摘要
Ｉｎｆｏｒｍａｔｉｏｎｃｏｎｔｅｎｔｍｅｔｈｏｄｆｏｒｅｖａｌｕａｔｉｎｇｄｉａｇｎｏｓｔｉｃｔｅｓｔｓａｎｄｉｔｓｃｏｍｐａｒｉｓｏｎｏｆｐｏｗｅｒｗｉｔｈｏｔｈｅｒ ｍｅｔｈｏｄｓＣｈｅｎＰｉｎｇｙａｎ（陈平雁）；ＷａｎｇＢｉｎｈｕｉ（王斌会）；...
This paper derives the variance of the information content and develops its statistical inference method. We describe the relations between information content and sensitivity, specificity, efficiency, prevalence rate. If sensitivity, specificity and efficiency are fixed, the closer to 0. 5 the prevalence rate is, the more the information content. If prevalence rate and efficiency are fixed, the closer to each other the sensitivity and specificity are, the more the information content. We compare the power of information content method, efficiecy test, Youden's index test and kappa coefficient method. The information content method has higher power than the other methods in most conditions. It is especially sensitive to the difference between two sensitivities. It comes to conclusion that the information content method has more virtues than the other methods mentioned in this paper.
