How long has it been since you had your last sigmoidoscopy or colonoscopy?

Response Unweighted Frequency Weighted Percentage Standard Error Lower 95% Confidence
Limit
Upper 95% Confidence
Limit
Within the past year (anytime less than 12 months ago) 963 30.9 0.9 29.1 32.6
Within the past 2 years (1 year but less than 2 years ago) 683 22.0 0.8 20.4 23.7
Within the past 3 years (2 years but less than 3 years ago) 546 17.0 0.7 15.6 18.4
Within the past 5 years (3 years but less than 5 years ago) 615 19.4 0.8 17.9 20.9
Within the past 10 years (5 years but less than 10 years ago) 358 10.7 0.6 9.5 11.8

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