. Author manuscript; available in PMC: 2020 Feb 24.

Published in final edited form as: J Clin Gastroenterol. 2015 Apr;49(4):313–319. doi: 10.1097/MCG.0000000000000270

TABLE 3.

Adenoma Detection Rate and Adenomas Per Colonoscopy

	Excellent (n = 2001)	Good (n = 3112)	Multivariable Poisson and Logistic Regression
	Excellent (n = 2001)	Good (n = 3112)	OR^*/IRR^†	CI	P
Any adenoma [n (%)]^‡
No	1482 (74)	2213 (71)
Yes	519 (26)	899 (29)	0.97^*	0.85, 1.11	0.618
No. adenomas [n (%)]^§
0	1482 (74)	2213 (71)
1	327 (16)	557 (18)
≥ 2	192 (9.6)	342 (11)
Adenomas per colonoscopy (mean + SD)^∥	0.437 ± 0.96	0.499 ± 1.04	0.98^†	0.90, 1.07	0.705

OR, odds ratio.

^†

IRR, incidence rate ratio.

^‡

Any adenoma = patients with at least 1 adenoma per colonoscopy; logistic regression.

^§

Number of adenomas = gross number of adenomas.

^∥

Adenomas per colonoscopy = number of adenomas/number of colonoscopies; multivariable Poisson.

CI indicates confidence interval; IRR, incidence rate ratio; OR, odds ratio.