Hi I have some difficulties in calculating differences in time dependent AUC using Proc Phreg (SAS 14.3). I have only been able to calculate the estimates and the confidence intervals and not the p-values using this equation: proc phreg data=survival_ph plots(overlay=individual)=roc(tick) rocoptions(method=ipcw(cl iter=50 seed=20918) at=12 auc aucdiff); model ITTtime*ITTdeath(0)=diabetic age Albumin0 nPNA0 GFR0 /roclabel='Full Model'; roc "diabetic age Albumin0 nPNA0" diabetic age Albumin0 nPNA0; roc "diabetic age Albumin0" diabetic age Albumin0; roc "diabetic Albumin0 nPNA0" diabetic Albumin0 nPNA0; roc "diabetic Albumin0 nPNA0 GFR0" diabetic Albumin0 nPNA0 GFR0; run; I sincerely hope that someone can help med finding a way to show the p-values. Thank you in advance Best regards Alexander
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