TABLE 4.

Colonoscopy cecal intubation rates

Study	Study design	Clinician specialty*	Patients/procedures, n	Cecal intubation rate (%)
Pierzchajlo et al (11); Setting: Two hospitals	Prospective	Family physician (n=1)	751 colonoscopies	91.5
Wexner et al (12); Setting: Two hospitals	Retrospective	Surgeons (n=4)	2069 colonoscopies	96.5
Wexner et al (13); Setting: Two hospitals	Prospective	Gastroenterologists (n=207)	13,580 colonoscopies	92.0
Kirby (14); Setting: Single hospital	Retrospective	Surgeon (n=1)	616 colonoscopies	76.0†
Edwards and Norris (15); Setting: Single hospital	Prospective	Family physicians (n=4)	200 colonoscopies	96.5
Minoli et al (17); Setting: Four endoscopy units	Prospective	Gastroenterologists	486 colonoscopies	91.1
Nelson et al (18); Setting: 13 VA Medical Centers	Prospective	Gastroenterologists	3196 screening colonoscopies	97.2
Chak et al (26); Setting: Single teaching hospital	Prospective	Gastroenterologists (n=17)	496 colonoscopies	94.3
Rex (27); Setting: Single teaching hospital	Prospective	Gastroenterologist (n=1)	358 patients	99.2
Fasoli et al (28); Setting: Multicentre (25 sites)	Prospective	Gastroenterologist teams (n=1), Surgeon teams (n=18), Mixed teams (n=21)	1406 colonoscopies	84.1
Ball et al (29); Setting: Single teaching hospital	Retrospective	Gastroenterologists, surgeons	1166 colonoscopies	88.1
Denis et al (30); Setting: Single hospital	Prospective	Gastroenterologists (n=5)	500 colonoscopies	92.0
Harewood (31); Setting: Single teaching hospital	Retrospective	Endoscopists (n=45)	17,100 colonoscopies	93.9
Regula et al (60); Setting: A national screening program in Poland (6 to 40 sites at study end)	Prospective	Not specified	50,148 colonoscopies	91.1

^*Unless shown, the number of persons performing the procedure was not reported in the paper;

^†Unweighted 12-year mean. VA Veterans affairs