[An approach to evaluation methods for laboratory work].

Abstract

Evaluation methods were proposed for quality control, normal range calculation and laboratory diagnosis. As a quality control method, the Xbar-R control chart should be evaluated with an error detection chart or with operating characteristic functions. Normal range calculation was evaluated by three parameters, accuracy, precision and robustness which represents stability against abnormal data contamination. Prior to evaluating the laboratory diagnosis, patient data were plotted on a three dimensional chart, a star map, to determine whether apparent clusters were formed. Laboratory diagnosis is a process of reduction of multivariate medical information, and it develops new parameters related to the pathological state of the patient. The method was evaluated using entropy calculation or average count of abnormal parameters.