variable value

[wajs]

Hi,

When I run binary logistic regression, I put values for outcome categories as case=1, control=0. 

Does this apply to SAS also, or I can put values as case=1, control=2?

Thanks

Abdul Wajid

[ballardw]

You can use just about any two levels you like, including character if using Proc logistic.

You an specify which even is of interest using event syntax such as

model: variable(event='A') = <predictors>

or

model: variable(event='2') = <predictors>

The default would be event=first which would be the first ordered category. You can specify either a formatted value or key words First and Last for event. Other options can affect the order considered such as DESCENDING , ORDER= .

The documentation has several worked examples.

[wajs]

Thanks!