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