Table 1.
Baseline demographic and household characteristics of study participants
| Control (N = 1,095), 95% CI† | Intervention (N = 1,084), 95% CI | P value | |
|---|---|---|---|
| Individual characteristics | |||
| Age | 10.61 (10.56 to 10.66) | 10.56 (10.50 to 10.61) | 0.391 |
| Female (%) | 43.38 (40.44 to 46.32) | 48.99 (46.00 to 51.97) | 0.044* |
| Boarding at school (%) | 27.38 (24.74 to 30.02) | 24.84 (22.26 to 27.41) | 0.680 |
| Dong ethnic minority (%) | 47.03 (44.07 to 49.99) | 43.54 (40.59 to 46.50) | 0.675 |
| Miao ethnic minority (%) | 36.07 (33.22 to 38.92) | 37.73 (34.84 to 40.62) | 0.830 |
| Shui ethnic minority (%) | 2.92 (1.92 to 3.92) | 4.43 (3.20 to 5.65) | 0.597 |
| Household characteristics | |||
| Number of siblings | 1.13 (1.07 to 1.18) | 1.24 (1.18 to 1.29) | 0.129 |
| Pieces of durable assets | 8.45 (8.27 to 8.63) | 8.30 (8.11 to 8.50) | 0.581 |
| Parents are migrant workers (%) | 31.6 (28.85 to 34.34) | 28.53 (25.84 to 31.22) | 0.340 |
| Mother attended secondary school (%) | 7.28 (5.75 to 8.82) | 6.74 (5.25 to 8.24) | 0.690 |
| Father attended secondary school (%) | 12.26 (10.32 to 14.19) | 10.99 (9.13 to 12.85) | 0.428 |
| Sanitation and hygiene | |||
| Washes hands before eating (%) | 84.63 (82.49 to 86.77) | 84.24 (82.08 to 86.41) | 0.854 |
| Washes hands after using toilet (%) | 87.75 (85.81 to 89.68) | 85.74 (83.66 to 87.83) | 0.318 |
| Drinks boiled water only (%) | 5.21 (3.89 to 6.52) | 8.39 (6.74 to 10.05) | 0.013* |
| Wears shoes while playing outside (%) | 32.33 (29.55 to 35.10) | 33.30 (30.49 to 36.11) | 0.771 |
| House has dirt floor (%) | 17.08 (14.85 to 19.31) | 14.30 (12.21 to 16.39) | 0.303 |
| House has dirt-based latrine (%) | 19.58 (17.23 to 21.93) | 23.38 (20.86 to 25.90) | 0.160 |
| Family uses feces as fertilizer (%) | 65.48 (62.66 to 68.30) | 62.08 (59.19 to 64.98) | 0.270 |
| Infection prevalence | |||
| Any STH infection (%) | 41.10 (38.18 to 44.01) | 42.62 (39.67 to 45.57) | 0.779 |
| Ascaris infection (%) | 30.50 (27.77 to 33.23) | 31.09 (28.33 to 33.85) | 0.891 |
| Trichuris infection (%) | 23.29 (20.78 to 25.80) | 24.35 (21.80 to 26.91) | 0.847 |
| Hookworm infection (%) | 1.00 (0.41 to 1.60) | 0.74 (0.23 to 1.25) | 0.568 |
| Ascaris and Trichuris coinfection (%) | 12.97 (10.98 to 14.96) | 12.92 (10.92 to 14.91) | 0.989 |
| Infection intensity (among samples with positive infection) | |||
| Ascaris infection (epg) | 728.32 (526.90 to 929.75) | 1,065.04 (741.17 to 1,388.92) | 0.151 |
| Trichuris infection (epg) | 55.90 (38.29 to 73.50) | 71.79 (48.01 to 95.58) | 0.562 |
| Hookworm infection (epg) | 17.33 (−16.83 to 51.50) | 18.00 (−70.94 to 106.94) | 0.967 |
CI = confidence interval; STH = soil-transmitted helminth.
*
Bolded values indicate significance at 95% CI.
†
CI denotes confidence interval. P values adjusted for clustering at the township level.