Effect of participatory insurance on hosital utilization.
D000367:Age Factors; D003669:Deductibles and Coinsurance; D006760:Hospitalization; D006761:Hospitals / Q000706:statistics & numerical data*; D007350:Insurance, Hospitalization; D007902:Length of Stay; D010414:Pennsylvania; D012189:Retrospective Studies; D012737:Sex Factors