Table 1.
Study characteristics
| Authors, year | Country | Design | Participants characteristics/Sample size | Setting | Trainer | Methodological quality |
|---|---|---|---|---|---|---|
| Mohammadzadeh et al., 2019 (29) | Malaysia | RCT | 271 male and female adolescents (13 years old– 18 years old) | Orphanages | Researcher | High (85%) |
| Lee et al., 2020 (38) | Taiwan | RCT | 2,522 students with age 10-year-old to 12-year-old | School | Teacher | Moderate (62%) |
| Jamali et al., 2016 (39) | Iran | Experimental (pre-post-tests) and control group | 100 students, aged 13 years old –14 years old | School | Qualified trainers | Moderate (69%) |
| Yankey and Urmi, 2012 (42) | India | A quasi-experimental study | 600 Tibetan adolescents aged 13 years old– 19 years old | School | Researcher | High (100%) |
| McMullen and McMullen, 2018 (44) | Uganda | Experimental study (pre-post-tests) and control group | 620 students aged 13 years old –18 years old at the baseline and 170 students at post-intervention ‘at 1 year’ were participated | School | Teachers | High (88%) |
| Roy et al., 2016 (43) | India | Intervention study (pre-post-follow up) | 42 adolescent boys, mean age (SD) 14.38 (1.05) years old | School | Researcher | Moderate (66%) |
| Ndetei et al., 2019 (45) | Kenya | Intervention (pre-post-follow up) | 2,273 students at baseline, and only 1,075 complete the questionnaire for 9 months. Age from 11 years old to 18 years old | School | Trained teachers | Moderate (77%) |
| Mohammadi and Poursaberi, 2018 (40) | Iran | A quasi-experimental study | 120 Iranian adolescent cancer patients, aged 9 years old–18 years old | Hospital | Clinical psychologist | Moderate (77%) |
| Eslami et al., 2016 (41) | Iran | A quasi-experimental study | 126 female students, the mean age group was 16 years old | School | Researcher | High (100%) |
| McMahon and Stephanie, 2020 (46) | Australia | Experimental (pre-post-tests) and control group | 40 students aged from 16 years old to 17 years old | School | Teacher | High (88%) |