HMO performance: the recent evidence.
D000553:Ambulatory Care; D001291:Attitude of Health Personnel; D001294:Attitude to Health; D003258:Consumer Behavior; D003365:Costs and Cost Analysis; D003695:Delivery of Health Care; D004470:Economics, Medical; D006123:Group Practice; D005102:Health Expenditures; D006279:Health Maintenance Organizations; D006285:Health Planning; D006761:Hospitals / Q000706:statistics & numerical data; D006801:Humans; D007348:Insurance, Health; D011787:Quality of Health Care; D012955:Societies, Medical; D014481:United States; D014600:Utilization Review