The effect of non-response on risk ratios in a cardiovascular disease study.
D000328:Adult; D000367:Age Factors; D000368:Aged; D001294:Attitude to Health; D002140:California; D002318:Cardiovascular Diseases / Q000453:epidemiology*; D005069:Evaluation Studies as Topic; D005260:Female; D006801:Humans; D006949:Hyperlipidemias / Q000453:epidemiology; D006973:Hypertension / Q000453:epidemiology; D008297:Male; D008875:Middle Aged; D012306:Risk; D012907:Smoking