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2007 Dec 18
1
hazard ratio of interaction Cox model
Dear Forum, I have a question about interaction estimate in the Cox model: why the hazard ratio of the interaction is not produced in the summary of the model? (Instead, the estimate of the coefficient is given in the print of the model.) # Example: modINT <-cph( Surv(T_BASE, T_FIN,STATUS)~ NYHA + ASINI + RFP + FE_REC + XX_PR*XX_DISF) print(modINT) coef se(coef) z p NYHA=2 1.254 0.584 2.15 0.031767 ASINI 0.665 0.409 1.62 0.104247 RFP=2 0.725 0.704 1.03 0.302578 FE_REC=2 -1.637 0.810 -2.02 0.043331 XX_PR...