Abstract
The objective of this study is to improve the reliability of diagnosis resulted from health examination using Mahalanobis distance. An orthogonal array and Signal-to-Noise Ratio were used to select the contributing items used in diagnosis. The Receiver Opeerating Characteristic (ROC) curve was used to evaluate the discrimintating power. As a result, the reliability of final diagnosis was improved.
Moreover, the results showed that Mahalanobis distance is effective for observing the changes of an individual's health condition, which is very useful for preventive medicine.
