Baseline demographic characteristics in cases (all gastrointestinal cancers) and all matched controls by database (QResearch or CPRD). Values are percentages and numbers
| QResearch | CPRD | ||||
|---|---|---|---|---|---|
| Cases (n=28 625) | Controls (n=133 770) | Cases (n=27 324) | Controls (n=27 850) | ||
| Sex: | |||||
| Male | 59.9 (17 146) | 59.9 (80 083) | 58.1 (15 871) | 58.1 (74 310) | |
| Female | 40.1 (11 479) | 40.1 (53 687) | 41.9 (11 453) | 41.9 (53 540) | |
| Age band (years): | |||||
| 50-54 | 4.9 (1401) | 4.8 (6455) | 4.9 (1338) | 4.9 (6247) | |
| 55-64 | 20.5 (5876) | 20.5 (27 424) | 20.1 (5502) | 20.3 (25 954) | |
| 65-74 | 33.6 (9632) | 34.0 (45 511) | 31.7 (8668) | 32.3 (41 286) | |
| 75-84 | 34.0 (9723) | 34.2 (45 688) | 32.1 (8765) | 32.5 (41 491) | |
| ≥85 | 7.0 (1993) | 6.5 (8692) | 11.2 (3051) | 10.1 (12872) | |
| Ethnicity: | |||||
| White | 23.1 (6600) | 21.1 (28 228) | 7.7 (2107) | 7.1 (9069) | |
| Not recorded* | 76.0 (21 754) | 77.8 (104 022) | 88.9 (24 281) | 89.6 (114 513) | |
| Other | 0.9 (271) | 1.1 (1520) | 3.4 (936) | 3.3 (4268) | |
| Asian | 0.4 (111) | 0.6 (741) | 0.2 (45) | 0.3 (414) | |
| Black | 0.4 (103) | 0.4 (506) | 0.1 (40) | 0.1 (169) | |
| Other | 0.2 (57) | 0.2 (273) | 3.1 (851) | 2.9 (3685) | |
| Deprivation (5th of Townsend score): | |||||
| 1 (most affluent)† | 25.4 (7059) | 26.1 (33 900) | 28.0 (2737) | 29.6 (13 542) | |
| 2* | 21.4 (5944) | 22.5 (29 169) | 24.2 (2358) | 24.0 (10 970) | |
| 3* | 20.7 (5768) | 20.2 (26 163) | 20.1 (1966) | 19.8 (9029) | |
| 4* | 18.3 (5099) | 17.8 (23 131) | 16.4 (1605) | 15.8 (7212) | |
| 5, most deprived† | 14.2 (3966) | 13.4 (17 376) | 11.2 (1092) | 10.8 (4922) | |
| Not recorded | 2.8 (789) | 3.0 (4031) | 64.3 (17 566) | 64.3 (82 175) | |
*Assumed white for analyses.
†Proportion only within recorded data.