Risk factors for SNDO
| Variable | Unadjusted OR and 95% CI | P value | Adjusted OR and 95% CI | P value |
| Gestational age at birth (≥37 weeks) | 1.07 (0.53 to 2.19) | 0.840 | 1.54 (0.65 to 3.63) | 0.321 |
| Birthweight z scores | 0.64 (0.47 to 0.89) | 0.008* | 0.69 (0.49 to 0.98) | 0.038* |
| Female gender | 0 .71 (0.36 to 1.39) | 0.313 | 0.53 (0.24 to 1.16) | 0.112 |
| No of episodes of hypoglycaemia (<2.6 mmol/L) | 1.06 (0.75 to 1.49) | 0.730 | 0.98 (0.60 to 1.58) | 0.923 |
| General anaesthesia (>3 episodes) | 3.31 (1.29 to 8.50) | 0.013* | 0.77 (0.17 to 3.59) | 0.745 |
| Preoperative CRP levels | 0.90 (0.59 to 1.37) | 0.627 | 0.92 (0.60 to 1.40) | 0.698 |
| CRP levels within 72 hours of surgery | 0.90 (0.63 to 1.28) | 0.555 | 1.06 (0.69 to 1.62) | 0.769 |
| CRP levels after 72 hours of surgery | 0.64 (0.41 to 1.01) | 0.053 | 0.99 (0.63 to 1.56) | 0.985 |
| Any infection | 1.20 (0.49 to 2.96) | 0.683 | 0.44 (0.11 to 1.77) | 0.247 |
| Cumulative duration of antibiotics | 1.05 (1.01 to 1.10) | 0.043* | 1.00 (0.91 to 1.10) | 0.990 |
| Degree of postnatal growth restriction | 2.00 (0.59 to 6.81) | 0.265 | 1.56 (0.62 to 3.97) | 0.348 |
| Length of stay | 1.02 (1.00 to 1.03) | 0.003* | 1.03 (1.00 to 1.06) | 0.034* |
*Statistically significant associations
CRP, C reactive protein.