Table 2.
Description of cases and controls. Values are numbers (percentages) unless stated otherwise
| Cases (n=144 959) | Controls (n=549 336) | |
|---|---|---|
| Matching factors | ||
| Sex: | ||
| Female | 86 071 (59.4) | 335 272 (61.0) |
| Male | 58 888 (40.6) | 214 064 (39.0) |
| Age at index date (in years): | ||
| 18-29 | 10 849 (7.5) | 38 761 ( 7.1) |
| 30-49 | 28 762 (19.8) | 104 708 (19.1) |
| 50-59 | 27 833 (19.2) | 105 157 (19.1) |
| 60-69 | 31 134 (21.5) | 121 108 (22.0) |
| 70-79 | 28 025 (19.3) | 110 097 (20.0) |
| 80-89 | 15 891 (11.0) | 61 566 (11.2) |
| ≥90 | 2465 (1.7) | 7939 (1.4) |
| Socioeconomic status (practice level)*: | ||
| 1 (least deprived) | 28 938 (20.0) | 109 663 (20.0) |
| 2 | 28 853 (19.9) | 109 253 (19.9) |
| 3 | 29 811 (20.6) | 112 888 (20.5) |
| 4 | 30 550 (21.1) | 115 678 (21.1) |
| 5 (most deprived) | 26 807 (18.5) | 101 854 (18.5) |
| Other characteristics | ||
| Mean (interquartile range) length of follow-up (in years) | 8.6 (4.3-12.1) | 8.6 (4.3-12.1) |
| Body mass index category: | ||
| Underweight | 2776 (1.9) | 10 549 (1.9) |
| Normal weight | 50 530 (34.9) | 188 060 (34.2) |
| Overweight | 47 886 (33.0) | 177 603 (32.3) |
| Obese | 29 581 (20.4) | 109 440 (19.9) |
| Missing | 14 186 (9.8) | 63 684 (11.6) |
| Smoking status: | ||
| Non-smoker | 54 751 (37.8) | 208 436 (37.9) |
| Current smoker | 36 107 (24.9) | 141 826 (25.8) |
| Ex-smoker | 52 353 (36.1) | 186 373 (33.9) |
| Missing | 1784 (1.2) | 12 701 (2.3) |
| Alcohol use: | ||
| Non-drinker | 14 481 (10.0) | 56 774 (10.3) |
| Current drinker | 103 113 (71.1) | 383 976 (69.9) |
| Ex-drinker | 12 786 ( 8.8) | 45 242 (8.2) |
| Missing | 14 579 (10.1) | 63 344 (11.5) |
*Measured by Index of Multiple Deprivation score.