Suicide mortality in Paraíba (Brazil) between 2010 and 2021 and the impact of the Covid-19 pandemic: an ecological study

Abstract

This study aims to analyze the rates of suicide mortality in the State of Paraíba (Brazil) between 2010 and 2021, describing the impact of the COVID-19 pandemic on the suicide rates in 2020 and 2021. We here proposed a mixed longitudinal - ecological study that employed secondary data provided by the Mortality Information System regarding deaths from self-harm in 2010 - 2021 in the state of Paraíba. It also included cases of death from intentional self-inflicted injuries, coded X60-X84 according to the 10th International Classification of Diseases (ICD-10). A linear regression was used to evaluate the relationship between the mortality rates and the years analyzed and also to calculate the predicted values for 2020 and 2021 based on findings from previous years. Although the suicide rates observed in 2020 and 2021 were higher than expected (6.387 and 6.789, respectively), they were still within the confidence interval. The present study found a constant increase in the suicide mortality during the period studied, even if without a significant difference between the expected trends according to previous years and those observed during the COVID-19 pandemic.