search for: coxmodel4

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2011 Feb 25
1
Forced inclusion of varaibles in validate command as well as step
...riables I deem sufficiently important to force into the model regardless of AIC or p value. This is my present log over commands ************ library(rms) library(survival) library(Hmisc) data1 <- read.table("optimism.csv", header=T, sep=",") attach(data1) coxmodel4 <- coxph(formula=Surv(OS,mors) ~ iAJCC2+iAJCC3+iPS2+iPS3++alder_diag+gender+vol_GTV+iforb2+iforb3+hem_LNL+ser o_thromb+LDH_UNL+ALAT_UNL+BASP_UNL+sero_bili+resection_perf+sero_WBC, data=data1, x=TRUE, y=TRUE,method=c("efron")) coxmodel.streg<-step(coxmodel4) I would like to &quo...