Baseline characteristics of patients who enrolled in the Trillium Drug Program before and after their cancer diagnosis
| Characteristic | No. (%) of patients* | Standardized difference | ||
|---|---|---|---|---|
| TDP claims began before cancer diagnosis n = 18 631 | TDP claims began after cancer diagnosis n = 31 261 | Overall n = 49 892 | ||
| Age at diagnosis date, yr, mean ± SD | 56.23 ± 8.14 | 51.33 ± 9.73 | 53.16 ± 9.47 | 0.55 |
| Age at diagnosis date, yr, median (IQR) | 59 (53–62) | 54 (46–59) | 56 (49–60) | 0.63 |
| Age group at cancer diagnosis, yr | ||||
| 18–24 | 134 (0.7) | 636 (2.0) | 770 (1.5) | 0.11 |
| 25–44 | 1572 (8.4) | 5858 (18.7) | 7430 (14.9) | 0.30 |
| 45–64 | 16 925 (90.8) | 24 767 (79.2) | 41 692 (83.6) | 0.33 |
| Sex | ||||
| Female | 10 387 (55.8) | 18 559 (59.4) | 28 946 (58.0) | 0.07 |
| Male | 8244 (44.2) | 12 702 (40.6) | 20 946 (42.0) | 0.07 |
| Income quintile | ||||
| 1 (lowest) | 5009 (26.9) | 6713 (21.5) | 11 722 (23.5) | 0.13 |
| 2 | 4385 (23.5) | 6798 (21.7) | 11 183 (22.4) | 0.04 |
| 3 | 3656 (19.6) | 6253 (20.0) | 9909 (19.9) | 0.01 |
| 4 | 3144 (16.9) | 6030 (19.3) | 9174 (18.4) | 0.06 |
| 5 (highest) | 2379 (12.8) | 5381 (17.2) | 7760 (15.6) | 0.12 |
| Unknown/missing | 58 (0.3) | 86 (0.3) | 144 (0.3) | 0.01 |
| Residence | ||||
| Urban | 15 138 (81.2) | 26 853 (85.9) | 41 991 (84.2) | 0.13 |
| Rural | 3490 (18.7) | 4393 (14.0) | 7883 (15.8) | 0.13 |
| Unknown/missing | ≤ 5 | ≤ 20 | ≤ 20 | 0.02 |
| Chronic conditions | ||||
| Asthma | 3269 (17.5) | 3349 (10.7) | 6618 (13.3) | 0.20 |
| Congestive heart failure | 1383 (7.4) | 476 (1.5) | 1859 (3.7) | 0.29 |
| Chronic obstructive pulmonary disease | 4336 (23.3) | 3215 (10.3) | 7551 (15.1) | 0.35 |
| Hypertension | 10 583 (56.8) | 9925 (31.7) | 20 508 (41.1) | 0.52 |
| Diabetes | 6356 (34.1) | 4512 (14.4) | 10 868 (21.8) | 0.47 |
| Rheumatoid arthritis | 641 (3.4) | 397 (1.3) | 1038 (2.1) | 0.14 |
| Crohn disease and colitis | 441 (2.4) | 288 (0.9) | 729 (1.5) | 0.11 |
Note: IQR = interquartile range, SD = standard deviation, TDP = Trillium Drug Program.
↵* Except where noted otherwise.