An electronic data sheet was developed and used for data extraction. Two authors (ND and JP) extracted data independently. The between authors disagreements were resolved through discussion among the authors until consensus was reached, otherwise a senior author arbitrated. The following data were collected: first author’s name, year of publication, country, mean age, gender, type of population (general or conscripts/veterans), study design (cohort, case-control, cross-sectional), suicide (ideation, attempt, completed), sample size, effect estimate with associated 95% confidence interval (CI).
