Open-access Increase in suicide rates in Brazil: the impact of the COVID-19 pandemic

Objective:  To analyze the trends in suicide mortality rates in Brazil during the pre-pandemic (2016–2019) and pandemic (2020–2023) periods.

Methods:  This ecological time-series study used suicide mortality data from the Brazilian Mortality Information System (SIM). Deaths were classified according to ICD-10 codes for intentional self-harm (X60–X84), poisoning of undetermined intent (Y10–Y19), and their sequelae. Suicide mortality rates per 100,000 inhabitants were calculated by region, sex, age group, and period. Temporal trends were estimated using Joinpoint regression, with annual percent change (APC) and average annual percent change (AAPC), both with 95% confidence intervals.

Results:  Brazil showed a significant increasing trend in suicide mortality over the entire period (APC = 4.55%; p < 0.001). Pre-pandemic years presented a significant increase (AAPC = 5.07%; p = 0.03), and the pandemic period maintained an upward trend of lower magnitude (AAPC = 3.87%; p = 0.021). All macro-regions exhibited significant increases in the total period, with the most pronounced growth observed in the North (APC = 6.60%; p < 0.001) and Center-West (APC = 5.27%; p < 0.001). Among adults (20–59 years), rates increased in the total period (APC = 4.87%; p < 0.001) and during the pandemic (APC = 6.26%; p = 0.038). Among older adults (≥ 60 years), a significant increase occurred in the total period (APC = 1.40%; p = 0.01). Men and women showed significant increases in the total period, but only men maintained a rising trend during the pandemic. In the Southern region, only Santa Catarina showed a significant increase in the total period.

Conclusion:  Suicide mortality in Brazil increased both before and during the COVID-19 pandemic, with notable regional and demographic disparities. These findings highlight the need for suicide prevention policies that are sensitive to population inequalities and to the prolonged social and health impacts of large-scale crises.

KEY-WORDS
Suicide; COVID-19 Pandemic; Mental Health; Psychosocial Impact; Social Isolation

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