The extent of role differentiation among hospitals.
D000704:Analysis of Variance; D003710:Demography; D006760:Hospitalization; D006761:Hospitals / Q000706:statistics & numerical data*; D006769:Hospitals, General; D006782:Hospitals, Special; D006784:Hospitals, Teaching; D010414:Pennsylvania; D012111:Residence Characteristics; D013223:Statistics as Topic; D014600:Utilization Review