TABLE 2.
Prevalence and RR of CP by Prepregnancy BMI
| Maternal BMI | Total Study Sample, n (%) | With CP, n (per 1000 Children) | RR (95% CI) | |
|---|---|---|---|---|
| Crude | Adjusteda | |||
| Per unit BMI increase | — | — | 1.04 (1.02–1.06) | 1.04 (1.02–1.06) |
| <18.5 | 6914 (3.7) | 11 (1.6) | 0.96 (0.52–1.77) | 0.91 (0.50–1.67) |
| 18.5–22.9 | 88 696 (47.0) | 147 (1.7) | 1.00 (Ref) | 1.00 (Ref) |
| 23.0–24.9 | 36 451 (19.3) | 83 (2.3) | 1.37 (1.05–1.80) | 1.35 (1.03–1.78) |
| 25.0–29.9 | 39 674 (21.0) | 103 (2.6) | 1.57 (1.22–2.02) | 1.56 (1.21–2.01) |
| ≥30 | 17 053 (9.0) | 46 (2.7) | 1.63 (1.17–2.27) | 1.55 (1.11–2.18) |
Total study sample in adjusted analysis, n = 185 985; 386 with CP. Ref, reference category. —, not applicable.
a
Adjusted for maternal occupational status, smoking in the first part of pregnancy and age.