Quality measurement in medicaid managed care and fee-for-service: the New York State experience.

New York State has transitioned 1.7 million Medicaid recipients from a fee-for-service delivery system to a managed care model. To evaluate whether managed care has had a positive effect on access and quality, the New York State Department of Health compared rates of performance across standardized measures of quality (ie, childhood immunization, well-child visits, prenatal care in the first trimester, cervical cancer screening, use of appropriate medications for people with asthma, and comprehensive diabetes care) in both systems. For almost all measures, Medicaid managed care rates were statistically higher than Medicaid fee-for-service.