Managed care and the delivery of primary care to the elderly and the chronically ill.

To analyze primary care staffing in HMOs and to review the literature on primary care organization and performance in managed care organizations, with an emphasis on the delivery of primary care to the elderly and chronically ill.Analysis of primary care staffing: InterStudy HMO census data on primary care (n = 1,956) and specialist (n = 1,777) physician staffing levels from 1991 through 1995. Primary care organization and performance for the...