Suicide risk among residents and PhD students: A systematic review of the literature

Residents and PhD students (any discipline) are susceptible to various mental health issues, including suicidal thoughts and behaviors. This systematic review aimed to (1) estimate the prevalence of suicide-related outcomes among residents/PhD students and (2) assess the associated variables. PubMed, PsycINFO, and Scopus databases were searched for articles documenting quantitative information about suicide-related outcomes among residents and PhD students from inception until April 30, 2023. Sixty studies were included. Estimates of the current prevalence of the following suicide-related outcomes were: death wishes (DW), 9.1%; suicidal ideation (SI), 8.6%; suicidal planning (SP), 3.2%; non-suicidal self-injury (NSSI), 1.9%; suicide attempt(s) (SA), .8%. Additionally, estimates of the lifetime prevalence were: lifetime SI (L-SI), 25.9%; lifetime SP (L-SP), 10.0%; lifetime SA (L-SA), 3.1%. Depression, burnout, hopelessness, loneliness, low quality of the relationship with the supervisor and experiencing workplace mistreatment frequently co-occurred with the assessed outcomes. Many outcomes (DW, SI, SP, L-SI, L-SP, L-SA) had a higher prevalence compared to the general population, while some (SI, NSSI, SA) were lower compared to undergraduates. Interventions for individuals at risk in this population are vital together with the modification of the work environment and the promotion of a supportive academic and professional culture to reduce suicide risk.