Abstract
Adenoma detection rate is an important measure of colonoscopy quality; however, factors including procedure order that contribute to adenoma detection are incompletely understood. The aim of this study was to prospectively evaluate factors associated with adenoma detection rate. Prospective cohort study. Data were collected on patient and physician characteristics, trainee participation, time of day, and case rank. Outpatient tertiary-care center. This study involved consecutive patients presenting for first screening colonoscopies. Adenoma and polyp detection rates (proportion of cases with one or more lesion detected) and ratios (mean number of lesions detected per case). A total of 2139 colonoscopies were performed by 32 gastroenterologists. Detection rates were 42.7% for all polyps, 25.4% for adenomas, and 5.0% for advanced adenomas. Adenoma detection was associated with male sex and increasing age on multivariate analysis. In the overall study cohort, time of day and case rank were not significantly associated with detection rates. In post hoc analysis, polyp and adenoma detection rates appeared lower after the fifth case of the day for endoscopists with low volumes of cases and after the tenth case of the day for endoscop...Continue Reading
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