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 140 2.5 0.2 2.0 2.9
Colonoscopy 5197 97.5 0.2 97.1 98.0

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