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How create sub sampleHello,

I have two sample randomized in function two methods to reduce pain.

The variable analysed is the scale of pain « EVA » (numeric discret variable : 1, 2, 3,... to 10).

I create a new variable : EVA < 4 with code 1 (and EVA > or = is coded 0).

There is a qualitative nominal variable in function type of chirurgical intervention : orthopedic, digestive,...

How can I make a Chi square test to analyse the EVA < 4 in function the arm of randomisation in a SUB SAMPLE (ex in patient underwent orthopedic intervention) ?

Thank you +++AnalyticsRe: How create sub sample

The normal method for doing what you want, would be to select the rows in the initial data table that (ex in patient underwent orthopedic intervention). 

Then create a subset data table by using the Subset Platform

     Tables=>Subset

Finally, run the Fit Y by X or Categorical platforms

     Analyze=>Fit Y by X

     Analyze=>Consumer Research=>Categorical

 

Finally, I recommend that you take the time to read the JMP introduction documents of Discovering JMP and Using JMP.  Both are found in the JMP Documentation Library found under the Help pull down menu.