Nothing
uni.Wald=function(t.vec, d.vec, X.mat){
n=length(t.vec)
X.mat=as.matrix(X.mat)
p=ncol(X.mat)
Beta=Z=P=numeric(p)
for(j in 1:p){
res=summary(coxph(Surv(t.vec,d.vec)~X.mat[,j]))$coef
Beta[j]=res[1]
Z[j]=res[4]
P[j]=res[5]
}
names(Z)=names(P)=names(Beta)=colnames(X.mat)
list(beta=Beta,Z=Z,P=P)
}
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