The Factors Affecting ADR of Screening Colonoscopy

Comprehensive Analysis of Multilevel Factors Affecting Adenoma Detection Rates of Screening Colonoscopy

The purpose of this study is to assess the impact of multilevel factors on the quality of screening colonoscopy, reflected mainly by adenoma detection rate (ADR).

The subjects will include patients who need to screening colonoscopies by 21 endoscopists between January 2019 and December 2019 were retrospectively enrolled in this unit. Multilevel factors, including patient-, proceduralist-, and procedure-level characteristics were analyzed for the relationship with ADR.

Inclusion Criteria:

• Patients were retrospectively included in this study if they had undergone a completed colonoscopy.

Exclusion Criteria:

• prior colonoscopy within 3 years;
• medical history of inflammatory bowel disease (IBD), CRC, or abdominal surgery;
• fair or poor quality of bowel preparation (fair quality: some semisolid stool that could be suctioned or washed away but >90% of mucosal surface seen; poor quality: semisolid stool that could not be suctioned or washed away with <90% of mucosal surface seen);
• failure in cecal intubation;
• withdrawal time without removing<6 min.