| A&E | Accident and Emergency |
| APC | Admitted Patient Care |
| BIC | Bayesian Information Criterion |
| CNS | Central nervous system |
| FCE | Finished consultant episode |
| GOR | Government Office Region |
| HES | Hospital Episode Statistics |
| HESID | Hospital Episode Statistics Identifier |
| ICU | intensive care unit |
| ICD10 | International Classification of Diseases, 10th Edition |
| IMD2004 | Index of Multiple Deprivation 2004 |
| IRR | Incidence rate ratio |