, 2 of them syntheses that pooled it.
What it found
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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.
Enhancing Evidence-Based Practice for Youth and Emerging Adults With Early Psychosis: Implementation and Evaluation in Diverse Service Settings
Who cites it
115 citing papers in PubMed, 2 syntheses or guidelines pooled it.
- Psychiatric vulnerability and the risk for unintended pregnancies, a systematic review and meta-analysis.BMC pregnancy and childbirth · 2022Pooled it
- Identifying reproductive-aged women with physical and sensory disabilities in administrative health data: A systematic review.Disability and health journal · 2020Pooled it
- Trial
- Pregnancy Outcomes Among Individuals With Cerebral Palsy: A Population-Based Cohort Study.BJOG : an international journal of obstetrics and gynaecology · 2026Article
- Long-Term Trajectories of Multidimensional Outcomes in Psychosis Following Early Intervention During the Critical Period: The PEPP-Montreal 10+ Study Protocol.Early intervention in psychiatry · 2026Article
- Sex-specific drivers of non-affective psychotic disorders within migrant groups: A 25-year retrospective cohort study of 2 million migrants.Social psychiatry and psychiatric epidemiology · 2026Article
- Mortality following cancer diagnosis among people with non-affective psychoses: mediation by stage at diagnosis and time to treatment initiation.Social psychiatry and psychiatric epidemiology · 2026Article
- Risk of Non-Fatal Self-Injury Among Adolescent and Young Adult Survivors of Cancer: A Population-Based Matched Cohort Study.Cancer medicine · 2026Article
- Chronic Disease Management Among People Treated for Comorbid Serious Mental Illness and/or Substance Use Disorders: A Population-Based Observational Study.Community mental health journal · 2026Article
- Severe Outcomes and Length of Stay Among People With Schizophrenia Hospitalized for COVID-19: A Population-Based Retrospective Cohort Study.Schizophrenia bulletin · 2026Article
- Association between COVID-19 vaccination and sudden death in apparently healthy younger individuals: A population-based case-control study.PLoS medicine · 2026Article
- Incidence of psychotic disorders by birth cohort: a population-based cohort study in Ontario, Canada.CMAJ : Canadian Medical Association journal = journal de l'Association medicale canadienne · 2026Article
- Multiple Maternal Chronic Conditions and Risk of Severe Neonatal Morbidity and Mortality.JAMA network open · 2026Article
- Multiple Chronic Conditions Before Pregnancy and Risk of Adverse Maternal Health Outcomes: Population-Based Cohort Study.BJOG : an international journal of obstetrics and gynaecology · 2026Article
- Antipsychotics and other risk factors for mortality among people with schizophrenia during an extreme heat event: a population-based case-control study.Scientific reports · 2025Article
- Article
- Evaluation of Mortality in Users of Pimavanserin Compared with Other Atypical Antipsychotics in Patients with Parkinson's Disease Psychosis: An Update.Drug safety · 2025Article
- New perinatal mental health conditions diagnosed during COVID-19: a population-based, retrospective cohort study of birthing people in Ontario.Archives of women's mental health · 2025Observational
- Pathways to autism diagnosis in adulthood.Journal of neurodevelopmental disorders · 2025Article
- Antipsychotic treatment adherence and motor vehicle crash among drivers with schizophrenia: a case-crossover study.CMAJ : Canadian Medical Association journal = journal de l'Association medicale canadienne · 2025Article
55 more citing papers are in PubMed but not listed here.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
4 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
objectiveTo validate algorithms to detect people with chronic psychotic illness in population-based health administrative databases.
methodWe developed 8 algorithms to detect chronic psychotic illness using hospitalization and physician service claims data from administrative health databases in Ontario to identify cases of chronic psychotic illness between 2002 and 2007. Diagnostic data abstracted from the records of 281 randomly selected psychiatric patients from 2 hospitals in Toronto were linked to the administrative data cohort to test sensitivity, specificity, and positive predictive values (PPV) and negative predictive values.
resultsUsing only hospitalization data to capture chronic psychotic illness yielded the highest specificity (range 69.9% to 84.7%) and the highest PPV (range 55.2% to 80.8%). Using physician service claims in addition to hospitalization data to capture cases increased sensitivity (range 90.1% to 98.8%) but decreased specificity (range 31.1% to 68.0%) and PPV (range 38.4% to 71.1%).
conclusionUsing health administrative data to study population-based outcomes for people with chronic psychotic illness is feasible and valid. Researchers can select case identification methods based on whether a more sensitive or more specific definition of chronic psychotic illness is desired.
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