For a SIGMOIDOSCOPY, a flexiable tube is inserted into the rectum to look
for problems. A COLONOSCOPY is similar, but uses a longer tube, and you
are ususally 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 Lower 95% Confidence
Upper 95% Confidence
Sigmoidoscopy 229 5.6 0.4 4.8 6.4
Colonoscopy 3557 94.4 0.4 93.6 95.2

Among respondents ages 50 years and older who reported ever having a
sigmoidoscopy or colonoscopy, excluding unknowns and refusals.