| Authors | Country | year | Size of sample | Prevalence of depression |
| Our trial | Tunisia | 2021 | 43 | 86% |
| Battcharya K [23] | India | 2016 | 58 | 78.3% |
| AL-Maliki SK [22] | Iraq | 2016 | 336 | 70.5% |
| Rodriguez EM [26] | USA | 2016 | 100 | 38% |
| K. Dietrich [24] | Allemagne | 2016 | 213 | 42% |
| Kostak MA [25] | Turquie | 2013 | 44 | 36% |