Table 3.
Unadjusted and adjusted odds ratio for early introduction of discretionary foods (<52-weeks).
| Characteristics | Unadjusted Odds Ratio a | Adjusted Odds Ratio b | ||||
|---|---|---|---|---|---|---|
| OR (95% CI) | p-Value | Overall p-Value | OR (95% CI) | p-Value | Overall p-Value | |
| Family Characteristics ** | ||||||
| Maternal Age | 0.94 (0.89–1.00) | 0.055 | 0.055 | Not retained in the final model | ||
| Maternal education | ||||||
| Left school before 12 | 1.00 | Not retained in the final model | ||||
| Completed school | 0.28 (0.03–2.61) | 0.270 | ||||
| College/TAFE | 0.12 (0.01–1.01) | 0.051 | <0.001 | |||
| University | 0.07 (0.01–0.58) | 0.013 | ||||
| Maternal marital status | ||||||
| Married | 1.00 | Not retained in the final model | ||||
| Living with partner | 1.39 (0.48–3.98) | 0.54 | 0.134 | |||
| Single | 4.68 (0.63–34.54) | 0.13 | ||||
| Maternal country of birth | ||||||
| Australia born | 1.00 | |||||
| Other English-speaking countries | 0.31 (0.11–0.85) | 0.023 | 0.098 | Not retained in the final model | ||
| Non-English-speaking countries | 0.68 (0.35–1.35) | 0.282 | ||||
| Partner country of birth | ||||||
| Australia born | 1.00 | |||||
| Other English-speaking countries | 0.20 (0.08–0.53) | 0.001 | 0.009 | 0.18 (0.07–0.49) | 0.001 | 0.002 |
| Non-English-speaking countries | 0.70 (0.33–1.47) | 0.351 | 0.42 (0.19–0.94) | 0.035 | ||
| Index for relative socioeconomic advantage and disadvantage | ||||||
| Least disadvantaged | 1.00 | |||||
| Low disadvantaged | 0.60 (0.28–1.31) | 0.207 | 0.60 (0.25–1.43) | 0.254 | ||
| Moderately disadvantaged | 0.58 (0.15–1.55) | 0.421 | 0.001 | 0.39 (0.09–1.55) | 0.183 | 0.004 |
| Highly disadvantaged | 2.19 (0.81–5.89) | 0.118 | 2.06 (0.71–5.92) | 0.179 | ||
| Most disadvantaged | 3.68 (1.29–10.50) | 0.015 | 3.72 (1.17–11.78) | 0.025 | ||
| Maternal alcohol consumption during pregnancy | ||||||
| No | 1.00 | Not retained in the final model | ||||
| Yes | 2.46 (0.58–10.3) | 0.218 | 0.159 | |||
| Parity | ||||||
| Primiparous | 1.00 | Not retained in the final model | ||||
| Multiparous | 1.68 (0.89–3.18) | 0.018 | 0.102 | |||
| Infant Characteristics ** | ||||||
| Infant gender | ||||||
| Male | 1.00 | Not retained in the final model | ||||
| Female | 1.96 (1.01–3.78) | 0.044 | 0.038 | |||
Note: Backward stepwise model with dichotomous outcome of (0: <52-weeks; 1: ≥52-weeks). a All the variables in the unadjusted model were variables which had a p-value of <0.25. ** maternal work status at 52 weeks, infant gestational age, birth-weight, method of delivery, mother’s smoking during pregnancy, infant feeding method at 4 weeks of age, had a p-value >0.25; therefore, were not included in the unadjusted model. b Adjusted for maternal age, education, marital status, country of birth, partners’ country of birth, alcohol consumption status of mother during pregnancy, infant gender and parity. OR: odds ratio, 95% CI: 95% confidence interval.