Table 1 Sociodemographic and other characteristics of the study subjects, Seattle, Washington, USA 2003-2006
| Â | Â | Gestational Diabetes Mellitus | |
|---|---|---|---|
| Â | Entire Study Cohort N = 1290 | No N = 1222 | Yes N = 68 |
Characteristics | n (%) | n (%) | n (%) |
Maternal age at Interview (years)* | 33.3 ± 4.4 | 33.2 ± 4.3 | 35.2 ± 5.0 |
   <35 years | 772 (59.8) | 746 (61.0) | 26 (38.2) |
   ≥ 35 years | 518 (40.2) | 476 (39.0) | 42 (61.8) |
Maternal race/ethnicity* | Â | Â | Â |
   Non-Hispanic White | 1133 (87.8) | 1080 (88.4) | 53 (77.9) |
   Other | 157 (12.2) | 141 (11.5) | 15 (22.1) |
Medical bill payment status | Â | Â | Â |
   Insurance | 1239 (96.1) | 1173 (96.0) | 66 (97.1) |
   Medicaid | 26 (2.0) | 24 (2.0) | 2 (2.9) |
   unknown | 25 (1.9) | 25 (2.0) | 0 (0) |
Nulliparous | 768 (59.5) | 727 (59.5) | 41 (60.3) |
≤ High school education | 37 (2.9) | 33 (2.7) | 4 (5.9) |
Unmarried | 106 (8.2) | 98 (8.0) | 8 (11.8) |
Smoked during pregnancy | 67 (5.2) | 65 (5.3) | 2 (2.9) |
No prenatal vitamins | 32 (2.5) | 30 (2.5) | 2 (2.9) |
Pre-pregnancy body mass index (kg/m2)* | 23.5 ± 4.5 | 23.3 ± 4.4 | 26.6 ± 6.3 |
   Lean (<18.5) | 58 (4.5) | 57 (4.7) | 1 (1.5) |
   Normal (18.5-24.9) | 908 (70.4) | 876 (71.7) | 32 (47.1) |
   Overweight (25-29.9) | 229 (17.7) | 208 (17.0) | 21 (30.9) |
   Obese (≥30) | 95 (7.4) | 81 (6.6) | 14 (20.4) |