Trends in medically serious suicide attempts before and after COVID-19: a four-year retrospective analysis (2018-2022)

Background Suicide has become a first-order public health concern after the negative impact of COVID-19 on the general population's mental health. Several studies have analyzed the trends in suicide attempts (SA) before and after the onset of the pandemic, but few studies focus on the impact of the pandemic on medically serious suicide attempts (MSSA). Methods Participants were 385 hospitalized individuals >= 16 years old who made MSSA identified retrospectively through a review of e-medical records between 2018 and 2022 ("pre-COVID-19" and "COVID" periods). The two groups were compared on sociodemographic and clinical variables using Chi-square or Exact Fisher's tests for categorical variables and a Mann-Whitney test for continuous variables. To study the variation in MSSA over time, MSSA were aggregated monthly. Joinpoint regression analyses were used to assess time trends. Results A sample of 161 MSSA patients, 80 women and 81 men, were selected from 385 admissions after a suicide attempt (SA) in the four years (n = 160 pre-COVID period vs. n = 225 COVID period) (OR = 1.41; CI 95% = 1.0003-1.7223, p < 0.001). Sixty-eight patients with MSSA were admitted during the first period, and 93 during the COVID period (OR = 1.4 ; CI 95% = 1-1.9 ; p < 0.05). MSSA patients were more likely to be admitted to an intensive care unit during the COVID period than during the pre-COVID period (OR = 3.5; CI 95% = 1.7-6.9; p < 0.001). Conclusions This study highlights the need for research on suicide risk during and after crisis periods, such as the COVID-19 pandemic. It provides valuable knowledge on the incidence of SA needing hospitalization, MSSA, and highly severe MSSA for four years before and after the pandemic onset.