Table 4.
Age-specific IRs of cancer 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 | 7,163 | 4 | 0.6 (0.2–1.5) | 44,183 | 30 | 0.7 (0.5–1.0) | N/A | N/A | N/A | 51,345 | 34 | 0.7 (0.5–0.9) |
| 30–39 | 64,668 | 63 | 1.0 (0.8–1.2) | 127,307 | 127 | 1.0 (0.8–1.2) | N/A | N/A | N/A | 191,975 | 190 | 1.0 (0.9–1.1) |
| 40–49 | 11,4732 | 287 | 2.5 (2.2–2.8) | 162,592 | 359 | 2.2 (2.0–2.4) | N/A | N/A | N/A | 277,324 | 646 | 2.3 (2.2–2.5) |
| 50–59 | 104,188 | 551 | 5.3 (4.9–5.8) | 166,570 | 915 | 5.5 (5.1–5.9) | 218,949 | 1,386 | 6.3 (6.0–6.7) | 489,707 | 2,852 | 5.8 (5.6–6.0) |
| 60–69 | 68,363 | 903 | 13.2 (12.4–14.1) | 120,889 | 1,417 | 11.7 (11.1–12.3) | 447,916 | 5,752 | 12.8 (12.5–13.2) | 637,167 | 8,072 | 12.7 (12.4–12.9) |
| 70–79 | 39,989 | 853 | 21.3 (20.0–22.8) | 93,720 | 1,814 | 19.4 (18.5–20.3) | 165,723 | 3,448 | 20.8 (20.1–21.5) | 299,432 | 6,115 | 20.4 (19.9–20.9) |
| 80+ | 19,783 | 452 | 22.8 (20.8–25.1) | 53,227 | 1,282 | 24.1 (22.8–25.4) | 4,004 | 114 | 28.5 (23.7–34.2) | 77,015 | 1,848 | 24.0 (22.9–25.1) |
| Total | 418,886 | 3,113 | 7.4 (7.2–7.7) | 768,487 | 5,944 | 7.7 (7.5–7.9) | 836,592 | 10,700 | 12.8 (12.6–13.0) | 2,023,965 | 19,757 | 9.8 (9.6–9.9) |
Notes: Subjects contributed PYs within different age groups while aging during follow-up. Age at the time of cancer diagnosis was registered for the cancer events.
Abbreviations: IRs, incidence rates; PY, person-years, STAC, Scandinavian Thrombosis and Cancer; DCH, Danish Diet, Cancer and Health Study; HUNT 2, second Nord-Trøndelag Health Study; N/A, not applicable.