Table 1. Total FIT usage within 1 year after receiving a personal invitation with a FIT kit (A), FIT request options (B), or information only (C, control).
| Group C (control) | Group A (total usage rate and comparison with control group) | Group B (total usage rate and comparison with control group) | |||||||
| Information only (N=5838) | Invitation + FIT (N=5850) | Differencein % points | p-value*2 A vs. C | Relative FIT usage [95% CI] | Invitation + request option (N=5844) | Differencein % points | p-value*2 B vs. C | Relative FIT usage [95% CI] | |
| Total (%)*1 | 583 (10.0) | 1738 (29.7) | 19.7 | <0.0001 | 3.0 [2.7; 3.2] | 1616 (27.7) | 17.7 | < 0.0001 | 2.8 [2.5; 3.0] |
| Men (%)*3 | 182 (5.8) | 779 (25.2) | 19.4 | <0.0001 | 4.4 [3.8; 5.1] | 747 (23.5) | 17.7 | < 0.0001 | 4.1 [3.5; 4.8] |
| Women (%)*3 | 401 (14.9) | 932 (33.7) | 18.8 | <0.0001 | 2.3 [2.0; 2.5] | 861 (32.3) | 17.4 | < 0.0001 | 2.2 [1.9; 2.4] |
*1 Total FIT usage: FITs used in routine practice per group, plus returned intervention FITs in groups A and B
*2 Contingency table analysis using two-sided chi-squared test
*3 Number of men and women per group: 3086 men, 2764 women (A); 3176 men, 2668 women (B); 3153 men, 2685 women (C). Missing gender information in returned FITs: n=27 (A) and n=8 (B)
FIT: fecal immunological test; CI: confidence interval