本研究主要探討影響牙醫診所營運績效的關鍵因素。主要研究對象為台灣22個縣市的牙醫診所。研究年份為1998年至2012年。以panel data資料形式之迴歸模型為實證模型，並採用Breusch-Pagan LM檢定、Hausman檢定以及Hausman-Taylor檢定，選取最合適的實證方法。本研究選擇分析牙醫診所獲得之健保點數總額，用以評估診所之營運績效。實證結果發現，無論是牙醫診所的內部因素如門診總件數、醫事人員總數及開業年數等，或是外在環境因素如該地區之家庭所得、老化指數、失業率以及其他醫療院所之數目等，皆會明顯地影響牙醫診所的營運績效。而當同地區內的醫療機構及醫事人員數目增加時，會導致該地區內牙醫診所的平均收入有所減少，顯示出一區域內的醫療同業競爭，對其收入總額有顯著負向影響。此外，城鄉差距的問題，例如醫療資訊取得難易度不同以及醫療資源分布不均等等，也明顯地影響著城鄉間牙醫診所的營運績效。

This study mainly investigates the determinants of the operational performance of dental clinics in Taiwan during the period from 1998 to 2012. The study utilizes a panel data regression model and employs the Breusch-Pagan LM test, the Hausman test and the Hausman-Taylor Over-identification test in order to choose the appropriate empirical method. This study analyzes the total amount of the relative-value units (RVUs) to measure the operational performance of a dental clinic. The empirical results provide several key findings as follows. First, both internal factors (number of outpatient cases, number of medical personnel and years open) and external factors (household income, aging index, the unemployment rate and number of other medical institutions) have a significant impact on the operational performance of dental clinics. Second, the revenue of a dental clinic will be eroded by other homogeneous medical institutions and medical personnel in the same region. Finally, there will be differences in the operational performance of dental clinics between urban and rural areas, which might be because of the gap in health care information and resources.

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