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Table 1 Characteristics of participants studied

From: Population-based colorectal cancer screening programmes using a faecal immunochemical test: should faecal haemoglobin cut-offs differ by age and sex?

  Men Women
Participation; % 63.7 69.3
Colonoscopy compliance; % 95.0 94.2
Total number of participantsa 10,982 7291
Colorectal cancer (CRC) 693 339
Age (years); mean (SD) 61.4 (5.1) 60.2 (5.6)
μg Hb/g faeces; median (IQR) 219.0 (74.2–694.5)) 175.3 (63.8–440.8)
Location Location (proximal side/distal side/rectum)b; % 18.2/70.1/11.7 21.8/64.2/14.0
Stage (I-II/III-IV/missing); % 68.0/27.6/4.4 63.7/30.8/5.5
Size (cm); mean (SD) 2.7 (1.5) 2.8 (1.6)
Advanced adenomas (AA)c 5188 2028
Age (years); mean (SD) 60.1 (5.4) 59.8 (5.6)
μg Hb/g faeces; median (IQR) 79.2 (35.2–229.6) 71.6 (33.2–188.6)
Location Location (proximal side/distal side/rectum)b; % 20.1/67.4/12.5 20.1/63.7/16.2
Number polyps; median (IQR) 3.0 (2.0–5.0) 2.0 (1.0–4.0)
Higher size polyps (mm); median (IQR) 12.0 (9.0) 12.0 (8.0)
Size of AA >9 mm; % 65.1 65.1
Size of AA >19 mm; % 13.6 12.8
AA with villous component; % 36.2 36.3
AA with severe/high-grade dysplasia; % 8.6 8.7
  1. SD Standard deviation, IQR Interquartile range
  2. aPositives
  3. bRight side includes regions up to and including the splenic flexure; left side includes descending colon and up to rectum
  4. cAdvanced adenomas: adenomas ≥10 mm, adenoma with a villous component (i.e., tubulovillous or villous adenoma) or adenomas with severe/high-grade dysplasia