title: Quality of cardiac surgeons and managed care contracting practices.
abstract: OBJECTIVE
  To evaluate the association between contracting practices of managed care organizations (MCOs) with cardiac surgeons and the quality of the cardiac surgeons.
  
  
  METHODS
  The study included all cardiac surgeons offering coronary artery bypass graft (CABG) surgery and 78 percent of MCOs in New York State in 1998. Primary data: The MCOs' panel composition with respect to hospitals and cardiac surgeons. Secondary data: New York State (NYS) Cardiac Surgery Reports.
  
  
  METHODS
  Statistical analyses of the probability of a contract between cardiac surgeons and MCOs conditional on the surgeon's risk-adjusted mortality rates (RAMR), outlier and low volume status, and controlling for other confounding variables, were performed.
  
  
  RESULTS
  Contract probability exhibited a tendency to decrease with RAMR, low volume and low-quality outlier status and to increase with high-quality outlier status. These effects were statistically significant for RAMR and high-quality outliers in Downstate and for low volume in Downstate and Upstate.
  
  
  CONCLUSIONS
  In some, but not all cases, MCOs are seeking higher-quality providers. Further research is required to understand regional variability and the effect of market structure on the quality profile of MCOs.
authors.affiliation: University of Rochester Medical Center, NY 14642, USA.
authors.forename: Dana B
authors.initials: DB
authors.lastname: Mukamel
authors.forename: David L
authors.initials: DL
authors.lastname: Weimer
authors.forename: Jack
authors.initials: J
authors.lastname: Zwanziger
authors.forename: Alvin I
authors.initials: AI
authors.lastname: Mushlin
mesh_terms: D002983:Clinical Competence / Q000706:statistics & numerical data*; D003284:Contract Services / Q000592:standards*; D001026:Coronary Artery Bypass / Q000401:mortality / Q000592:standards; D006302:Health Services Research; D006801:Humans; D033181:Information Dissemination; D008329:Managed Care Programs / Q000458:organization & administration / Q000592:standards* / Q000706:statistics & numerical data; D017146:Models, Organizational; D009518:New York; D011336:Probability; D019984:Quality Indicators, Health Care; D013903:Thoracic Surgery / Q000458:organization & administration / Q000592:standards*; D000078329:Workforce