Table 1.
Maternal Baseline Characteristics
| Early Screen (n=112) | No Early Screen (n=457) | p | |
|---|---|---|---|
| Age (yrs) | 30.7 ± 5.4 | 29.7 ± 5.7 | 0.12 |
| Nulliparous | 21 (19%) | 105 (23%) | 0.33 |
| Race | 0.13 | ||
| Black | 50 (45%) | 237 (52%) | |
| White | 21 (19%) | 50 (11%) | |
| Hispanic | 35 (31%) | 132 (29%) | |
| Other | 1 (1%) | 10 (2%) | |
| Government Insurance | 74 (66%) | 359 (79%) | <0.01 |
| Unmarried | 64 (57%) | 276 (60%) | 0.24 |
| Tobacco Use | 25 (22%) | 86 (19%) | 0.56 |
| Prepregnancy BMI* (kg/m2) | 38.3 ± 10.2 | 35.9 ± 7.1 | <0.01 |
| Obese | 87 (78%) | 402 (88%) | 0.01 |
| GDM† in Prior Pregnancy | 63 (56%) | 61 (13%) | <0.01 |
| Prior Macrosomia | 16 (14%) | 75 (16%) | 0.58 |
| Prior Preterm Delivery | 25 (22%) | 84 (18%) | 0.44 |
| Chronic Hypertension | 26 (23%) | 59 (13%) | <0.01 |
| Gestational Age at First Ultrasound (weeks) | 11.7 (8.9–15.4) | 12.5 (9.7–17.1) | 0.02 |
| Gestational Age at First Screen (weeks) | 14.9 (11.9–16.7) | 25.8 (24.9–27) | <0.01 |
| Gestational Age at Diagnosis (weeks) | 16.6 (12.4–19.5) | 26.9 (25.7–28.1) | <0.01 |
| 1-Hour Glucose Challenge Test (mg/dL) ‡ | 192 ± 43 | 183 ± 36 | 0.04 |
| 3-Hour Glucose Tolerance Testing (mg/dL)‡ | |||
| Fasting | 118 ± 42 | 104 ± 17 | <0.01 |
| 1-Hour | 201 ± 25 | 199 ± 29 | 0.65 |
| 2-Hour | 178 ± 26 | 177 ± 27 | 0.66 |
| 3-Hour | 129 ± 31 | 138 ± 32 | 0.13 |
Data presented as mean ± standard deviation, median (interquartile range), or n (%) as appropriate
*
BMI – body mass index
†
GDM – gestational diabetes mellitus
‡
Results of the the 1-hour and 3-hour glucose tests diagnostic of GDM.