DEA is a quantitative method to measure efficiency scores of DMUs relative to their peer units. Health care researchers has been using this method to evaluate efficiency of different types of organizations. Hospitals and other health care organizations are using these techniques to assess their level of efficiency compared with their peers . This quantitative technique developed by Charnes, Cooper and Rhodes (1978) there are number of application of this method into health care industry . DEA develops an efficiency frontier by optimizing the weighted output/input ratio of each provider . In this study we examine Variable Returns to Scale (VRS) model and we used input orientation model. The reason of using input oriented model is that many
