Logistic regression to evaluate the effect of different perinatal factors on NDI
| NDI | |
| OR (95% CI) | |
| GA (days) | 0.98 (0.93 to 1.03) |
| Female | 0.95 (0.53 to 1.79) |
| SGA | 1.47 (0.66 to 3.07) |
| NEC | 1.32 (0.51 to 3.02) |
| Severe brain injury | 2.63 (1.32 to 5.05)* |
| Low maternal education | 2.58 (1.26 to 5.03)* |
Numbers are presented as OR with 95% CI. Being female was compared with the reference category of being male, low maternal education was compared with a reference category of intermediate–high education. *significant at 0.05 level.
GA, gestational age; NDI, neurodevelopmental impairment; NEC, necrotising enterocolitis ; SGA, small for gestational age.