MTシステムによるOECD 35か国の医療制度パフォーマンスの評価

─単位空間のメンバーが1つの場合の評価法─

抄録

The OECD evaluates the performance of the health systems of its 35 member countries relative to the mean values of 22 indices, but does not evaluate the set of all 22 indices taken together. A set evaluation was therefore attempted by use of the Mahalanobis-Taguchi system with a unit space having only one member（one-member T method）. Two cases were considered: （1）use of the set of mean values of the 22 indices as the unit space, and（2）use of the set of best values of the 22 indices as the unit space. The transferability S/N ratio was calculated for each case, and the correlation between the transferability S/N ratio and the mean life expectancy at birth, which is the most frequently used indicator of health, was investigated. When the best values were used as the unit space, the coefficient of correlation between the mean life expectancy at birth and the transferability S/N ratio was 0.664 3, indicating a stronger correlation than when the mean values were used. The one-member T method with the best values set as the unit space was therefore thought to be useful in evaluating OECD health system performance.