Data Envelopment Analysis (DEA) is one of the best methods for measuring the efficiency and productivity of Decision Making Units (DMU). Evaluating the efficiency of DMUs which have two or several stages by using the conventional DEA models, is equal to consider them as black box. This method, omits the effect of intermediate measure on efficiency. Therefore, just the first network inputs and t...

since hospitals are an important and integral part of the overall health delivery system, this study was carried out to measure the effectiveness of this institution within the system. the records of 633 hospitalized patients in the pediatrics ward of ghaem hospital in mashhad during 1357 (21 march 1978-20 march 1979) has been consulted. more than half of the patients were hospitalized with the...