How to add all group of the categorical variables in Cox regression analysis in SPSS

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David Eugene Booth

You don't loose a group. The reference is the group represented by the intercept in your model. If you want to specify which group it is see the SPSS documents. Best wishes, David Booth

Vasudeva Murthy

thanks David

Janice Montbriand

If you want each group separately, I would create dummy variables for each.