Table 3. Association of reported high school BMI with lifetime nulliparity and nulligravidity, multivariable-adjusted odds ratios (95% confidence interval).
| Model Outcomea | < 18.5 kg/m2 underweight | 18.5-24.9 kg/m2 normal | 25.0-29.9 kg/m2 overweight | ≥ 30.0 kg/m2 obese |
|---|---|---|---|---|
| Nulliparity | ||||
| Unadjusted | 0.72 (0.55-0.96) | (reference) | 1.18 (0.86-1.63) | 2.23 (1.43-3.47) b |
| Fully adjusted | 0.71 (0.51-1.00) | (reference) | 1.22 (0.81-1.84) | 2.84 (1.59-5.10) b |
| Nulligravidity | ||||
| Unadjusted | 0.74 (0.52-1.04) | (reference) | 1.42 (0.98-2.04) | 3.16 (1.97-5.05) b |
| Fully adjusted | 0.77 (0.51-1.15) | (reference) | 1.51 (0.96-2.39) | 3.93 (2.12-7.26) b |
a
Logistic regression models adjusted for adult BMI, history of non-gestational amenorrhea, marital status, ethnicity, study site, education, and socioeconomic status
b
Denotes statistical significance