ArticleFrontiers in psychiatry2026
Trends of incident stimulant use disorder diagnoses before and after the COVID-19 pandemic in British Columbia (2013-2024): a population-based study.
Article in Frontiers in psychiatry, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Background: There is rising detection of unregulated stimulants (e.g. cocaine and methamphetamine) in toxicology results among people who died of unregulated drug poisoning. Nevertheless, little research describes the population-level trends of incident (new) stimulant use disorder (StUD) diagnoses. This study reports on trends of incident StUD diagnoses pre- and post-Covid-19 public health emergency in British Columbia (BC), Canada. Methods: Interrupted time series analyses were conducted with BC's COVID-19 public health emergency declaration on March 16, 2020 as the interruption point. Descriptive statistics on demographic and health service contact were conducted for the population diagnosed before (January 1, 2013 - March 16, 2020) and after (March 17, 2020 - December 31, 2024) the COVID-19 pandemic emergency declaration. Seasonal autoregressive integrated moving average (sARIMA) models were used to .estimate changes to incident StuD diagnoses rates before and after the COVID-19 pandemic declaration. Results: 38, 217 people were identified with incident StUD diagnoses between January 1, 2013 and March 31, 2024. The average diagnosis rate of incident StUD was 5.18 per 100, 000 in the pre-pandemic period and increased by 19.9% to 6.21 per 100, 000 in the post-pandemic period. The estimated increase in slope (ramp) of incident StUD was 0.0315 cases per 100, 000 population per month (95% CI: -0.00182, 0.06482). Conclusions: We identified a rate of increase in incident StUD diagnoses since the COVID-19 pandemic declaration in BC that was not statistically significant. Our study highlights the need for more comprehensive linked data -including, administrative health data, surveys, and other services/program data (e.g., community services, private sector) to better disentangle StUD incidence and prevalence to inform services to meet the needs of people with StUD. Stimulant use, Stimulant use disorder, pandemic, Covid-19, methamphetamines, cocaine, interrupted time series.
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