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08.10.2019

Training interventions to improve adenoma detection rates during colonoscopy: a systematic review and meta-analysis

Zeitschrift:
Surgical Endoscopy
Autoren:
Stephanie Lim, Sydney Hammond, Jason Park, David Hochman, Mê-Linh Lê, Rasheda Rabbani, Ahmed Abou-Setta, Ryan Zarychanski
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Abstract

Background

Colonoscopies are effective means of detecting and removing precancerous adenomatous polyps. The adenoma detection rate (ADR) is a marker of colonoscopy quality and an independent predictor of colorectal cancer incidence. Focused training interventions may improve an endoscopist’s ADR, but the supporting research is limited. This systematic review and meta-analysis identified, critically appraised, and meta-analyzed data from randomized trials (RCTs) evaluating the effect of training interventions on ADRs.

Methods

Ovid Medline, EMBASE, CENTRAL, Eric, CINAHL, Scopus, Web of Science, and ClinicalTrials.gov were searched for RCTs investigating the effect of an educational intervention on ADRs. Two reviewers independently screened, identified, and extracted trial-level data. Internal validity was assessed in duplicate using the Risk of Bias tool. Our primary outcome was the ADR. Secondary outcomes were advanced ADR, adenocarcinoma detection rate, polyp detection rate, and withdrawal times. Safety outcomes were post-polypectomy bleeding rate and colonoscopy-related perforation rate.

Results

From 2837 screened citations, we identified 3 trials (119 endoscopists) meeting our inclusion criteria. Training interventions were associated with a trend toward increased ADRs (odds ratio 1.16, 95% confidence interval (CI) 1.00–1.34; I2 83%; 3 trials; 119 endoscopists). When limited to screening colonoscopies, the odds ratio for ADRs associated with training interventions was 1.17 (95% CI 1.00–1.36; I2 80%; 3 trials; 119 endoscopists). There was a high level of heterogeneity between the trials’ training interventions. Training intervention improved the advanced ADR, adenocarcinoma detection rate, polyp detection rate, and withdrawal times. Safety outcomes were not reported.

Conclusions

A focused training intervention was associated with a strong trend toward increased ADRs among certified endoscopists. While the described training interventions definitely show promise, further efforts around continuing professional developments activities are needed to more consistently improve ADRS among certified endoscopists.

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