Procedure volume influences adherence to celiac disease guidelines

Area of Science:

• Gastroenterology
• Medical Diagnostics
• Public Health

Background:

• Celiac disease affects nearly 1% of the US population, yet most cases remain undiagnosed.
• Low adherence to submitting at least four duodenal biopsy specimens is a key factor in underdiagnosis.
• Understanding physician and practice characteristics influencing adherence is crucial for improving diagnosis.

Purpose of the Study:

• To investigate the association between physician and practice characteristics and adherence to duodenal biopsy guidelines.
• To identify factors that may improve or hinder the submission of adequate specimens for celiac disease diagnosis.

Main Methods:

• Utilized a national pathology database of adult duodenal biopsies from 2006-2009.
• Employed hierarchical modeling to analyze the impact of procedure volume, gastroenterologists per suite, and per capita density on adherence.
• Included 92,580 patient cases from 669 gastroenterologists across 191 zip codes.

Main Results:

• Higher procedure volume correlated with decreased adherence to biopsy guidelines (OR 0.92 per 100 procedures).
• Increased adherence was observed in suites with more gastroenterologists (OR 1.08 per additional gastroenterologist).
• Gastroenterologist density per capita in a practice's zip code did not significantly impact adherence.

Conclusions:

• High-volume physicians show lower adherence, potentially due to time constraints for submitting multiple specimens.
• Collaborative practice environments (more endoscopists per suite) may foster better adherence, possibly through peer education.
• Optimizing practice structures could enhance diagnostic rates for celiac disease.