Table 1. Characteristics of 3,705 school-age children by ivermectin treatment group.
| No Treatment | Ivermectin | Total* | p value | |
| 1953 | 1752 | 3705 | ||
| Demographic characteristics | ||||
| Age, years | ||||
| 6–7 | 300 (15.4) | 263 (15.0) | 563 (15.2) | |
| 8–9 | 473 (24.2) | 415 (23.7) | 888 (23.9) | |
| 10–11 | 448 (22.9) | 404 (23.0) | 852 (23.0) | |
| 12–13 | 453 (23.2) | 376 (21.5) | 829 (22.4) | |
| 14–16 | 279 (14.3) | 294 (16.8) | 573 (15.5) | 0.655 |
| Sex, % | ||||
| Girl | 983 (50.3) | 827 (47.2) | 1810 (48.9) | |
| Boy | 970 (49.7) | 925 (52.8) | 1895 (51.1) | 0.075 |
| Socioeconomic characteristics | ||||
| Maternal educational level, % | ||||
| Secondary completed | 156 (8.3) | 132 (7.6) | 288 (8.0) | |
| Primary completed | 753 (40.1) | 483 (28.0) | 1236 (34.3) | |
| Illiterate or incomplete primary | 970 (51.6) | 1111 (64.4) | 2081 (57.7) | 0.087 |
| Household income, % | ||||
| >150 per month | 499 (25.7) | 175 (10.2) | 674 (18.5) | |
| ≤150 per month | 1441 (74.3) | 1537 (89.8) | 2978 (81.5) | <0.001 |
| Electric appliances in house,% | ||||
| 3–4 | 668 (34.2) | 350 (20.0) | 1018 (27.4) | |
| 1–2 | 1066 (54.6) | 963 (55.0) | 2029 (54.8) | |
| None | 219 (11.2) | 439 (25.0) | 658 (17.8) | <0.001 |
| Environmental characteristics | ||||
| Crowding (people per sleeping room), % | ||||
| ≤2 | 512 (26.2) | 568 (32.4) | 1080 (29.2) | |
| >2 | 1439 (73.8) | 1183 (67.6) | 2622 (70.8) | 0.130 |
| Bathroom, % | ||||
| Toilet or latrine | 1081 (55.3) | 1214 (69.4) | 2295 (62.0) | |
| Open ground | 872 (44.7) | 536 (30.6) | 1408 (38.0) | 0.118 |
| Drinking water,% | ||||
| Well | 305 (15.6) | 30 (1.7) | 335 (9.0) | |
| Piped | 594 (30.4) | 15 (0.9) | 609 (16.4) | |
| River or stream | 1054 (54.0) | 1707 (97.4) | 2761 (74.6) | <0.001 |
| Treatment | ||||
| Recent anthelmintic treatment, %** | ||||
| Yes | 1504 (78.0) | 1249 (77.5) | 2753 (77.8) | |
| No | 279 (14.5) | 208 (12.9) | 487 (13.8) | |
| Don't know | 145 (7.5) | 155 (9.6) | 300 (8.4) | 0.719 |
Brackets show percentages.
*: There are missing values for maternal education level (100), household income (37), crowding (3) and bathroom (2).
**: Anthelmintic treatment within the previous 6 months.