Prevalence and odds ratios of cerebral palsy in ED quintiles (singleton births)
| % of total singleton births | Children with CP | Total children | Prevalence/1000 | OR (95% CI) (quintile 1 as reference) | OR adjusted for BW and gestation (95% CI) | |
|---|---|---|---|---|---|---|
| Quintile 1 | 19.2 | 34 | 19691 | 1.7 | 1.00 | 1.00 |
| Quintile 2 | 17.1 | 41 | 17563 | 2.3 | 1.25 (0.82 to 1.91) | 1.39 (0.91 to 2.14) |
| Quintile 3 | 17.0 | 45 | 17428 | 2.6 | 1.38 (0.91 to 2.09) | 1.55 (1.02 to 2.35) |
| Qunitile 4 | 18.8 | 49 | 19330 | 2.5 | 1.35 (0.90 to 2.03) | 1.39 (0.92 to 2.10) |
| Quintile 5 | 23.6 | 75 | 24255 | 3.1 | 1.65 (1.14 to 2.39) | 1.55 (1.06 to 2.25) |
| Quintile missing | 4.2 | 11 | 4342 | |||
| χ2 for linear trend | 7.57 (p = 0.006) |