Multiple linear regression analysis to determine independent factors associated with mental developmental index (MDI) scores
| Values are effect size (95% confidence interval) in MDI units of significant factors only. | |
| *p<0.05, **p<0.01, ***p<0.001. | |
| Antenatal, perinatal, and day 1 postnatal | |
| Afro-Caribbean origin | −10.37 (−14.92 to −5.83)*** |
| Maternal education at and beyond A level | 5.02 (1.68 to 8.36)** |
| Male | −4.03 (−6.99 to −1.07)** |
| Antepartum steroids | 4.52 (0.70 to 8.33)* |
| To discharge | |
| Afro-Caribbean origin | −10.44 (−14.86 to −6.01)*** |
| Maternal education at and beyond A level | 3.87 (0.52 to 7.22)* |
| Male | −4.11 (−7.00 to −1.21)** |
| Antepartum steroids | 4.98 (1.26 to 8.70)** |
| Prolonged rupture of membranes | −3.27 (−6.37 to −0.18)* |
| Supplemental oxygen at 36 weeks | −5.03 (−8.31 to −1.74)** |