Table 1.
Comparison of study hospital catchment population estimates based on different approaches
| Age group | Estimated catchment (Study method) | Total CCG catchment | Estimated based on ⩽20 min drive-time | Estimated based on ⩽25 min drive-time | Estimated based on ⩽30 min drive-time | Estimated based on <40 min drive-time | Estimated based on <60 min drive-time |
|---|---|---|---|---|---|---|---|
| Five adult age groupings | |||||||
| 18–34 | 231 342 | 268 093 (↑16%) | 208 924 (↓10%) | 238 301 (↑3%) | 295 130 (↑28%) | 442 590 (↑91%) | 870 841 (↑276%) |
| 35–49 | 184 269 | 211 568 (↑15%) | 130 881 (↓29%) | 162 469 (↓12%) | 211 452 (↑15%) | 337 781 (↑83%) | 714 415 (↑288%) |
| 50–64 | 152 380 | 178 970 (↑17%) | 108 404 (↓29%) | 143 508 (↓6%) | 196 307 (↑29%) | 331 795 (↑118%) | 732 702 (↑381%) |
| 65–74 | 74 245 | 89 015 (↑20%) | 52 954 (↓29%) | 73 368 (↓1%) | 102 148 (↑38%) | 175 757 (↑137%) | 391 718 (↑428%) |
| 75–84 | 45 989 | 55 720 (↑21%) | 33 712 (↓27%) | 46 919 (↑2%) | 65 244 (↑42%) | 111 109 (↑142%) | 239 310 (↑420%) |
| 85+ | 19 229 | 23 938 (↑24%) | 15 280 (↓21%) | 20 400 (↑6%) | 28 261 (↑47%) | 47 108 (↑145%) | 99 865 (↑419%) |
| Two adult age groupings | |||||||
| 18–64 | 567 991 | 658 631 (↑16%) | 448 209 (↓21%) | 544 278 (↓4%) | 702 889 (↑24%) | 1 112 166 (↑96%) | 2 317 958 (↑308%) |
| ⩾65 | 139 463 | 168 673 (↑21%) | 101 946 (↓27%) | 140 687 (↑1%) | 195 653 (↑40%) | 333 974 (↑139%) | 730 893 (↑424%) |
| Total | 707 454 | 827 304 (↑17%) | 550 155 (↓22%) | 684 965 (↓3%) | 898 542 (↑27%) | 1 446 140 (↑104%) | 3 048 851 (↑331%) |