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The relative importance of the determinants of physician utilization was examined using data obtained from a community health survey of 2,168 households in five New York and Pennsylvania counties. Eighteen variables, including individual and organizational attributes, were selected to determine the causal ordering of these variables in predicting use of physicians' services. It wasfound that the needfor care, average cost per visit, health insurance coverage, and age have strong direct effects on physician utilization. The other variables had either an indirect or a negligible influence. The path analysis employed in this study reveals the great potential contribution ofsociological methods in health services research.
Wan et al. (Sat,) studied this question.