Trial results for a study focused on improving colonoscopy quality for Colorectal Cancer screening were posted on ClinicalTrials.gov on 2025-05-30, reporting mean adenoma detection rates ranging from 42.8% to 52.7% across different groups.
Background
Colorectal cancer (CRC) remains a significant public health concern, and screening colonoscopy is a cornerstone of its prevention and early detection. The quality of colonoscopy, particularly measured by the adenoma detection rate (ADR), directly impacts its effectiveness. A higher ADR indicates that endoscopists are more effectively identifying and removing precancerous polyps, which can reduce the incidence and mortality of CRC. Variability in colonoscopy quality among providers can lead to disparities in patient outcomes. Efforts to standardize and improve ADR are therefore crucial for enhancing CRC screening programs, especially within large healthcare systems like the VA, where significant variability has been observed.
Trial design
This completed study enrolled 445 participants to investigate conditions related to Colorectal Neoplasms. The trial focused on improving colonoscopy quality within the National VA Healthcare System. The study aimed to implement the VA Endoscopy Quality Improvement Program (VA-EQuIP), which involved centralized quality measurement and reporting for adenoma detection rates (ADR), bi-annual audit and feedback with provider benchmarking, and collaborative learning to enhance colonoscopy quality.
Key results
The trial reported key measurements related to provider adenoma detection rates and bowel preparation quality:
- Provider Adenoma Detection Rate (for All Colonoscopies):
- For Wedge 1, a mean of 52.7% (Standard Deviation 13.7%) was observed.
- For Wedge 2, a mean of 46.9% (Standard Deviation 12.4%) was observed.
- For Wedge 3, a mean of 43.5% (Standard Deviation 15.0%) was observed.
- For Wedge 4, a mean of 42.8% (Standard Deviation 18.2%) was observed.
- For Wedge 5, a mean of 45.6% (Standard Deviation 12.3%) was observed.
- A second set of measurements for Wedge 1 showed a mean of 50.9% (Standard Deviation 16.7%).
- For Wedge 2, a mean of 52.0% (Standard Deviation 12.6%) was observed.
- For Wedge 3, a mean of 46.2% (Standard Deviation 11.2%) was observed.
- For Wedge 4, a mean of 49.5% (Standard Deviation 14.3%) was observed.
- For Wedge 5, a mean of 50.9% (Standard Deviation 12.6%) was observed.
- Bowel Preparation Quality (Provider Level):
- For Wedge 1, 19 participants were counted.
- For Wedge 2, 21 participants were counted.
What this means
The posted results provide specific measurements for provider adenoma detection rates and bowel preparation quality across different groups or time points within the VA healthcare system. The reported mean ADRs, ranging from 42.8% to 52.7%, offer baseline or interim data points for assessing colonoscopy quality. These figures are crucial for understanding the current landscape of CRC screening quality and for evaluating the impact of quality improvement initiatives like the VA-EQuIP. While the data provides quantitative measures, no comparative analyses or statistical significance between the different wedges or over time were reported.
Source
The information regarding these trial results was obtained from ClinicalTrials.gov, a public database of clinical studies. The results for the study NCT04389957, titled "Improving Colonoscopy Quality for Colorectal Cancer Screening in the National VA Healthcare System", were posted on 2025-05-30 on clinicaltrials.gov.