Hu Chunyan,Hu Liangping,How to use χ² test correctly——the Wald΄s test and the implementation of SAS software[J].SICHUAN MENTAL HEALTH,2021,34(6):516-521

How to use χ² test correctly——the Wald΄s test and the implementation of SAS software

DOI：10.11886/scjsws20211110008

English keywords:Wald΄s test Robust Wald΄s test Wald΄s constrained χ² test Generalized Wald΄s test χ² distribution

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Author Name	Affiliation	Postcode
Hu Chunyan	Graduate School， Academy of Military Sciences PLA China， Beijing 100850， China	100850
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	100029

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English abstract:

The purpose of this article was to introduce the Wald?s test and the SAS implementation. The specific contents involved the following nine aspects， namely the general Wald?s test，the robust Wald?s test，the constrained Wald?s χ² test，the generalized Wald?s test，the generalized Wald?s log-linear test，the Wald?s F test，the Wald?s adjusted F test，the Wald?s log-linear F test and the adjusted Wald?s log-linear F test. The paper used two examples and the SAS software to achieve most of the Wald?s tests mentioned above.

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