| Norwich 1997/2007 | Confidential Enquiries into Maternal and Child Health (CEMACH) 2002/3 | |
| PNMR | 8.7(1 stillbirth and 1 anencephalic) | 31.7 |
| Prematurity | 46% | 36% |
| Antenatal intrauterine growth restriction | 14% | 7.3% |
| <10th centile at delivery | 3% | 2.6% |
| Antenatal macrosomia | 45% | 36% |
| >90th centile at delivery | 40% | 52% |