Obstetric care in a health maintenance organization and a private fee-for-service practice: a comparative analysis.

This study compares the quality of obstetric care provided for patients in two distinct groups: a federally-qualified health maintenance organization and a private fee-for-service practice. Patients of both groups were delivered in the same hospital with resident coverage equally accessible to both groups. From January, 1979, through December, 1981, the period of the study, the physician group delivered 2385 patients, 57% of them from the health maintenance organization and 43% from the fee-for-service practice. Not only were comparisons of maternal and fetal outcomes available for the two patient groups, but the yearly trends and individual performances of the physicians were available as well. This paper addresses the question, all other things being equal, is the level of care and ultimate outcome the same for both groups of patients? The results in some instances showed surprising differences.