Table 3.
Adjusteda difference in mean PSAI scores for boys and girls from complete case analysis.
| β-Coefficient (95% CI) | ||||
|---|---|---|---|---|
| Covariate | Boys (n = 3,010) | Girls (n = 2,823) | ||
| Infant feeding method | ||||
| Early formula | 0 | 0 | ||
| Early soy | 1.18 (–0.73, 3.09) | 2.66 (0.19, 5.12) | ||
| Late soy | –0.53 (–1.98, 0.91) | –0.03 (–1.78, 1.71) | ||
| Primarily breast-fed | –0.80 (–1.57, –0.03) | –0.26 (–1.10, 0.58) | ||
| Presence of older brother | ||||
| No | 0 | 0 | ||
| Yes (≥ 1) | 2.06 (1.39, 2.73) | 3.24 (2.48, 4.00) | ||
| Presence of older sister | ||||
| No | 0 | 0 | ||
| Yes (≥ 1) | –2.75 (–3.42, –2.08) | –1.89 (–2.65, –1.13) | ||
| Regular child care attendance | ||||
| No | 0 | 0 | ||
| Yes | 0.32 (–0.31, 0.96) | 0.41 (–0.29, 1.10) | ||
| Prenatal smoking | ||||
| No | 0 | 0 | ||
| Yes | 1.42 (0.57, 2.27) | 2.08 (1.11, 3.05) | ||
| Maternal education | ||||
| University degree | 0 | 0 | ||
| Advanced level | 1.29 (0.31, 2.27) | –1.31 (–2.37, –0.24) | ||
| Ordinary level | 2.01 (1.05, 2.97) | –2.59 (–3.65, –1.53) | ||
| Vocational | 1.71 (0.41, 3.00) | –2.74 (–4.17, –1.30) | ||
| CSE/none | 2.48 (1.22, 3.74) | –2.21 (–3.61, –0.81) | ||
| Age at PSAI assessment | 0.13 (–0.27, 0.53) | –0.64 (–1.10, –0.18) | ||
| Maternal age | 0.06 (–0.01, 0.13) | 0.10 (0.01, 0.18) | ||
| Maternal interaction score | 0.03 (–0.03, 0.10) | 0.02 (–0.06, 0.09) | ||
| Partner interaction score | 0.01 (–0.03, 0.05) | 0.03 (–0.02, 0.07) | ||
| aAdjusted model includes all variables shown here. | ||||