Table 1.
Maternal Characteristics of the Study Population
| Total | GLT <140 mg/dL | GLT ≥140mg/dL | |
|---|---|---|---|
| N = 1857 (100%) | n = 1593 (85.8%) | n = 264 (14.2%) | |
| Age at pregnancy, mean ± SD, y | 28.1 ± 5.5 | 27.8 ± 5.5 | 29.7 ± 5.4 |
| Race/ethnicity, n (%) | |||
| Non-Hispanic white | 513 (28) | 452 (28) | 61 (23) |
| Non-Hispanic black | 482 (26) | 435 (27) | 47 (18) |
| Hispanic | 512 (27) | 441 (28) | 71 (27) |
| Asian/Pacific Islander | 350 (19) | 265 (17) | 85 (32) |
| Educational level, n (%) | |||
| High school or less | 539 (29) | 459 (29) | 80 (30) |
| Some college or associate degree | 544 (29) | 461 (29) | 83 (31) |
| College degree or higher | 774 (42) | 673 (42) | 101 (39) |
| Full-time employed/student, n (%) | 1365 (74) | 1179 (74) | 186 (70) |
| Married/living with a partner, n (%) | 1392 (75) | 1177 (74) | 215 (81) |
| Family history of diabetes, n (%) | 357 (19) | 293 (18) | 64 (24) |
| Nulliparity, n (%) | 925 (50) | 810 (51) | 115 (44) |
| Prepregnancy BMI, kg/m2 | |||
| Mean ± SD | 23.6 ± 3.0 | 23.6 ± 2.9 | 23.7 ± 3.0 |
| Normal (<25), n (%) | 1249 (67) | 1081 (68) | 168 (64) |
| Overweight (≥25), n (%) | 608 (33) | 512 (32) | 96 (36) |
| Gestational week at GLT, mean ± SD, wk | 27.0 ± 2.5 | 27.0 ± 2.5 | 26.8 ± 2.7 |
| Early gestational weight gain,a mean ± SD, kg | 2.9 ± 2.3 | 3.0 ± 2.2 | 2.8 ± 2.4 |
| Physical activity,b mean ± SD, h/wk | 18.8 ± 19.3 | 19.0 ± 19.3 | 17.5 ± 18.9 |
a
Gestational weight gain from enrollment (median: 12 weeks’ gestation) to the next visit (median: 19 weeks’ gestation).
b
Moderate to vigorous level of physical activity.