Table 1.
Characteristics of the Project Cohort
| Cases | Cases with missing ethnicity following linkage with HES records (% of cases) | Chi2 statistic (P-value) |
||
|---|---|---|---|---|
| Site | Lower GI | 24 446 | 4112(17) | |
| Breast | 28 795 | 6029(21) | ||
| Lung | 24 060 | 5660(24) | ||
| Prostate | 23 716 | 8814(37) | ||
| Upper GI | 10 677 | 1727(16) | 3500(p < 0.001) | |
| Year of diagnosis | 2001 | 15 102 | 4118(27) | |
| 2002 | 15 523 | 3840(25) | ||
| 2003 | 15 731 | 3772(24) | ||
| 2004 | 16 162 | 3681(23) | ||
| 2005 | 16 317 | 3632(22) | ||
| 2006 | 16 458 | 3470(21) | ||
| 2007 | 16 401 | 3829(23) | 206(p < 0.001) | |
| Deprivation | 1 (most deprived) | 26 738 | 5149(19) | |
| (Income Domain of | 2 | 22 104 | 4856(22) | |
| Index of Multiple | 3 | 22 759 | 5425(24) | |
| Deprivation 2007) | 4 | 22 465 | 5942(26) | |
| 5 (least deprived) | 17 628 | 4970(28) | 6300(p < 0.001) | |
| Age | < 40 | 1771 | 251(14) | |
| 40-49 | 5622 | 892(16) | ||
| 50-59 | 15 338 | 2933(19) | ||
| 60-69 | 27 759 | 5924(21) | ||
| 70-79 | 35 258 | 8538(24) | ||
| 80+ | 25 946 | 7804(30) | 1100(p < 0.001) | |
| Sex | Male | 59 592 | 15 454(26) | |
| Female | 52 102 | 10 888(21) | 391(p < 0.001) | |
| Death Certificate | No | 106 217 | 23 577(22) | |
| Only registration | Yes | 5477 | 2765(50) | 2300(p < 0.001) |
| Ever seen privately | No | 106 566 | 23 113(22) | |
| (cancer was diagnosed or treated outside the free National Health Service at least on one occasion) | Yes | 5128 | 3229(63) | 4600(p < 0.001) |
| Surgery | No | 58 875 | 18 344(31) | |
| Yes | 52 819 | 7998(15) | 4000(p < 0.001) | |
| Radiotherapy | No | 73 520 | 19 009(26) | |
| Yes | 38 174 | 7333(19) | 616(p < 0.001) | |
| Chemotherapy | No | 93 778 | 24 650(26) | |
| Yes | 17 916 | 1692(9) | 2400(p < 0.001) | |
| Screen detected | No | 22 900 | 5012(22) | |
| breast cancer* | Yes | 5895 | 1017(17) | 61(p < 0.001) |
| HES-linked | No | 19 694 | 19 694(100) | |
| Yes | 92 000 | 6648(7) | ||
| Number of admissions | 0 | 19 694 | 19 694(100) | |
| (includes non-cancer admissions) | 1 | 8012 | 2071(26) | |
| 2 | 10 261 | 1414(14) | ||
| 3 | 10 523 | 985(9) | ||
| 4 | 9332 | 562(6) | ||
| 5+ | 53 872 | 1616(3) | 6300(p < 0.001)** |
* Comparison of breast cancer cases who were and were not detected by population screening.
** Chi-square test excludes cases with no admissions as, by definition, none have ethnicity recorded.