Bivariate and multivariable analyses of the associations between STH infection and malnutrition* among schoolchildren in Ecuador, 2011–2012
| STH infection | Total | Malnutrition | OR (95% CI) | OR (95% CI)† | P values |
| n=920 | n (%) | Crude | Adjusted | ||
| Prevalence of infection | |||||
| Any helminth | |||||
| Negative | 663 | 78 (11.8) | 1.0 | 1.0 | |
| Positive | 257 | 53 (20.6) | 1.94 (1.33 to 2.86) | 1.38 (0.88 to 2.14) | 0.157 |
| Ascaris lumbricoides | |||||
| Negative | 750 | 94 (12.5) | 1.0 | 1.0 | |
| Positive | 170 | 37 (21.8) | 1.94 (1.27 to 2.97) | 1.37 (0.86 to 2.20) | 0.190 |
| Trichuris trichiura | |||||
| Negative | 742 | 93 (12.5) | 1.0 | 1.0 | |
| Positive | 178 | 38 (21.4) | 1.89 (1.25 to 2.88) | 1.29 (0.79 to 2.10) | 0.306 |
| Hookworms | |||||
| Negative | 874 | 120 (13.7) | 1.0 | 1.0 | |
| Positive | 46 | 11 (23.9) | 1.97 (0.98 to 3.99) | 1.72 (0.84 to 3.51) | 0.135 |
| Intensity of infection | |||||
| A. lumbricoides | |||||
| None | 750 | 94 (12.5) | 1.0 | 1.0 | |
| Light | 79 | 13 (16.5) | 1.37 (0.73 to 2.59) | 1.04 (0.54 to 2.02) | 0.896 |
| Moderate/heavy | 91 | 24 (26.4) | 2.50 (1.49 to 4.18) | 1.85 (1.04 to 3.31) | 0.037 |
| T. trichiura | |||||
| None | 742 | 93 (12.5) | 1.0 | 1.0 | |
| Light | 148 | 29 (19.6) | 1.70 (1.07 to 2.69) | 1.19 (0.71 to 2.01) | 0.506 |
| Moderate/heavy | 30 | 9 (30.0) | 2.99 (1.33 to 6.73) | 1.87 (0.76 to 4.60) | 0.173 |
| Hookworms | |||||
| None | 874 | 120 (13.7) | 1.0 | 1.0 | |
| Light | 42 | 9 (21.4%) | 1.71 (0.80 to 3.67) | 0.76 (0.32 to 1.79) | 0.526 |
| Moderate/heavy | 4 | 2 (66.7%) | 6.28 (0.88 to 45.03) | 2.58 (0.33 to 20.18) | 0.366 |
*Any of thinness/wasting or stunting.
†OR adjusted by sex, age, sewage, drinking water, anthelmintic treatment and clustering by school.
STH, soil-transmitted helminth.