Gender plays big role in use of preventive services.
D000293:Adolescent; D000328:Adult; D000368:Aged; D003625:Data Collection; D005260:Female; D006304:Health Status; D006801:Humans; D008297:Male; D008875:Middle Aged; D010342:Patient Acceptance of Health Care / Q000523:psychology* / Q000706:statistics & numerical data; D011314:Preventive Health Services / Q000706:statistics & numerical data*; D012647:Self-Assessment; D012737:Sex Factors; D014481:United States