TableĀ 1

Documented reasons for conversion of 71 cases requested as colonoscopy to flexible sigmoidoscopy, in order of frequency

Reason for conversionn
Patient not taken full bowel preparation6
Colonoscopy not clinically indicated5
Patient discomfort4
Impassable stricture4
Poor bowel preparation encountered2
Patient choice2
Unable to cannulate and therefore sedate patient1
Anal pain1
No reason given45