Table 2 The Results of Preliminary Screening and Colonoscopy Examination by Age Group
| Â | Participants for preliminary screening | Participants undertaking colonoscopy examination | ||||||
|---|---|---|---|---|---|---|---|---|
| Â | Total participants | HRFQ positive (%) | FIT positive (%) | High-risk participants (%) | Total number | Cases of nonadvanced adenoma (%) | Cases of advanced adenoma (%) | Cases of CRC (%) |
40–44 | 74,832 | 839 (1.1) | 765 (1.0) | 1456 (1.9) | 467 | 116 (24.8) | 11 (2.4) | 2 (0.4) |
45–49 | 384,721 | 5830 (1.5) | 4442 (1.2) | 9521 (2.5) | 2393 | 628 (26.2) | 43 (1.8) | 5 (0.2) |
50–54 | 600,919 | 12,758 (2.1) | 8504 (1.4) | 19,817 (3.3) | 4793 | 1524 (31.8) | 163 (3.4) | 22 (0.5) |
55–59 | 732,385 | 22,252 (3.0) | 13,586 (1.9) | 33,446 (4.6) | 9007 | 3244 (36.0) | 357 (4.0) | 79 (0.9) |
60–64 | 735,745 | 27,682 (3.8) | 17,426 (2.4) | 41,960 (5.7) | 12,095 | 4626 (38.2) | 686 (5.7) | 143 (1.2) |
65–69 | 866,164 | 37,269 (4.3) | 23,042 (2.7) | 56,502 (6.5) | 15,727 | 6308 (40.1) | 958 (6.1) | 290 (1.8) |
70–75 | 723,131 | 37,031 (5.1) | 20,694 (2.9) | 54,462 (7.5) | 13,489 | 5382 (39.9) | 991 (7.3) | 322 (2.4) |
Overall | 4,117,897 | 143,661 (3.5) | 88,459 (2.1) | 217,164 (5.3) | 57,971 | 21,828 (37.7) | 3209 (5.5) | 863 (1.5) |
P for trend |  |  < 0.001 |  < 0.001 |  < 0.001 |  |  < 0.001 |  < 0.001 |  < 0.001 |