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

Response Unweighted Frequency Weighted Percentage Standard Error 95% Confidence Limit
Lower Upper
Within the past year (anytime less than 12 months ago) 1182 21.2 0.6 20.0 22.4
Within the past 2 years (1 year but less than 2 years ago) 1008 17.9 0.6 16.7 19.0
Within the past 3 years (2 years but less than 3 years ago) 848 14.4 0.5 13.4 15.4
Within the past 5 years (3 years but less than 5 years ago) 1266 21.6 0.6 20.4 22.8
Within the past 10 years (5 years but less than 10 years ago) 1095 18.7 0.6 17.5 19.8
10 or more years ago 374 6.2 0.4 5.5 6.9

Among respondents aged 50 years and older who ever had a
sigmoidoscopy or colonoscopy, excluding unknowns and refusals.