数学中国 Evaluation and Improvement of Healthcare Systems 117 Inequiti n heslth distribution 1 Figure 4. Figure 5. Evaluation. Hence, we form an evaluation vector (EV) consisting of the two metrics resources ev=performance, inequities This is our final composite measure to evaluate the effectiveness of a healthcare system. when both components of the vector are lower, the system is better. Determine Weights We specify the calculation of one metric, Resources; the others can be calculated in the same way. After comparing the effect of two criteria in the same layer to the higher layer, we can construct the conjugated-comparative matrix with Saaty's Rule Liang 1993]. For example, a12 can indicate the dif ference of the effect on resources between human resources and financial Resources. Let Mi be the conjugated-comparative matrix of Resources, while the elements of M, are Financial Resources 12 M2 11 After calculation of the matrix using thesummation method [Jiang 19931, e obtain the weight vectors t1=(.533,297,164),2=(.4133,26) So we can form the formulas Resources=. 539 x FR+. 297 x HR+. 164 x MR FinancialResources=.4l×Asp1+33×Asp2+26XAsp2 where our notations are defined in Table 1数学中国 www.madio.net