Inadequate Boston Bowel Preparation Scale scores predict the risk of missed neoplasia on the next colonoscopy

Inadequate bowel preparation scores are associated with higher rates of polyps at subsequent colonoscopy, with detection rates of 10% for inadequate preparation versus 5% for adequate preparation.

• Among patients without polyps at the first colonoscopy, those with inadequate bowel preparation scores had a higher polyp detection rate at the second colonoscopy.
• For patients with polyps at the first colonoscopy, inadequate preparation scores were linked to higher rates of advanced polyps detected at the second colonoscopy.
• The presence of advanced polyps at the first colonoscopy significantly increased the risk of advanced polyps at the second colonoscopy.
• Inadequate bowel preparation scores did not show a significant association with the risk of advanced polyps in the second colonoscopy after adjustment for other factors.

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