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- Title
A comparison of 9‐min colonoscopy withdrawal time and 6‐min colonoscopy withdrawal time: A systematic review and meta‐analysis.
- Authors
Bhurwal, Abhishek; Rattan, Puru; Sarkar, Avik; Patel, Anish; Haroon, Shahid; Gjeorgjievski, Mihajlo; Bansal, Vikas; Mutneja, Hemant
- Abstract
Introduction: The optimal colonoscopy withdrawal time is still a controversial topic. While several studies demonstrate that longer withdrawal time improves adenoma detection rate, others have contradicted these findings. Methods: Three independent reviewers performed a comprehensive review of all original articles published from inception to January 2021 and included studies reporting comparison of the two cohorts—(i) ≥ 6 but less than 9 min of colonoscopy withdrawal time (CWT) and (ii) ≥ 9 min of CWT. The outcome measures were the following: (i) adenoma detection rate (ADR), (ii) advanced ADR, and (iii) sessile serrated adenoma detection rate (SDR). The meta‐analysis was performed, and the statistics were two‐tailed. Results: A total of seven studies met the inclusion criteria after a thorough search of the literature was completed. The analysis revealed that ≥ 9 min of CWT had significantly higher odds of adenoma detection as compared with 6–9 min of CWT (odds ratio [OR] 1.54, 95% confidence interval [CI] 1.30–1.82; I2 = 93.7). Additionally, a significantly higher odds of sessile serrated adenoma detection (OR 1.68, 95% CI 1.28–2.22; I2 = 0) and a trend towards higher odds of advanced adenoma detection (OR 1.38, 95% CI 0.98–1.95, I2 = 90) were seen with CWT of at least 9 min when compared with 6–9 min of CWT. Conclusion: This systematic review and meta‐analysis analysis provides further evidence that at least 9 min of CWT cohort had significantly higher ADR and SDR as compared with the at least 6 min but less than 9 min of cohort.
- Subjects
ADENOMA; COLONOSCOPY; ODDS ratio; CONFIDENCE intervals
- Publication
Journal of Gastroenterology & Hepatology, 2021, Vol 36, Issue 12, p3260
- ISSN
0815-9319
- Publication type
Article
- DOI
10.1111/jgh.15701