Table 1.
Maternal Demographics
| Parameter (Units) | GDM by Carpenter-Coustan (n=338) | IADPSG (n=281) | Normal Glucose Tolerance (n=772) | Normal Glucose Screening (n=6,999) | Normal Glucose Tolerance and Normal Glucose Screening* (n=7,771) |
|---|---|---|---|---|---|
| Maternal age (y) | 28.98 | 28.54 | 27.54 | 24.69 | 25.0 |
| P | .949 | Reference | .138 | <.001 | <.001 |
| Maternal BMI (kg/m2) | 35.85 | 35.57 | 32.74 | 32.30 | 32.3 |
| P | .999 | Reference | <.001 | <.001 | <.001 |
| Nulliparous (%) | 38.5 | 35.9 | 38.0 | 48.3 | 47.3 |
| P | .519 | Reference | .551 | <.001 | <.001 |
| African American (%) | 32.8 | 30.2 | 28.8 | 47.5 | 45.6 |
| P | .49 | Reference | .637 | <.001 | <.001 |
| Caucasian (%) | 41.1 | 47.0 | 46.1 | 35.3 | 36.4 |
| P | .144 | Reference | .804 | <.001 | <.001 |
| Hispanic (%) | 15.7 | 16.0 | 17.1 | 13.5 | 13.9 |
| P | .91 | Reference | .677 | .228 | .305 |
GDM, gestational diabetes mellitus; IADPSG, The International Association of the Diabetes and Pregnancy Study Groups; BMI, body mass index.
*
Less than 135 mg/dL who did not have a 100-g oral glucose tolerance test.
Data are mean unless otherwise specified.
P values shown for continuous variables are post hoc analysis of variance with Tahmane method for multiple comparisons with IADPSG as reference (four-group analysis of variance was used for Carpenter-Coustan, IADPSG, normal glucose tolerance, and normal glucose screening columns, and a three-group analysis of variance was used for the normal glucose tolerance+normal glucose screening column).
P values for categorical variables are χ2.