Additional predictors of cerebral palsy risk in preterm newborns
| Predictor | Univariate analysis* | Multivariable analysis† | ||
|---|---|---|---|---|
| Relative risk | CI | Relative risk | CI | |
| Age (per year older) | 0.82 | 0.73 to 0.93 | 0.86 | 0.76 to 0.97 |
| Socioeconomic (low) | 0.98 | 0.84 to 1.14 | – | – |
| Home (rural) | 1.22 | 0.98 to 1.51 | – | – |
| Enrolment (recent) | 0.82 | 0.72 to 0.94 | 0.84 | 0.73 to 0.96 |
| Prenatal care ≥13 encounters ‡ | 0.83 | 0.69 to 0.99 | 0.80 | 0.66 to 0.95 |
| Hospital care ≥1 admission ‡ | 1.25 | 1.09 to 1.43 | 1.24 | 1.08 to 1.43 |
| Parity (multiparous) | 0.85 | 0.74 to 0.97 | 0.89 | 0.78 to 1.03 |
| Newborn (male) | 1.32 | 1.15 to 1.52 | 1.32 | 1.15 to 1.52 |
Analyses based on 850 events in 87 435 children (absolute risk=9.7 per 1000).
Relative risk estimate from proportional hazards analysis (Cox regression).
CI based on 95% limits using normal approximation (Wald statistic).
*Basic univariate comparison with no adjustments for other baseline differences.
†Adjusted multivariable comparison accounting for significant univariate predictors.
‡In previous year.