Table 1.
Baseline Characteristics of Children
| Characteristic | Study Group |
|
|---|---|---|
| Annual Treatment (n = 1173) |
Repeated Treatment (n = 1173) | |
| Male sex | 52.7 (618/1173) | 52.3 (614/1173) |
| Age, y, mean ± SD | 10.5 ± 2.5 | 10.4 ± 2.5 |
| Body temperature, °C, mean ± SD | 36.6 ± 0.7 | 36.5 ± 1.1 |
| z score less than −2 SD below median reference value | ||
| Weight for age | 2.9 (34/1173) | 3.2 (37/1173) |
| Height for age | 25.8 (303/1173) | 24.7 (290/1173) |
| Body mass index for age | 10.8 (127/1173) | 10.1 (118/1173) |
| Malaria parasitemiaa | 48.4 (546/1129) | 48.3 (549/1136) |
| Parasitemia level, parasites/µL, mean (95% CI) | 1626 (1104–2393) | 2143 (1571–2925) |
| STH prevalence | ||
| Hookworm | 38.3 (449/1173) | 38.1 (443/1173) |
| A. lumbricoides | 35.0 (411/1173) | 36.6 (429/1173) |
| T. trichiura | 1.0 (12/1173) | 0.6 (7/1173) |
| Any STH infection | 64.2 (753/1173) | 64.1 (752/1173) |
| STH intensity, eggs/g of feces, mean (95% CI) | ||
| Hookworm | 68 (44–106) | 119 (75–191) |
| A. lumbricoides | 1979 (1509–2596) | 1693 (1263–2269) |
| Coinfection | ||
| Hookworm and A. lumbricoides | 10.0 (117/1173) | 11.3 (131/1173) |
| Hookworm and P. falciparum | 21.3 (239/1129) | 20.1 (227/1136) |
| A. lumbricoides and P. falciparum | 18.1 (204/1129) | 18.1 (204/1136) |
| Hemoglobin level, g/dL, mean (standard error) | 12.3 ± 1.3 | 12.3 ± 1.4 |
| Anemia | 36.8 (402/1093) | 39.2 (432/1103) |
| Slept under bed net previous night | 49.0 (854/1100) | 51.0 (888/1113) |
| Education level of household head | ||
| None or incomplete primary | 49.6 (623/1090) | 50.1 (632/1095) |
| Above primary school | 50.2 (467/1090) | 49.8 (463/1095) |
Data are % (proportion) of children, unless otherwise indicated.
Abbreviations: A. lumbricoides, Ascaris lumbricoides; CI, confidence interval; P. falciparum, Plasmodium falciparum; SD, standard deviation; STH, soil-transmitted helminth; T. trichiura, Trichuris trichiura.
a Determined by microscopy.