| Characteristics | Value | Country | ||||
| Sudan n (%) | Saudi Arabia n (%) | Egypt n (%) | Jordan n (%) | All n (%) | ||
| Sex | Male | 78 (20.3) | 167 (43.4) | 198 (51.4) | 103 (26.8) | 546 (35.5) |
| Female | 304 (79.7) | 218 (56.6) | 183 (48.6) | 282 (73.2) | 994 (64.5) | |
| Age “Years” | Less than18 | 9 (2.3) | 17 (4.4) | 2 (0.5) | 43 (11.2) | 71 (4.6) |
| 18 - 21 | 145 (37.7) | 172 (44.7) | 204 (53.0) | 250 (64.9) | 771 (50.1) | |
| 22 - 25 | 207 (53.8) | 153 (39.7) | 174 (45.2) | 80 (20.8) | 614 (39.8) | |
| More than 25 | 24 (6.2) | 43 (11.2) | 5 (1.3) | 12 (3.1) | 84 (5.5) | |
| Educational level | 1st Year | 36 (9.4) | 49 (12.7) | 80 (20.8) | 61 (15.8) | 226 (14.7) |
| 2nd Year | 54 (14.0) | 61 (15.8) | 73 (19.0) | 157 (40.8) | 345 (22.4) | |
| 3rd Year | 53 (13.8) | 67 (17.4) | 51 (13.2) | 68 (17.7) | 239 (15.5) | |
| 4th Year | 72 (18.7) | 63 (16.4) | 46 (11.9) | 48 (12.5) | 229 (14.9) | |
| 5th Year | 79 (20.5) | 71 (18.4) | 67 (17.4) | 33 (8.6) | 250 (16.2) | |
| 6th year | 91 (23.6) | 74 (19.2) | 68 (17.7) | 18 (4.7) | 251 (16.3) | |