Table 1.
Distribution of Baseline Characteristics in All Patients With Cancer Matched to Control Patients With CHD, Diagnosed Between 1999 and 2013
| Characteristic | All Cancer Patients n=12,393 |
CHD Patients n=12,393 |
|---|---|---|
| Sex, No. (%) | ||
| Male | 7,185 (57.9) | 8,126 (65.6) |
| Female | 5,208 (42.1) | 4,267 (34.4) |
| Age, mean (SD), y | 67.5 (10.5) | 61.3 (11.9) |
| Smoking status at diagnosis, No. (%) | ||
| Current | 10,794 (87.1) | 10,794 (87.1) |
| <3-y ex-smoker | 1,599 (12.9) | 1,599 (12.9) |
| Index of multiple deprivation, No. (%) | ||
| 1 (least deprived) | 925 (7.5) | 934 (7.5) |
| 2 | 1,315 (10.6) | 1,372 (11.1) |
| 3 | 1,423 (11.5) | 1,414 (11.4) |
| 4 | 1,758 (14.2) | 1,690 (13.6) |
| 5 (most deprived) | 1,764 (14.2) | 1,773 (14.3) |
| Missing | 5,208 (42.0) | 5,210 (42.0) |
| Frequency of smoking, No. (%) | ||
| Light | 1,496 (13.9) | 1,367 (12.7) |
| Moderate | 2,093 (19.4) | 1,981 (18.4) |
| Heavy | 1,788 (16.6) | 1,794 (16.6) |
| Frequency unknown | 5,417 (50.2) | 5,652 (52.4) |
| Asthma, No. (%) | ||
| No | 11,271 (91.9) | 11,456 (92.4) |
| Yes | 1122 (9.1) | 937 (7.6) |
| Chronic kidney disease, No. (%) | ||
| No | 11,481 (92.6) | 11,767 (94.9) |
| Yes | 912 (7.4) | 626 (5.1) |
| Chronic obstructive pulmonary disease, No. (%) | ||
| No | 9,642 (77.8) | 11,091 (89.5) |
| Yes | 2751 (22.2) | 1302 (10.5) |
| Diabetes, No. (%) | ||
| No | 11,339 (91.5) | 11,182 (90.2) |
| Yes | 1054 (8.5) | 1211 (9.8) |
| Hypertension, No. (%) | ||
| No | 9,887 (79.8) | 9,658 (77.9) |
| Yes | 2506 (20.2) | 2735 (22.1) |
| Peripheral arterial disease, No. (%) | ||
| No | 11,517 (92.9) | 11,649 (94) |
| Yes | 876 (7.1) | 744 (6.0) |
| Stroke, No. (%) | ||
| No | 11,582 (93.5) | 11,790 (95.1) |
| Yes | 811 (6.5) | 603 (4.9) |
| Psychosis, No. (%) | ||
| No | 12,289 (99.2) | 12,306 (99.3) |
| Yes | 104 (0.8) | 87 (0.7) |
CHD=coronary heart disease.