Risk factors for inadequate bowel preparation: A retrospective study of 7931 paired colonoscopy cases with a predictive model

doi:10.4253/wjge.122582

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World Journal of Gastrointestinal Endoscopy

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1948-5190

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Baishideng Publishing Group Inc, 7041 Koll Center Parkway, Suite 160, Pleasanton, CA 94566, USA

Retrospective Study

Copyright: ©Author(s) 2026. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial (CC BY-NC 4.0) license. No commercial re-use. See permissions. Published by Baishideng Publishing Group Inc.

World J Gastrointest Endosc. Jul 16, 2026; 18(7): 122582
Published online Jul 16, 2026. doi: 10.4253/wjge.122582

Table 2 Multivariate analysis of risk factors for inadequate bowel preparation

Variable	OR	95%CI	P value	VIF
Age (per 1-year increase)	1.016	1.011-1.022	< 0.001	1.20
Male sex	1.447	1.262-1.660	< 0.001	1.05
Afternoon examination	1.566	1.364-1.799	< 0.001	1.04
Hypertension	1.051	0.839-1.316	0.664	1.32
Diabetes mellitus	1.736	1.358-2.219	< 0.001	1.28
Constipation	1.814	1.071-3.005	0.025	1.06
Prior inadequate preparation	3.526	3.083-4.034	< 0.001	1.10
Inpatient status	0.391	0.357-0.427	< 0.001	1.35

OR: Odds ratio; CI: Confidence interval; VIF: Variance inflation factor.

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Citation: Xiong HB, Cao QX, Deng W, Zhou HG, Lai XT, Zhang QQ, Li J. Risk factors for inadequate bowel preparation: A retrospective study of 7931 paired colonoscopy cases with a predictive model. World J Gastrointest Endosc 2026; 18(7): 122582
URL: https://www.wjgnet.com/1948-5190/full/v18/i7/122582.htm
DOI: https://dx.doi.org/10.4253/wjge.122582

Xiong HB, Cao QX, Deng W, Zhou HG, Lai XT, Zhang QQ, Li J. Risk factors for inadequate bowel preparation: A retrospective study of 7931 paired colonoscopy cases with a predictive model. World J Gastrointest Endosc 2026; 18(7): 122582 [DOI: 10.4253/wjge.122582]

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