Table 3.
Age-specific IRs of VTE per 1,000 PY with 95% confidence intervals within the separate cohorts and in the merged STAC cohort
| Age (years) | Tromsø 4
|
HUNT 2
|
DCH
|
STAC
|
||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PY | Events | IR | PY | Events | IR | PY | Events | IR | PY | Events | IR | |
| 20–29 | 6,648 | 1 | 0.2 (0.02–1.1) | 39,515 | 12 | 0.3 (0.2–0.5) | N/A | N/A | N/A | 46,163 | 13 | 0.3 (0.2–0.5) |
| 30–39 | 55,087 | 17 | 0.3 (0.2–0.5) | 105,397 | 35 | 0.3 (0.2–0.5) | N/A | N/A | N/A | 160,484 | 52 | 0.3 (0.2–0.4) |
| 40–49 | 99,147 | 46 | 0.5 (0.3–0.6) | 137,592 | 78 | 0.6 (0.5–0.7) | N/A | N/A | N/A | 236,739 | 124 | 0.5 (0.4–0.6) |
| 50–59 | 96,481 | 118 | 1.2 (1.0–1.5) | 141,081 | 127 | 0.9 (0.8–1.1) | 221,503 | 153 | 0.7 (0.6–0.8) | 459,064 | 398 | 0.9 (0.8–1.0) |
| 60–69 | 65,749 | 139 | 2.1 (1.8–2.5) | 101,471 | 176 | 1.7 (1.5–2.0) | 359,362 | 480 | 1.3 (1.2–1.5) | 526,582 | 795 | 1.5 (1.4–1.6) |
| 70–79 | 40,241 | 179 | 4.4 (3.8–5.2) | 83,773 | 299 | 3.6 (3.2–4.0) | 69,888 | 158 | 2.3 (1.9–2.6) | 193,903 | 636 | 3.3 (3.0–3.5) |
| 80+ | 20,342 | 164 | 8.1 (6.9–9.4) | 45,779 | 262 | 5.7 (5.1–6.5) | N/A | N/A | N/A | 66,121 | 426 | 6.4 (5.9–7.1) |
| Total | 383,695 | 664 | 1.7 (1.6–1.9) | 654,609 | 989 | 1.5 (1.4–1.6) | 650,753 | 791 | 1.2 (1.1–1.3) | 1,689,056 | 2,444 | 1.4 (1.4–1.5) |
Notes: Subjects contributed PYs within different age groups while aging during follow-up. Age at the time of VTE diagnosis was registered for the VTE events.
Abbreviations: IRs, incidence rates; PY, person-years; STAC, Scandinavian Thrombosis and Cancer; VTE, venous thromboembolism; PE, pulmonary embolism; DCH, Danish Diet, Cancer and Health Study; HUNT 2, second Nord-Trøndelag Health Study; N/A, not applicable.