Hello everyone, I did a proc lifereg using the generalized gamma distribution, as follow : proc lifereg data=survival.data;       class treatment;       model timedays*death(0)=treatment/dist=gamma; run; I want to identify the 3 parameters of the generalized gamma distribution. I know this distribution has one scale parameter and two scales parameters, but how can I calculate them using the output ? Here is what I get in the output :                                       The LIFEREG Procedure                        Analysis of Maximum Likelihood Parameter Estimates                                    Standard   95% Confidence     Chi-             Parameter       DF Estimate    Error       Limits       Square Pr > ChiSq             Intercept        1   7.3382   0.0799   7.1815   7.4949 8425.03     <.0001             treatment     0  0   0.0000    .        .        .         .        .             Scale            1   0.4830   0.3039   0.1407   1.6581             Shape            1   1.5785   1.0907  -0.5593   3.7163 Thank you very much for your help. ... View more