Table 1. Number of cases according to age and sex (n=4,062).
| Study group age | Age (mo) | Sex | Total | |
|---|---|---|---|---|
| Male | Female | |||
| 1st (4–6 mo) | 4–5 | 374 (49.7) | 379 (50.3) | 753 |
| 6–7 | 1 (100) | 0 (0) | 1 | |
| Total | 375 (49.7) | 379 (50.3) | 754 | |
| 2nd (9–12 mo) | 8–9 | 51 (54.3) | 43 (45.7) | 94 |
| 10–11 | 219 (55.3) | 178 (44.7) | 397 | |
| 12–13 | 185 (52.6) | 167 (47.4) | 352 | |
| 14–15 | 4 (80.0) | 1 (20.0) | 5 | |
| Total | 460 (54.2) | 389 (45.8) | 848 | |
| 3rd (18–24 mo) | 18–19 | 123 (52.1) | 113 (47.9) | 236 |
| 20–21 | 114 (50.7) | 111 (49.3) | 225 | |
| 22–23 | 144 (50.9) | 139 (49.1) | 283 | |
| 24–26 | 95 (51.4) | 90 (48.6) | 185 | |
| Total | 476 (51.2) | 453 (48.8) | 929 | |
| 4th (30–36 mo) | 30–32 | 113 (48.9) | 118 (51.1) | 231 |
| 33–35 | 145 (54.9) | 119 (45.1) | 264 | |
| 36–41 | 76 (52.4) | 69 (47.6) | 145 | |
| Total | 334 (52.2) | 306 (47.8) | 640 | |
| 5th (42–48 mo) | 42–47 | 164 (48.2) | 176 (51.8) | 340 |
| 48–53 | 49 (51.0) | 47 (49.0) | 96 | |
| Total | 213 (48.9) | 223 (51.1) | 436 | |
| 6th (54–60 mo) | 54–59 | 116 (52.3) | 106 (47.7) | 222 |
| 60–65 | 28 (49.1) | 29 (50.9) | 57 | |
| Total | 144 (51.6) | 135 (48.4) | 279 | |
| 7th (66–71 mo) | 66–71 | 79 (45.1) | 96 (54.9) | 175 |
| Total | 2,081 (51.2) | 1,981 (48.8) | 4,062 | |
Values are presented as number of cases (%).