Table 1 Baseline characteristics of the study population
Directly mailed group N = 3265 | Opt-in group N = 3264 | Control group N = 3262 | |
|---|---|---|---|
n (%) | n (%) | n (%) | |
Age (years) | |||
30–39 | 1236 (37.9) | 1215 (37.2) | 1251 (38.4) |
40–49 | 1300 (39.8) | 1353 (41.5) | 1342 (41.1) |
50–64 | 729 (22.3) | 696 (21.3) | 669 (20.5) |
Screened in the previous screening rounda | |||
Not screened | 1298 (39.8) | 1272 (38.9) | 1249 (38.3) |
Screened | 1967 (60.3) | 1992 (61.0) | 2013 (61.7) |
Screening historya | |||
Unscreened | 604 (18.5) | 595 (18.2) | 567 (17.4) |
Underscreened | 802 (24.6) | 842 (25.8) | 842 (25.8) |
Regularly screened | 1859 (56.9) | 1827 (56.0) | 1853 (56.8) |