Time of day variation in polyp detection rate for colonoscopies performed on a 3-hour shift schedule

Adenoma detection rates vary minimally with time of day and case rank: a prospective study of 2139 first screening colonoscopies

“…This is in contrast to other recent studies, 30,31,34,35 which have reported significant associations between polyp or adenoma detection ratios and time of day or case rank. Consistent with prior studies, however, complete colonoscopy, male sex, and increasing patient age were all found to be associated with increased risk of adenoma detection, 32,34,37,38 and the rate of polyp, adenoma, and cancer detection was within the range expected for this population. 39 We believe that these findings likely reflect the difference in our study design compared with those of past studies, in that these data were collected prospectively, polyp histology was recorded, and the patient population was limited to individuals presenting for their initial screening colonoscopies.…”

“…[30][31][32][33][34][35] With one notable exception, 34 most studies have reported an inverse association between later time and/or queue position and polyp detection rate. 30,31,35 However, existing data have multiple limitations, including retrospective design, [31][32][33][34][35] failure to evaluate polyp detection rate, 32,33 mixing of adenomas and hyperplasic polyps, 30,34,35 or use of mixed indications for colonoscopy. 30,31,35 The aim of this study was to address the limitations of available data by prospectively evaluating factors associated with adenoma detection rate in a population of asymptomatic individuals presenting for their first screening colonoscopies.…”

The effect of colonoscopy preparation quality on adenoma detection rates

“…Patient BMI similarly did not have an association with ADRs despite significant improvement in preparation. The literature is mixed on these associations [26][27][28][29] as well as the association between BMI and preparation quality. [29][30][31] This study has several limitations.…”

Is production pressure jeopardizing the quality of colonoscopy? A survey of U.S. endoscopists' practices and perceptions

“…The hypothesis that physician fatigue influences adenoma detection rates is supported by 3 studies demonstrating that limiting endoscopists to half-day blocks improves the quality of colonoscopy. 9,[25][26] Further research in this area is necessary to help resolve this issue because it has practical implications for procedure scheduling and physician productivity.…”