ArticleBMJ open2026
Incidence rates of diagnosed anxiety and depressive disorders in Québec, Canada: changes in trends after the COVID-19 pandemic using interrupted time series methods.
Article in BMJ open, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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
0 citing papers in PubMed.
No citing paper in PubMed yet.
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
objectivesThe COVID-19 pandemic had profound effects on mental health worldwide. Within Canada, the province of Québec experienced high increases in mental health distress and implemented particularly strict public health measures. These unique characteristics motivate the examination of the local experience of the COVID-19 pandemic. This study aimed to examine changes in incidence rates of diagnosed anxiety and depressive disorders in Québec, Canada before and after the COVID-19 pandemic.
designAnalyses drew on administrative health records from the Québec Integrated Chronic Disease Surveillance System from January 2010 to March 2022 (147 months).
settingThe setting for analyses was the province of Québec, Canada.
participantsThe analytical sample covered January 2010 to March 2022 (147 months) for all individuals aged 15 years and older (men and women) eligible for the Québec public health insurance plan. PRIMARY AND SECONDARY OUTCOME MEASURES: Interrupted time series methods were used to estimate counterfactual trends of monthly incidence rates of diagnosed anxiety and depressive disorders under conditions with and without the impact of the COVID-19 pandemic. Analyses adjusted for local public health policies, including the enactment of the
resultsFollowing the onset of the COVID-19 pandemic, monthly incidence rates of diagnosed anxiety disorders were 4.9%
conclusionsFindings encourage further consideration of the indirect consequences of public health crises and related responses on population mental health. They also highlight the need to examine dynamics in local jurisdictions and support reflection on policy investments in mental health protection and promotion.
Indexed as
Identifiers
What 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.