Table 1.
Baseline characteristics of study participants and distribution by ecological zones
| Zone 1 | Zone 2 | Zone 3 | Zone 4 | Total | |
|---|---|---|---|---|---|
| Participants | n = 654 (%) | n = 656 (%) | n = 181 (%) | n = 284 (%) | n = 1775(%) |
| Urban site 1 | Abri: 252 (39) | Port Sudan: 292 (45) | Omdurman: 23 (13) | Kosti: 106 (37) | Urban: 1496 (84) Rural: 279 (16) |
| Rural site 1 | Amara: 79 (12) | Hoshiri: 39 (6) | Elsalamania: 43 (24) | Umahani: 15 (5) | |
| Urban site 2 | Barbar: 300 (46) | Tokkar: 309 (47) | Shendi: 85 (47) | Adamazin: 129 (46) | |
| Rural site 2 | Elferakha: 23 (3) | Ashad: 16 (2) | Dimelgarri: 30 (16) | Agadi: 34 (12) | |
| Sex | |||||
| Male | 247 (38) | 354 (54) | 84 (46) | 142 (50) | 826 (47) |
| Female | 407 (62) | 302 (46) | 97 (54) | 142 (50) | 949 (53) |
| Age group (years) | |||||
| < 15 | 41 (6) | 33 (5) | 18 (10) | 80 (28) | 172 (10) |
| 15–39 | 361 (55) | 323 (49) | 90 (50) | 133 (47) | 907 (51) |
| 40–65 | 243 (37) | 259 (40) | 61 (34) | 61 (23) | 656 (53) |
| > 65 | 9 (2) | 41 (6) | 12 (6) | 3 (2) | 6 (4) |