Variations in cataract extraction rates in Medicare prepaid and fee-for-service settings.
Shingleton
B
B
D000368:Aged; D002387:Cataract Extraction / Q000191:economics / Q000706:statistics & numerical data*; D003430:Cross-Sectional Studies; D018588:Fee-for-Service Plans / Q000706:statistics & numerical data; D005260:Female; D006279:Health Maintenance Organizations; D006801:Humans; D008297:Male; D006278:Medicare / Q000191:economics*; D012189:Retrospective Studies; D014481:United States