Table 1.
Characteristics of adolescent women at study admission (n=1061)
| Characteristics | Total adolescents n=1061 |
Adolescents without GDM n=990 |
Adolescents with GDM n=71 |
P values* |
| Age (years) | 16.1±1.6 | 16.1±1.5 | 16.2±1.6 | 0.51 |
| Weight (kg) | 59.1±10.0 | 58.7±9.8 | 63.9±11.5 | 0.0001 |
| Height (m) | 1.56±0.05 | 1.56±0.05 | 1.56±0.05 | 0.69 |
| Body mass index (kg/m2) | 24.3±3.6 | 24.1±3.5 | 26.2±4.1 | 0.0001 |
| Gestational age at 2 hours 75 g OGTT (weeks) | 25.0±4.4 | 24.1±3.5 | 26.1±4.1 | 0.008 |
| Glucose (mg/dL) | ||||
| Fasting | 80.2±7.3 | 79.2±6.2 | 94.4±6.2 | 0.0001 |
| 1 hour | 105.2±25.7 | 103.6±24.6 | 127.9±29.5 | 0.0001 |
| 2 hours | 97.9±19.4 | 96.6±18.4 | 114±24.4 | 0.0001 |
| Number of pregnancies | ||||
| 1 | 923 (86.9) | 865 (87.3) | 58 (81.7) | 0.08 |
| 2 | 121 (11.4) | 110 (11.1) | 11 (15.5) | 0.17 |
| 3 or more | 18 (1.7) | 16 (1.6) | 2 (2.8) | 0.61 |
| Normal weight | 582 (55.6) | 559 (57.3) | 23 (32.4) | 0.001 |
| Overweight | 357 (34.1) | 324 (33.2) | 33 (46.5) | 0.01 |
| Obesity | 92 (8.8) | 77 (7.9) | 15 (21.1) | 0.001 |
| First-degree relative with type 2 diabetes | 157 (14.8) | 140 (14.1) | 17 (23.9) | 0.0.2 |
Values expressed as mean±SD deviation or frequency (percentage).
*Student’s t-test or χ2 test.
GDM, gestational diabetes mellitus; OGTT, oral glucose tolerance test.