Hospitalizations in three competing HMOs during their first two years: a cohort study of the Rochester experience.
D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D054598:Blue Cross Blue Shield Insurance Plans / Q000706:statistics & numerical data*; D002648:Child; D002675:Child, Preschool; D003363:Cost Control; D006279:Health Maintenance Organizations / Q000706:statistics & numerical data*; D006761:Hospitals / Q000706:statistics & numerical data*; D006801:Humans; D007223:Infant; D007350:Insurance, Hospitalization / Q000706:statistics & numerical data*; D008875:Middle Aged; D009518:New York; D010343:Patient Admission