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Table 1 Patient characteristics by city

From: Endoscopist specialty is associated with colonoscopy quality

  Montreal Calgary
Patient Characteristic N (%) N (%)
Age, mean (sd) 60.1 (7.1) 59.7 (6.9)
Male 1059 (50.1) 248 (46.1)
Family history of CRCa 500 (23.6) 134 (24.9)
Colonoscopy in the past 10 years 988 (46.8) 189 (35.1)
Screeningb 855 (40.5) 208 (38.7)
History of gastrointestinal conditionsc 583 (27.6) 143 (26.6)
Large bowel symptoms in the past 6 monthsd 840 (39.8) 211 (39.2)
Total 2113 538
  1. a CRC: colorectal cancer.
  2. b Screening was defined as no history of gastrointestinal conditions and no large bowel symptoms in the past 6 months.
  3. c History of gastrointestinal conditions includes polyp, CRC diagnosis, inflammatory bowel disease, and previous bowel surgery.
  4. d Large bowel symptoms include rectal bleeding, unintentional weight loss, abdominal pain in the past 6 months.