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) 310 34.9 1.8 31.5 38.4
Within the past 2 years (1 year but less than 2 years ago) 205 22.4 1.5 19.5 25.4
Within the past 5 years (2 years but less than 5 years ago) 225 23.5 1.5 20.6 26.5
Within the past 10 years (5 years but less than 10 years ago) 88 9.6 1.1 7.5 11.8
10 or more years ago 90 9.5 1.0 7.4 11.5

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