Table 1 Participants’ characteristics by treatment group
| Variable | Group 1 | Group 2 | Group 3 | Group 4 | P value |
|---|---|---|---|---|---|
| Age (years) | 19.41 | 18.78 | 20.17 | 19.54 | P = 0.76 |
| Birthplace | P = 0.89 | ||||
| North | 5 (4.4) | 4 (8.8) | 4 (8.8) | 3 (6.7) | |
| South | 6 (13.3) | 9 (15.6) | 5 (11.1) | 8 (11.1) | |
| East | 7 (15.6) | 5 (11.1) | 8 (17.8) | 9 (20) | |
| West | 10 (22.2) | 11 (24.4) | 7 (15.6) | 12 (26.7) | |
| Central | 17 (44.4) | 16 (40) | 21 (46.7) | 13 (35.6) |