Multiphasic checkup evaluation study. 1. Methods and population.
D000328:Adult; D000367:Age Factors; D001294:Attitude to Health; D002140:California; D003695:Delivery of Health Care; D005069:Evaluation Studies as Topic; D005260:Female; D006306:Health Surveys; D006801:Humans; D007354:Insurance, Major Medical; D008297:Male; D008875:Middle Aged; D009098:Multiphasic Screening / Q000592:standards*; D011159:Population Surveillance; D011314:Preventive Health Services / Q000592:standards*; D012111:Residence Characteristics; D012737:Sex Factors; D012959:Socioeconomic Factors