Table 6. Univariable and multivariable linear regression results for the effect of cumulative Ascaris infection, cumulative Trichuris infection, and cumulative any STH infection on verbal scores in preschool children in Iquitos, Peru, September 2011 to July 2016.
| Univariable | Multivariable with multiple imputation b | |
|---|---|---|
| β (95% CI) | β (95% CI) | |
| # times found infected with Ascaris: | ||
| 0 | REF a | REF |
| 1 | -2.03 (-3.10, -0.96) a | -0.92 (-1.88, 0.03) |
| 2–3 | -2.10 (-3.43, -0.77) a | -0.20 (-1.40, 1.00) |
| Mother completed secondary school | 4.77 (3.81, 5.73) | 2.92 (1.98, 3.85) |
| Cooks using gas | 3.69 (2.69, 4.68) | 1.61 (0.65, 2.57) |
| Toilet with water and connection to public sewage in the home | 3.74 (2.82, 4.67) | 1.64 (0.73, 2.55) |
| Stunting at 1 year | -3.71 (-4.80, -2.63) | -2.31 (-3.30, -1.32) |
| Bayley-IIIc: cognition raw score at 1 year | 0.16 (0.11, 0.20) | 0.09 (0.05, 0.14) |
| # healthy growth visits from birth to 1 year of age | 0.48 (0.35, 0.61) | 0.27 (0.15, 0.39) |
| Age | -4.28 (-4.55, -4.01) | -4.25 (-4.52, -3.98) |
| # times found infected with Trichuris: | ||
| 0 | REF a | REF |
| 1 | -2.07 (-3.24, -0.90) a | -0.64 (-1.69, 0.41) |
| 2–3 | -2.77 (-4.81, -0.72) a | -0.24 (-2.09, 1.60) |
| Mother completed secondary school | 4.77 (3.81, 5.73) | 2.87 (1.93, 3.82) |
| Cooks using gas | 3.69 (2.69, 4.68) | 1.61 (0.64, 2.57) |
| Toilet with water and connection to public sewage in the home | 3.74 (2.82, 4.67) | 1.66 (0.74, 2.58) |
| Stunting at 1 year | -3.71 (-4.80, -2.63) | -2.28 (-3.28, -1.28) |
| Bayley-IIIc: cognition raw score at 1 year | 0.16 (0.11, 0.20) | 0.10 (0.05, 0.14) |
| # healthy growth visits from birth to 1 year of age | 0.48 (0.35, 0.61) | 0.27 (0.15, 0.39) |
| Age | -4.28 (-4.55, -4.01) | -4.25 (-4.52, -3.97) |
| # times found infected with any STH: | ||
| 0 | REF a | REF |
| 1 | -2.24 (-3.31, -1.17) a | -0.95 (-1.91, 0.01) |
| 2–3 | -2.88 (-4.10, -1.66) a | -0.75 (-1.87, 0.37) |
| Mother completed secondary school | 4.77 (3.81, 5.73) | 2.89 (1.95, 3.84) |
| Cooks using gas | 3.69 (2.69, 4.68) | 1.63 (0.67, 2.60) |
| Toilet with water and connection to public sewage in the home | 3.74 (2.82, 4.67) | 1.58 (0.67, 2.50) |
| Stunting at 1 year | -3.71 (-4.80, -2.63) | -2.29 (-3.28, -1.29) |
| Bayley-IIIc: cognition raw score at 1 year | 0.16 (0.11, 0.20) | 0.09 (0.05, 0.14) |
| # healthy growth visits from birth to 1 year of age | 0.48 (0.35, 0.61) | 0.27 (0.15, 0.39) |
| Age | -4.28 (-4.55, -4.01) | -4.25 (-4.52, -3.97) |
a 872 participants included in the analysis (number of times found infected with any STH infection and species-specific infections were missing for 8 participants)
b 880 participants were included in the analyses (complete data available for 754 participants; number of times found infected with any STH infection and species-specific infections was imputed for 8 participants; and verbal score was imputed for 4, 2, 63 and 99 participants at the 2, 3, 4 and 5-year visit, respectively)
c Bayley III: Bayley Scales of Infant and Toddler Development, Third Edition