Preterm (<37 gestational weeks) infants in England with a diagnosis of brain injury to before and after exclusion of conditions leading to brain injury prior to birth; data for 2010 and 2011 are adjusted to account for the incomplete coverage of the NNRD during these years; from 2012 onwards the NNRD has complete population coverage of neonatal admissions in England so no adjustment was necessary and data are presented as a rate (95% CI)
| Year | Preterm infants recorded in the NNRD | Preterm live births in England | Preterm infants with brain injury to before exclusions | Preterm infants with brain injury adjusted for incomplete NNRD coverage | Preterm infants with brain injury after adjustment and exclusions | Rate of brain injuries per 1000 preterm live births to after exclusions (95% CI) |
| 2010 | 28 960 | 43 928 | 1116 | 1203 to 1238 | 1173 to 1208 | 26.71 to 27.51 |
| 2011 | 31 249 | 44 547 | 1190 | 1219 to 1234 | 1197 to 1213 | 26.88 to 27.22 |
| 2012 | 32 752 | 49 949 | 1236 | not adjusted | 1213 | 24.28 (22.96, 25.69) |
| 2013 | 32 264 | 48 844 | 1212 | not adjusted | 1191 | 24.38 (23.04, 25.81) |
| 2014 | 33 036 | 49 379 | 1249 | not adjusted | 1237 | 25.05 (23.69, 26.49) |
| 2015 | 33 740 | 50 308 | 1247 | not adjusted | 1230 | 24.45 (23.12, 25.85) |