title: Studies find wide variation in service utilization among Medicare risk, FFS patients.
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D002140:California; D002387:Cataract Extraction / Q000706:statistics & numerical data; D002561:Cerebrovascular Disorders / Q000628:therapy; D003625:Data Collection; D018588:Fee-for-Service Plans / Q000706:statistics & numerical data*; D005260:Female; D005431:Florida; D006279:Health Maintenance Organizations / Q000706:statistics & numerical data*; D006801:Humans; D008297:Male; D006278:Medicare / Q000458:organization & administration / Q000706:statistics & numerical data*; D017063:Outcome Assessment, Health Care; D014481:United States; D014600:Utilization Review