Table 3.
Stratified odds ratios (OR) of GDM by parity and test of interactions between fetal biometry at 22–24 weeks gestation and parity.
| Fetal Growth at 22–24 Weeks Gestation | Adjusted OR † |
p-Value of Interaction Term |
|
|---|---|---|---|
| Nulliparous | Parous | ||
| AC < 10th percentile | 0.99 (0.87, 1.13) | 1.03 (0.85, 1.26) | 0.74 |
| HC < 10th percentile | 1.10 (1.00, 1.21) | 1.28 (1.10, 1.48) * | 0.11 |
| FL < 10th percentile | 1.12 (1.02, 1.24) * | 1.34 (1.15, 1.55) * | 0.08 |
| EFW < 10th percentile | 1.09 (0.97, 1.22) | 1.26 (1.06, 1.49) * | 0.20 |
| AC > 90th percentile | 0.99 (0.91, 1.09) | 0.96 (0.85, 1.09) | 0.71 |
| HC > 90th percentile | 0.96 (0.87, 1.07) | 0.98 (0.86, 1.13) | 0.85 |
| FL > 90th percentile | 1.09 (0.97, 1.23) | 0.87 (0.73, 1.03) | 0.04 * |
| EFW > 90th percentile | 1.03 (0.95, 1.12) | 0.95 (0.85, 1.06) | 0.27 |
* p < 0.05, † Adjusted for maternal age, fetal sex, pre-pregnancy height and pre-pregnancy BMI. OR = odds ratio; AC = abdominal circumference; HC = head circumference; FL = femur length; EFW = estimated fetal weight.