title: Transportation brokerage services and Medicaid beneficiaries' access to care.
abstract: OBJECTIVE
  To examine the effect of capitated transportation brokerage services on Medicaid beneficiaries' access to care and expenditures.
  
  
  METHODS
  The study period from 1996 to 1999 corresponds to the period of a natural experiment during which Georgia and Kentucky implemented transportation brokerage services. Effects were estimated for asthmatic children and diabetic adults.
  
  
  METHODS
  We used difference-in-differences models to assess the effects of transportation brokerage services on access to care, measured by Medicaid expenditures and health services use. The study design is strengthened by the staggered implementation dates between states and within each state.
  
  
  RESULTS
  For asthmatic children, transportation brokerage services increased nonemergency transportation expenditures and the likelihood of using any services; reductions in monthly expenditures more than offsetting the increased transportation costs. For diabetic adults, nonemergency transportation costs decreased despite increased monthly use of health services; average monthly medical expenditures and the likelihood of hospital admission for an ambulatory care-sensitive condition (ACSC) also decreased.
  
  
  CONCLUSIONS
  The shift to transportation brokerage services improved access to care among Medicaid beneficiaries and decreased the expenditures. The increase in access combined with reduced hospitalizations for asthmatic children and ACSC admissions for diabetic adults are suggestive of improvements in health outcomes.
authors.affiliation: Department of Hospital Management, Konyang University, 119 Daehangro, Nonsan 320-711, Korea. jkim@konyang.ac.kr
authors.forename: Jinkyung
authors.initials: J
authors.lastname: Kim
authors.forename: Edward C
authors.initials: EC
authors.lastname: Norton
authors.forename: Sally C
authors.initials: SC
authors.lastname: Stearns
mesh_terms: D000328:Adult; D001249:Asthma / Q000628:therapy*; D002648:Child; D003920:Diabetes Mellitus / Q000628:therapy*; D005845:Georgia; D006297:Health Services Accessibility; D006801:Humans; D007629:Kentucky; D016014:Linear Models; D008484:Medicaid / Q000191:economics*; D014187:Transportation of Patients / Q000191:economics*; D014481:United States