Patterns of utilization. The patient perspective.
D003669:Deductibles and Coinsurance; D003710:Demography; D013502:General Surgery / Q000706:statistics & numerical data; D006279:Health Maintenance Organizations; D006296:Health Services / Q000706:statistics & numerical data*; D006301:Health Services Needs and Demand; D006302:Health Services Research; D006304:Health Status; D006761:Hospitals / Q000706:statistics & numerical data; D006801:Humans; D007348:Insurance, Health; D010820:Physicians / Q000600:supply & distribution; D011314:Preventive Health Services / Q000706:statistics & numerical data; D014481:United States