A Study on Application of Logistic Step Regression Analysis to Expert Syndrome Differential Diagnosis System Simulated by Computer
Feng Liu · 2001
Objective:To simulate the experience of expert syndrome differential diagnosis for compiling expert diagnosis system in computer.Method:According to the step of diagnosis tree,the Logistic regress equation and the diagnosis index of each‘syndrome’and branch of the diagnosis tree were calculated with Logistic step regression analysis.According to the principle of continuously multiplication of probability,the probability of every‘syndrome’on the end of the diagnosis tree was calculated with the probability of every branch of the diagnosis thee.Result:The total identical rate of ‘xu’ and ‘shi’ pattern diagnosed by Logistic step regress analysis and expert is 88%;the principle pattern is 93.8%;The vice pattern is 79.7%.Conclusion:the contribution to ‘syndrome’ of each variable and branch of diagnosis tree was sufficiently considered in the Logistic step regress analysis.It is tally with the clinical thinking procedure of expert and closer to the clinical practice.