Table 2.
Multivariate analyses offamily and infant characteristics associated with earlier core and non-core food introduction1 (N = 1861)
| Core food introduction | Non-core food introduction | |||
|---|---|---|---|---|
| Adj OR | 95% CI (p value) | Adj OR | 95% CI (p value) | |
| Family characteristics | ||||
| Maternal age, yrs. | 0.93 | 0.91 – 0.95 (<0.001) | 0.94 | 0.93 – 0.96 (<0.001) |
| Maternal education level | ||||
| High | 1 | – | 1 | – |
| Intermediate | 1.26 | 1.03 – 1.54 (0.024) | 1.27 | 1.04 – 1.56 (0.020) |
| Low | 1.49 | 1.17 – 1.90 (0.001) | 1.34 | 1.04 – 1.71 (0.022) |
| Maternal BMI (per unit increase) |
1.05 | 1.03 – 1.07 (<0.001) | 1.04 | 1.02 – 1.06 (<0.001) |
| Breastfeeding | ||||
| At least 3 months | 1 | – | 1 | – |
| Never or stopped before 3 months |
1.48 | 1.21 – 1.80 (<0.001) | 1.13 | 0.93 – 1.38 (0.206) |
| Number of older children | ||||
| 0 | 1 | – | 1 | – |
| 1 or more | 1.11 | 0.93 – 1.33 (0.228) | 1.35 | 1.13 – 1.61 (0.001) |
| Infant characteristics | ||||
| Gender | ||||
| Female | 1 | – | ||
| Male | 1.26 | 1.06 – 1.50 (0.008) | 1.11 | 0.93 – 1.32 (0.230) |
| Birth weight SDS | 1.13 | 1.03 – 1.24 (0.009) | 0.95 | 0.87 – 1.04 (0.298) |
| Appetite rating | 1.09 | 1.01 – 1.18 (0.024) | 1.03 | 0.96 – 1.11 (0.424) |
1
For the purposes of analyses, timing of core food introduction was coded as: 1 = later (6 – 12 months), 2 = average (5 months), and 3 = earlier (1 – 4 months). Timing of non-core food introduction was coded as: 1 = later (11 – 18 months), 2 = average (9 – 10 months), and 3 = earlier (3 – 8 months)
Adj OR = odds ratio adjusted for all listed variables; 95% CI = 95% confidence interval; 1 denotes the reference group; BMI = body mass index; Birth weight SDS = Weight standard deviation scores at birth calculated using 1990 UK weight reference data 43