I am a beginner in SAS. I am trying to fit a parametric regression model. But while running this code, I am getting largest values in the categorical variables are being omitted. How do I set the lowest number as the reference category. Also is it possible to get the hazard ratios from this procedure proc lifereg data = v3 ; class sex costct cpm mt; model deadtime* dead(0) = age sex ac6 costct mt cpm /dist=weibull ; run;
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