Table 4.
Mode of delivery and body mass index at age five years.
| BMI category (normal BMI – base outcome) | Cases n (%) | RRR (95% CI) | p-value | AdjRRR (95% CI)** | p-value |
|---|---|---|---|---|---|
| Thin | |||||
| Normal vaginal delivery | 318 (3.6) | reference | reference | ||
| Assisted vaginal delivery | 78 (0.9) | 0.99 (0.77–1.28) | 0.954 | 0.95 (0.73–1.24) | 0.697 |
| Elective Caesarean | 55 (0.6) | 0.80 (0.60–1.08) | 0.14 | 0.78 (0.57–1.06) | 0.115 |
| Emergency Caesarean | 83 (0.9) | 1.24 (0.96–1.60) | 0.093 | 1.18 (0.90–1.54) | 0.238 |
| Overweight | |||||
| Normal vaginal delivery | 798 (9.0) | reference | reference | ||
| Assisted vaginal delivery | 215 (2.4) | 1.09 (0.92–1.29) | 0.31 | 1.15 (0.97–1.37) | 0.114 |
| Elective Caesarean | 187 (2.1) | 1.08 (0.91–1.29) | 0.366 | 1.13 (0.94–1.35) | 0.19 |
| Emergency Caesarean | 189 (2.1) | 1.13 (0.95–1.34) | 0.181 | 1.18 (0.99–1.42) | 0.066 |
| Obese | |||||
| Normal vaginal delivery | 252 (2.9) | reference | reference | ||
| Assisted vaginal delivery | 48 (0.5) | 0.77 (0.56–1.06) | 0.107 | 0.84 (0.60–1.16) | 0.279 |
| Elective Caesarean | 65 (0.7) | 1.19 (0.90–1.58) | 0.219 | 1.30 (0.98–1.73) | 0.072 |
| Emergency Caesarean | 72 (0.8) | 1.36 (1.04–1.79) | 0.027 | 1.46 (1.10–1.93) | 0.009 |
N for adjusted model = 8819. Multinomial logistic regression. BMI – Body mass index, RRR (Relative Risk Ratio), CI (Confidence intervals), Adj (Adjusted).
**Adjusted for maternal age, education, ethnicity, marital status, region, infant sex, gestational age, pre-eclampsia, gestational diabetes, parity.