Table 1. Distribution of health check and control participants according to age at index date, sex, and index of multiple deprivation.
| Variable | Category | Health check participants | Controls | Mean controls per case1 |
|---|---|---|---|---|
| Freq. (%) | Freq. (%) | |||
| (n = 127,891) | (n = 322,910) | |||
| Age group (years) | 40–44 | 19,250 (15.1) | 61,625 (19.1) | 2.98 |
| 45–54 | 52,733 (41.2) | 145,518 (45.1) | 2.77 | |
| 55–64 | 38,406 (30.0) | 84,467 (26.2) | 2.24 | |
| 65–74 | 17,502 (13.7) | 31,300 (9.7) | 1.92 | |
| Sex | Male | 63,188 (49.4) | 170,965 (52.9) | 2.71 |
| IMD 2015 quintile | Least deprived | 19,880 (15.5) | 55,671 (17.2) | 2.80 |
| 2 | 29,724 (23.2) | 71,179 (22.0) | 2.39 | |
| 3 | 25,817 (20.2) | 70,449 (21.8) | 2.73 | |
| 4 | 24,729 (19.3) | 57,846 (17.9) | 2.34 | |
| Most deprived | 27,741 (21.7) | 67,765 (20.9) | 2.44 |
Abbreviations: IMD, Index of Multiple Deprivation.
1 Mean number of controls matched for each health check participant.