Choi 2020 [30] adjusted for interview year; Stein 2010 [81] adjusted for person-year, country, demographic factors (age, sex, time-varying education, time-varying marriage), interactions between life course and demographic variables, parent psychopathology, and childhood adversities; Amin 2021 [20] adjusted for socio-demographic, labour market marginalisation and morbidity factors (i.e. sex, age, educational level, family situation and type of residential area, days with full-time unemployment, net days with sickness absence, granted disability pension, history of suicide attempt; history of inpatient or specialised outpatient healthcare); Sohn 2019 [77] age- and gender-matched; Marroquin-Rivera 2020 [54] unadjusted.