Response rate and reasons for non-response in an epidemiological study - The Puerto Rico heart health program.
D001294:Attitude to Health; D005260:Female; D006285:Health Planning; D006306:Health Surveys; D006331:Heart Diseases / Q000453:epidemiology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D011647:Puerto Rico; D012424:Rural Population; D014505:Urban Population