Sigmoidoscopy and colonoscopy are exams in which a tube is inserted
in the rectum to view the colon for signs of cancer or other health
problems. Have you ever had either of these exams?

Response Unweighted Frequency Weighted Percentage Standard Error Lower 95% Confidence
Upper 95% Confidence
Yes 3846 64.1 0.7 62.7 65.6
No 1983 35.9 0.7 34.4 37.3

Among respondents ages 50 years and older, excluding unknowns and refusals.