Table 4.
Odds ratios and adjusted odds ratios of asthma, rhinoconjunctivitis and eczema symptoms for birthweight, gestational age, and light-for-dates of the participating children.
| Characteristics | N | Cases | % | Asthma symptoms crude OR (95% CI) | Asthma symptoms adjusted ORa (95% CI) | Cases | % | Rhinoconjuncti-vitis symptoms crude OR (95% CI) | Rhinoconjuncti-vitis symptoms adjusted ORa (95% CI) | Cases | % | Eczema symptoms crude OR (95% CI) | Eczema symptoms adjusted ORa (95% CI) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Birthweight | |||||||||||||
| <2500 g | 27 | 3 | 11.1 | 2.41 (0.70–8.23) | 2.93 (0.83–10.40) | 4 | 14.8 | 1.35 (0.46–3.97) | 1.56 (0.52–4.69) | 6 | 22.2 | 4.25 (1.67–10.85) | 5.13 (1.93–13.62) |
| <= 2500 g | 1175 | 58 | 4.9 | 1.00 | 1.00 | 134 | 11.4 | 1.00 | 1.00 | 74 | 6.3 | 1.00 | 1.00 |
| Birthweight | |||||||||||||
| <2500 g | 27 | 3 | 11.1 | 2.42 (0.71–8.29) | 2.95 (0.83–10.46) | 4 | 14.8 | 1.33 (0.45–3.90) | 1.55 (0.51–4.64) | 6 | 22.2 | 4.44 (1.74–11.36) | 5.31 (2.00–14.12) |
| 2500–4000 g | 1141 | 56 | 4.8 | 1.00 | 1.00 | 132 | 11.6 | 1.00 | 1.00 | 69 | 6.1 | 1.00 | 1.00 |
| >4000 g | 34 | 2 | 5.8 | 1.21 (0.28–5.18) | 1.24 (0.28–5.38) | 2 | 5.9 | 0.48 (0.11–2.02) | 0.50 (0.11–2.15) | 5 | 14.7 | 2.68 (1.01–7.14) | 2.54 (0.92–6.98) |
| Gestational age | |||||||||||||
| <37 weeks (preterm) | 36 | 2 | 5.6 | 1.10 (0.26–4.70) | 1.14 (0.26–4.97) | 5 | 13.9 | 1.25 (0.48–3.28) | 1.45 (0.54–3.90) | 2 | 5.6 | 0.82 (0.19–3.48) | 0.84 (0.20–3.63) |
| >= 37 weeks | 1166 | 59 | 5.1 | 1.00 | 1.00 | 133 | 11.4 | 1.00 | 1.00 | 78 | 6.7 | 1.00 | 1.00 |
| Light-for-dates | |||||||||||||
| Light-for-dates | 129 | 6 | 3.9 | 0.73 (0.29–1.86) | 0.81 (0.31–2.08) | 10 | 7.8 | 0.62 (0.32–1.21) | 0.66 (0.33–1.30) | 9 | 7.0 | 1.06 (0.52–2.17) | 1.15 (0.55–2.40) |
| Appropriate/heavy-for-dates | 1073 | 56 | 5.2 | 1.00 | 1.00 | 128 | 11.9 | 1.00 | 1.00 | 71 | 6.6 | 1.00 | 1.00 |
| High catch-up in weight | |||||||||||||
| High catch-up | 120 | 7 | 5.8 | 1.18 (0.52–2.65) | 1.25 (0.55–2.84) | 15 | 12.5 | 1.11 (0.63–1.97) | 1.09 (0.61–1.96) | 7 | 6.8 | 0.86 (0.38–1.90) | 0.83 (0.37–1.87) |
| Non high catch-up | 1082 | 54 | 5.0 | 1.00 | 1.00 | 123 | 11.4 | 1.00 | 1.00 | 73 | 5.8 | 1.00 | 1.00 |
OR, odds ratio; 95% CI, 95% confidence interval. aA model incorporated sex, one of anthropometric characteristics (Birthweight < 2500 g/ >= 2500 g, birthweight < 2500 g/ 2500–4000 g/ > 4000 g, preterm born, light-for-dates, or high catch-up in weight), maternal and paternal asthma and allergic disease history, maternal educational level, number of siblings, living in urban area, and environmental tobacco smoke exposure.