Significant risk factors for cerebral palsy any motor impairment in surviving infants and for death or the motor impairments in liveborn infants expressed as the odds ratios (OR), p values, and 95% confidence intervals (95% CI)
| Cerebral palsy | Death before the corrected age of 2 years or cerebral palsy | |||||
|---|---|---|---|---|---|---|
| OR | 95% CI | p Value | OR | 95% CI | p Value | |
| No antenatal steroid treatment | 3.6 | 1.3 to 10.0 | 0.015 | 3.2 | 1.7 to 5.9 | <0.001 |
| Vaginal delivery | 4.3 | 1.5 to 12.2 | 0.006 | 2.7 | 1.4 to 5.2 | 0.003 |
| Birth in the university hospital area C | 0.1 | 0.02 to 0.4 | 0.003 | 0.3 | 0.2 to 0.6 | <0.001 |
| Birth in the university hospital area A | 0.2 | 0.03 to 0.8 | 0.030 | – | ||
| Birth weight (per 100 g increase) | – | 0.7 | 0.6 to 0.9 | 0.004 | ||
| Gestational age (per one week increase) | – | 0.8 | 0.7 to 0.997 | 0.046 | ||
| Anomalies | – | 3.6 | 1.2 to 10.8 | 0.021 | ||
| Intraventricular haemorrhage grade 2–4 | – | 2.5 | 1.2 to 5.3 | 0.017 | ||
| Any motor impairment | Death before the corrected age of 2 years or any motor impairment | |||||
|---|---|---|---|---|---|---|
| OR | 95% CI | p Value | OR | 95% CI | p Value | |
| No antenatal steroid treatment | 3.6 | 1.6 to 8.1 | 0.001 | 3.3 | 1.7 to 6.2 | 0.002 |
| Maternal infection | 0.3 | 0.1 to 0.7 | 0.005 | 0.5 | 0.3 to 0.95 | 0.034 |
| Male | 2.9 | 1.3 to 6.2 | 0.006 | 2.1 | 1.2 to 3.6 | 0.010 |
| Intaventricular haemorrhage grade 2–4 | 3.1 | 1.0 to 9.2 | 0.042 | 2.5 | 1.1 to 5.3 | 0.022 |
| Birth in university hospital area C | – | 0.4 | 0.3 to 0.8 | 0.005 | ||
| Vaginal delivery | – | 2.9 | 1.5 to 5.3 | 0.001 | ||
| Birth weight (per 100 g increase) | – | 0.6 | 0.5 to 0.7 | <0.001 | ||