The Development of Dental Practice Profiles

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Abstract
This study examines the amount and sources of variation in dental practice profiles. Three years of insurance claims data on 227 general dental practices were used to generate practice-specific utilization rates for 16 treatment service categories. The results indicated considerable heterogeneity among and within practices in the distribution of service utilization rates such that most distributions could not be described by conventional parametric probability models. Basic standardization methods were used to examine sources of variation among practices. Of the patient and insurance characteristics investigated, only patient age had a major effect on utilization rates. However, there was considerable stability in utilization rates within practices over four consecutive six-month time intervals. The implications of these findings for profile-based utilization review and quality-assurance systems are discussed.

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