如何正确运用Z检验——两率比较一般差异性Z检验及SAS实现  

How to use Z test correctly——comparison of two population rates for the general difference Z test and the SAS implementation

作　　者：胡良平 Hu Liangping(Graduate School,Academy of Military Sciences PLA China,Beijing 100850,China;Specialty Committee of Clinical Scientific Research Statistics of World Federation of Chinese Medicine Societies,Beijing 100029,China)

机构地区：[1]军事科学院研究生院,北京100850 [2]世界中医药学会联合会临床科研统计学专业委员会,北京100029

出　　处：《四川精神卫生》2020年第5期431-435,共5页Sichuan Mental Health

摘　　要：本文介绍了用Z检验进行率比较的原理、方法和SAS实现。包括一个未知总体率与一个已知总体率比较的Z检验和两未知总体率比较的Z检验。在SAS实现方面,采取了两种途径:①基于计算公式,用SAS语言编程;②直接借助SAS中的“FREQ过程”。The paper introduced the principles,methods and SAS implementation of the comparison of the rates by using the Z test,including Z test for the comparison of an unknown population rate with a known population rate and Z test for the comparison of two unknown population rates.In the aspect of SAS implementation,two measures were taken as below:the first was writing SAS program by using SAS language based on the calculation formula,the second was directly applying the procedure FREQ in SAS software.

关 键 词：总体率 正态分布 二项分布 卡方分布 Z检验 精确检验 

分 类 号：R195.1[医药卫生—卫生统计学]