Variables being investigated | Study | Study design | Study setting and sample size |
Family support | Hussain et al. [34] | Questionnaire | Bangladesh; N = 120 |
Nsitou et al. | Questionnaire | Congo; N = 212 | |
Lubaki et al. [48] | Qualitative | Congo | |
Ali et al. [46] | MMAS 8 | Ethiopia; N = 121 | |
Olowookere [47] | Questionnaire | Nigeria; N = 420 | |
Depression | Boima et al. [26] | MMAS 8 | Ghana and Nigeria; N = 357 |
Use of social drugs | Khanam [29] | Questionnaire | Bangladesh; N = 29,960 |
| Ahmed et al. [48] | MMAS 8 | India; N = 334 |
Kamran et al. [50] | MMAS 4 | Iran; N = 671 | |
Bhandari et al. [33] . | MMAS 4 | Nepal; N = 154 |