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20.06.2020 | Original Article | Ausgabe 11/2020

Digestive Diseases and Sciences 11/2020

Patient and Physician Factors Associated with Adenoma and Sessile Serrated Lesion Detection Rates

Zeitschrift:
Digestive Diseases and Sciences > Ausgabe 11/2020
Autoren:
Margaret J. Zhou, Benjamin Lebwohl, Anna Krigel
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Abstract

Background and Aims

Sessile serrated lesions (SSLs) have been increasingly recognized as precursors to colorectal cancer. Unlike adenoma detection rate (ADR), there is currently no agreed-upon benchmark for SSL detection rate (SSLDR), and data on factors that impact SSL detection are limited. We aimed to identify patient, endoscopist, and procedural factors associated with SSL and adenoma detection.

Methods

We used a single-center electronic endoscopy database to identify all patients ages ≥ 50 years who underwent outpatient screening colonoscopy from January 1, 2012, to June 30, 2018. Univariable Chi-square analysis was used to determine patient, endoscopist, and procedure-related factors associated with SSL or adenoma detection. We used logistic regression with generalized estimating equations, accounting for clustering by individual endoscopist, to determine factors independently associated with ADR and SSLDR.

Results

We identified 10,538 unique patients who underwent colonoscopy performed by 28 endoscopists. Overall SSLDR was 2.2%, and overall ADR was 29.1%. On multivariable analysis, patient age, sex, BMI, smoking, endoscopist withdrawal time, and year of colonoscopy were independent predictors of ADR. Smoking and year of colonoscopy were independent predictors of SSLDR. Sub-optimal bowel preparation was inversely associated with SSL detection but not ADR.

Conclusions

In this large study of patients undergoing average-risk screening colonoscopy, overall SSLDR was low, indicating that methods for increasing SSLDR are needed. Our findings suggest that endoscopists may take into account risk factors for SSLs, such as smoking history, and recognize that the detection of such lesions, even more so than for adenomas, is dependent on optimal bowel preparation.

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