Table 7 Multivariate analysis of the effect of pre-pregnancy BMI and GWG on maternal and infant complications (All subjects adjusted for age, race, education level, family income)
| Â | Pre-pregnancy BMI category | Gestational weight gain category | |||
|---|---|---|---|---|---|
Underweight vs normal weight | Overweight vs normal weight | Obese vs normal weight | Inadequate vs adequate | Excessive v vs adequate | |
Gestational diabetes mellitus | |||||
 OR (95% CI) | 0.80 (0.55–1.18) | 2.01 (1.49–2.71) | 1.91 (0.94–3.91) | 1.60 (1.22–2.09) | 0.90 (0.68–1.18) |
P-value | 0.263 | <  0.001 | 0.075 | <  0.001 | 0.437 |
Gestational hypertension | |||||
 OR (95% CI) | 0.69 (0.27–1.78) | 2.80 (1.67–4.69) | 5.42 (2.26–13.03) | 0.71 (0.36–1.41) | 1.40 (0.85–2.29) |
P-value | 0.447 | <  0.001 | <  0.001 | 0.328 | 0.190 |
Low birth weight | |||||
 OR (95% CI) | 1.48 (0.89–2.47) | 1.00 (0.51–1.99) | 2.30 (0.68–7.8) | 1.66 (1.08–2.56) | 0.70 (0.41–1.17) |
P-value | 0.128 | 0.997 | 0.181 | 0.022 | 0.171 |
Macrosomia | |||||
 OR (95% CI) | 0.64 (0.37–1.09) | 1.92 (1.35–2.72) | 2.48 (1.16–5.29) | 0.75 (0.48–1.16) | 1.95 (1.43–2.67) |
P-value | 0.100 | <  0.001 | 0.019 | 0.190 | <  0.001 |
Small for GA | |||||
 OR (95% CI) | 1.20 (0.8–1.81) | 0.67 (0.37–1.21) | <  0.001 (<  0.001- > 999.9) | 1.22 (0.86–1.75) | 0.81 (0.55–1.18) |
P-value | 0.382 | 0.186 | 0.973 | 0.269 | 0.269 |
Large for GA | |||||
 OR (95% CI) | 0.67 (0.44–1.04) | 1.73 (1.28–2.33) | 1.64 (0.82–3.27) | 0.78 (0.55–1.11) | 1.89 (1.45–2.46) |
P-value | 0.073 | <  0.001 | 0.160 | 0.170 | <  0.001 |