The Day of the Week Does Not Affect the Adenoma Detection Rate

Background The role of operator fatigue on adenoma detection rate (ADR) is still controversial. The purpose of this study was to determine if fatigue towards the end of the week affects the ADR. A retrospective chart review of consecutive colonoscopies was done at a tertiary care teaching institution. Patients 45 years of age or older undergoing screening or surveillance colonoscopy from June 2007 to August 2010 were included in the study. A total of 3,085 patients were included in the study, with an overall 31 % ADR. ADR was between 31 and 32 % throughout the week, with no statistically significant variation (p = 0.8697). The total number of adenomas and advanced adenomas was also similar throughout the week (p = 0.8, p = 0.59, respectively). ADR is not influenced by the day of the week in which a colonoscopy is performed.