For a SIGMOIDOSCOPY, a flexible tube is inserted into the rectum to look for problems.
A COLONOSCOPY is similar, but uses a longer tube, and you are usually given
medication through a needle in your arm to make you sleepy and
told to have someone else drive you home after the test.
Was your MOST RECENT exam a sigmoidoscopy or a colonoscopy?

Response Unweighted Frequency Weighted Percentage Standard Error 95% Confidence Limit
Lower Upper
Sigmoidoscopy 180 3.0 0.3 2.5 3.5
Colonoscopy 5574 97.0 0.3 96.5 97.5

Among respondents aged 50 years and older who ever had a
sigmoidoscopy or colonoscopy, excluding unknowns and refusals.