R Under development (unstable) (2023-08-27 r85021 ucrt) -- "Unsuffered Consequences"
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> 
> library("mlt")
Loading required package: basefun
Loading required package: variables
> library("survival")
> options(digits = 3)
> 
> data("GBSG2", package = "TH.data")
> 
> xvar <- names(GBSG2)
> xvar <- xvar[!(xvar %in% c("time", "cens"))]
> GBSG2$y <- with(GBSG2, Surv(time, cens))
> 
> fm <- as.formula(paste("Surv(time, cens) ~ ", paste(xvar, collapse = "+")))
> cmod <- coxph(fm, data = GBSG2)
> 
> order <- 10
> by <- Bernstein_basis(numeric_var("y", support = c(0, max(GBSG2$time))), order = order,
+                       ui = "incre")
> bx <- as.basis(as.formula(paste("~", paste(xvar, collapse = "+"))), data = GBSG2,
+                remove_intercept = TRUE)
> 
> m <- ctm(by, shift = bx, todist = "MinEx")
> 
> mod <- mlt(m, data = GBSG2, scale = TRUE)
> 
> n <- names(coef(cmod))
> cf <- coef(mod)[n]
> v <- vcov(mod)[n, n]
> coef(cmod) / cf
    horThyes          age menostatPost        tsize     tgrade.L     tgrade.Q 
       0.993        0.953        0.964        1.003        0.983        0.995 
      pnodes      progrec       estrec 
       1.000        1.003        1.081 
> diag(vcov(cmod)) / diag(v)
    horThyes          age menostatPost        tsize     tgrade.L     tgrade.Q 
       0.995        0.997        0.998        1.000        0.999        0.999 
      pnodes      progrec       estrec 
       1.009        0.998        0.994 
> range(vcov(cmod) / v)
[1] 0.671 1.894
> 
> proc.time()
   user  system elapsed 
   1.93    0.40    2.31