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
Limit		 Upper 95% Confidence
Limit
Yes 2127 49.6 0.8 47.9 51.2
No 2137 50.4 0.8 48.8 52.1

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