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The relative risks of GDM in pregnancy in the Cambridge Baby Growth Study for groups stratified by AAM
| Age at menarche (years) | Gestational diabetes [n (%)] | Not gestational diabetes [n (%)] | Relative risk |
|---|---|---|---|
| 8–9.9 | 3 (33.3) | 6 (66.7) | 3.7 (1.4, 9.7) |
| 10–11.9 | 14 (9.6) | 132 (90.4) | 1.1 (0.6, 1.9) |
| 12–13.9 | 42 (9.1) | 422 (90.9) | Reference |
| 14–15.9 | 21 (8.8) | 217 (91.2) | 1.0 (0.6, 1.6) |
| 16–17.9 | 7 (21.9) | 25 (78.1) | 2.4 (1.2, 4.9) |
