Table 2.
Risk of type 1 diabetes in offspring in relation to maternal diabetes and BMI class
| Maternal BMI class in early pregnancy | No maternal diabetes (n = 15,981)† | Maternal diabetes (n = 198)‡ | ||
|---|---|---|---|---|
| Control children | Index children | Control children | Index children | |
| Underweight (<18.5 kg/m2) | 529 (4.1) | 110 (3.5) | 1 (0.9) | 0 (0.0) |
| Normal weight (18.5–24.9 kg/m2) | 8711 (67.8) | 2100 (66.9) | 58 (53.7) | 49 (54.4) |
| Overweight (25.0–29.9 kg/m2) | 2628 (20.5) | 654 (20.8) | 30 (27.8) | 26 (28.9) |
| Obese (≥30.0 kg/m2) | 972 (7.6) | 277 (8.8) | 19 (17.6) | 15 (16.7) |
Data are given as n (%)
† p = 0.04
‡ p = 0.83