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. Author manuscript; available in PMC: 2017 Jul 20.
Published in final edited form as: Gastroenterology. 2012 Oct 3;144(1):81–91. doi: 10.1053/j.gastro.2012.09.054

Table 1.

Characteristics of Participants, Study Colonoscopies, and Study Polyps

Ex vivo phase In vivo phase
Participants, n 14 12
Endoscopy practice experience (y), median (interquartile range) 16 (7–22) 12 (6–21)
Colonoscopy volume per year, median (interquartile range) 922 (839–1056) 901 (803–1105)
Adenoma detection rate, median (interquartile range) 34% (29%–37%) 35% (30%–38%)
Study colonoscopies, n 1673
 With 1 polyp 1107 (66%)
 With 2 polyps 355 (21%)
 With 3 polyps 116 (7%)
 With >3 polyps 95 (6%)
Study colonoscopies per endoscopist, median (interquartile range) 121 (53–180)
Study polyps, na 2596
 Diminutive polyps (≤5 mm) 1858 (72%)
 Small polyps (6–9 mm) 547 (21%)
 Large polyps (≥10 mm) 177 (7%)
Study polyps per endoscopist, median (interquartile range) 174 (96–278)
 Diminutive polyps (≤5 mm) 135 (59–200)
 Small polyps (6–9 mm) 29 (18–83)
 Large polyps (≥10 mm) 9 (4–15)
a

Adenomas accounted for 62% of diminutive, 72% of small, and 78% of large polyps.