Table 2.
Group | Subjects enrolled (n) | CRC incidence in screening phase | Subjects followed (n) | CRC incidence in follow up phase | CRC incidence in screening and follow up phases |
1 | 2538 | 13 (0.51)* | 2525 | 21 (0.88)† | 34 (1.35) |
2 | 1010 | 6 (0.59) | 1004 | 23 (2.28) | 29 (2.89) |
3 | 1376 | 7 (0.51) | 1369 | 13 (0.94) | 20 (1.46) |
1+2 | 3548 | 19 (0.54) | 3529 | 44 (1.25)‡ | 63 (1.78) |
Values are number (%).
*There was no difference in the incidence of CRC between the groups during screening.
†Incidence was higher in group 2 compared with group 1 (p<0.001) and group 3 (p=0.013).
‡There was no significant difference in incidence comparing group 1 or group 1+2 and group 3.