| Table 1: Demographic characteristics of the women in the study with "no diagnosis" and the women tested for glucose tolerance | ||
| Group | ||
| Characteristic | "No diagnosis" n = 358 |
Tested n = 1074 |
| Mean age, yr (and standard deviation&$160;[SD]) | 28.5 (5.6) | 28.9 (5.2) |
| % of group < 25 yr | 23.2 | 19.3 |
| % of group >= 35 yr | 15.1 | 13.8 |
| Mean parity (and SD) | 0.8 (0.9) | 0.7 (0.9) |
| % of women with parity | ||
| 0 | 46.4 | 49.4 |
| 1 | 32.4 | 34.7 |
| >=2 | 21.2 | 15.9* |
| Mean pregravid weight, kg (and SD) | 60.9 (11.2) | 62.6 (12.7) |
| Mean body mass index [BMI], kg/m2 (and SD) | 23.0 (3.8) | 23.7 (4.8) |
| % with BMI > 27 kg/m2 | 13.4 | 20.5 |
| % with ethnic background | ||
| White | 81.8 | 87.5# |
| Black | 13.4 | 9.4* |
| Asian | 4.8 | 3.1 |
| % with family history of diabetes mellitus | 13.4 | 24.5§ |
| % with chronic disease | 8.9 | 12.7 |
| *p < 0.05.
#p < 0.01. §p < 0.001. | ||