Reliability and validity of survey data on physical health.
D000328:Adult; D000367:Age Factors; D000368:Aged; D002140:California; D002908:Chronic Disease; D005260:Female; D006262:Health; D006306:Health Surveys; D006801:Humans; D008297:Male; D008499:Medical Records; D008875:Middle Aged; D011177:Postal Service; D012494:Sampling Studies; D012737:Sex Factors; D013223:Statistics as Topic; D011795:Surveys and Questionnaires