Table 1.
Characteristics of the study population
| Cohort Characteristics | Cases | Controls |
|---|---|---|
| n = 55,937 | n = 279,618 | |
| Age at diagnosis (years) | No. (%) | No. (%) |
| <50 | 526 (1) | 2656 (1) |
| 50–59 | 6716 (12) | 33,583 (12) |
| 60–69 | 22,532 (40) | 112,544 (40) |
| 70–79 | 17,582 (31) | 87,963 (31) |
| 80+ | 8581 (15) | 42,872 (15) |
| Marital status | ||
| Single/divorced/widowed | 18,753 (34) | 103,830 (37) |
| Married | 37,184 (66) | 175,788 (63) |
| Education level | ||
| <9 yrs | 20,447 (37) | 107,490 (38) |
| 10-12 yrs | 21,532 (38) | 106,261 (38) |
| >12 yrs | 13,532 (24) | 61,699 (22) |
| missing | 447 (1) | 4168 (1) |
| Charlson Comorbidity Index | ||
| 0 | 15,268 (66) | 73,485 (64) |
| 1 | 3722 (17) | 19,636 (17) |
| 2 | 2369 (10) | 11,618 (10) |
| 3+ | 1824 (7) | 11,169 (9) |
| Period of diagnosis/inclusion | ||
| 2007–2009 | 27,874 (50) | 139,311 (50) |
| 2010–2012 | 28,963 (50) | 140,307 (50) |