Demographics of the study population, England, 2005–2010
| Number of people | Percentage of total | |
|---|---|---|
| Age group (years) | ||
| 20–29 | 136 464 | 21.34 |
| 30–39 | 136 464 | 20.76 |
| 40–49 | 92 744 | 14.11 |
| 50–59 | 74 659 | 11.36 |
| 60–69 | 61 373 | 9.34 |
| 70–79 | 64 470 | 9.81 |
| 80–89 | 67 004 | 10.19 |
| ≥90 | 20 267 | 3.08 |
| Gender | ||
| Male | 328 382 | 49.96 |
| Female | 328 882 | 50.04 |
| Charlson index score | Derived from Read codes (n) | (%) | Derived from ICD10 codes (n) | (%) | Derived from combined codes (n) | (%) |
|---|---|---|---|---|---|---|
| 0 | 467 501 | 71.13 | 573 047 | 87.19 | 456 681 | 69.48 |
| 1 | 111 178 | 16.92 | 42 660 | 6.49 | 110 692 | 16.84 |
| 2 | 42 246 | 6.43 | 21 816 | 3.32 | 42 579 | 6.48 |
| 3 | 19 680 | 2.99 | 8619 | 1.31 | 21 641 | 3.29 |
| 4 | 8406 | 1.28 | 4109 | 0.63 | 10 574 | 1.61 |
| ≥5 | 8253 | 1.26 | 7013 | 1.07 | 15 097 | 2.30 |
ICD, International Classification of Diseases.