Table 2 Characteristics of participants stratified by sex and age
Men < 55 years | Men 55–60 years | Men 60–65 years | Men > 65 years | Women < 55 years | Women 55–60 years | Women 60–65 years | Women > 65 years | |
|---|---|---|---|---|---|---|---|---|
Participation; % | 59.0 | 63.7 | 67.9 | 66.8 | 65.5 | 70.6 | 72.1 | 69.0 |
Colonoscopy compliance; % | 93.7 | 94.0 | 94.8 | 97.4 | 94.2 | 94.8 | 94.1 | 93.8 |
Total number of participantsa | 2415 | 2671 | 3238 | 2658 | 1775 | 1707 | 2009 | 1800 |
Colorectal cancer (CRC) | 84 | 155 | 216 | 238 | 72 | 82 | 87 | 98 |
μg Hb/g faeces; median (IQR) | 179.4 (56.8–536.2) | 230.8 (69.6–770.4) | 209.8 (70.2–682.5) | 231.2 (82.4–698.7) | 191.8 (77.9–542.9) | 172.8 (67.6–405.3) | 158 (63.2–490.4) | 172.8 (54.38–443.7) |
Location (proximal side/distal side/rectum)b; % | 19.8/69.7/10.5 | 18.3/64.7/17.0 | 17.4/79.5/3.1 | 17.3/66.4/16.3 | 20.8/65.4/13.8 | 22.6/66.7/10.7 | 20.9/64.3/15.1 | 23.2/60.6/16.2 |
Stage (I-II/III-IV/missing); % | 75.0/20.2/4.8 | 66.9/27.3/5.8 | 63.7/34.0/2.3 | 70.0/27.0/3.0 | 69.0/22.7/8.3 | 54.9/41.5/3.6 | 60.5/33.7/5.8 | 71.4/22.4/6.2 |
Size (cm); Mean (SD) | 2.5 ± 1.6 | 2.5 ± 1.6 | 2.7 ± 1.4 | 2.9 ± 1.5 | 2.9 ± 1.5 | 3.0 ± 1.6 | 2.6 ± 1.8 | 2.9 ± 1.7 |
Advanced adenomas (AA)c | 976 | 1250 | 1614 | 1348 | 461 | 498 | 553 | 516 |
μg Hb/g faeces; median (IQR) | 78.8 (34.8–223.0) | 78.8 (34.8–221.9) | 84.4 (35.4–248.4) | 75.8 (35.6–221.8) | 71.8 (33.4–183.4) | 70.2 (34.2–190.2) | 71.2 (30.0–186.2) | 75.6 (35.7–193.3) |
Location (proximal side/distal side/rectum)b; % | 19.4/66.2/14.4 | 24.3/65.1/10.6 | 17.3/69.4/13.3 | 19.3/68.9/11.8 | 23.5/57.8/18.7 | 18.4/66.5/15.1 | 19.1/69.2/11.7 | 19.5/61.2/19.3 |
Number polyps; median (IQR) | 3.0 (1–0-4.0) | 3.0 (2.0–5.0) | 3.0 (2.0–5.0) | 3.0 (2.0–5.0) | 2.0 (1.0–3.0) | 2.0 (1.0–3.0) | 2.0 (1.0–4.0) | 2.0 (1.0–4.0) |
Higher size polyps (mm); median (IQR) | 13.4 (7.5) | 13.7 (7.9) | 14.2 (8.5) | 13.8 (10.4) | 12.0 (9.7) | 13.4 (8.6) | 13.4 (8.4) | 12.9 (7.2) |
Size of AA >9 mm; % | 62.4 | 65.2 | 65.3 | 66.4 | 63.4 | 64.2 | 65.2 | 66.1 |
Size of AA >19 mm; % | 9.8 | 10.4 | 12.3 | 13.9 | 10.4 | 11.9 | 12.7 | 14.1 |
AA with villous component; % | 35.4 | 36.2 | 35.4 | 37.0 | 34.2 | 36.3 | 35.2 | 36.8 |
AA with severe/high-grade dysplasia; % | 8.0 | 7.8 | 8.5 | 9.0 | 7.4 | 7.8 | 8.2 | 8.9 |