ArticleAnnals of coloproctology2023
Longer withdrawal time is not associated with increased patient discomfort in colonoscopy: a retrospective observational study.
Article in Annals of coloproctology, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
3 citing papers in PubMed, 2 citations in OpenAlex.
- Association Between Colonoscopy Withdrawal Time and Adenoma Detection: Evidence of a Continuous Dose-Response Relationship.Diagnostics (Basel, Switzerland) · 2026Article
- Impact of withdrawal time on the adenoma detection rate in elderly patients during unsedated colonoscopy: a retrospective multicenter study.BMC gastroenterology · 2025Article
- Association between Examination Time and Discomfort in Unsedated Esophagogastroduodenoscopy: A Prospective Observational Study.GE Portuguese journal of gastroenterologyArticle
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Authors and funding
2 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
purposeWithdrawal time of sufficient length is a quality indicator for colonoscopies. Nonetheless, whether extending the withdrawal time contributes to patient discomfort remains unknown. This study aimed to clarify the relationship between colonoscopy withdrawal time and patient discomfort.
methodsA cohort of consecutive patients who underwent colonoscopy at a single institution from October 2018 to January 2020 was retrospectively analyzed. Initially, the relationship between the mean withdrawal time for each colonoscopist in no-finding examinations and polyp detection rate was investigated in 2,043 patients. Subsequently, the primary outcome of association between withdrawal time and patient discomfort, as determined by patient questionnaire, was assessed for each examination in 481 patients from the initial cohort.
resultsThe mean withdrawal time was strongly correlated with polyp detection rate (correlation coefficient, 0.72; P<0.001). In contrast, longer withdrawal time was not associated with increased discomfort; however, there was a weak inverse correlation between patient discomfort and longer withdrawal time (correlation coefficient, -0.25; P<0.001). Similarly, multiple regression analysis adjusted for confounding variables revealed that longer withdrawal time was not associated with increased patient discomfort (regression coefficient, -0.04 for each 1-minute increase in the length of withdrawal time; P=0.45).
conclusionThis study showed for the first time that longer withdrawal times did not result in increased discomfort, indicating that withdrawal time can be extended to sufficient length for optimal patient examination and polyp detection.
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