Nothing
print.survexp <- function(x, scale=1, digits = max(options()$digits - 4, 3), naprint=FALSE, ...) {
if (!inherits(x, 'survexp'))
stop("Invalid data")
savedig <- options(digits=digits)
on.exit(options(savedig))
if (!is.null(cl<- x$call)) {
cat("Call:\n")
dput(cl)
cat("\n")
}
if (!is.null(x$summ)) cat(x$summ)
omit <- x$na.action
if (length(omit))
cat(naprint(omit), "\n")
else cat("\n")
if (is.null(x$strata)) { #print it as a matrix
mat <- cbind(x$time/scale, x$n.risk, x$surv, x$std.err)
if (!naprint) {
miss <- (is.na(mat)) %*% rep(1,ncol(mat))
mat <- mat[miss<(ncol(mat)-2),,drop=FALSE]
}
if (is.matrix(x$surv)) cname <- dimnames(x$surv)[[2]]
else cname <- "survival"
if (is.matrix(x$n.risk))
cname <- c(paste("nrisk", 1:ncol(x$n.risk), sep=''), cname)
else cname <- c("n.risk", cname)
cname <- c("time", cname)
if (!is.null(x$std.err))
cname <- c(cname, paste("se(", cname, ")", sep=''))
dimnames(mat) <- list(rep("", nrow(mat)), cname)
print(mat)
}
else { #print it out one strata at a time, since n's differ
if (is.null(x$std.err)) tname <- 'survival'
else tname <- c('survival', 'se(surv)')
nstrat <- length(x$strata)
levs <- names(x$strata)
if (nrow(x$surv)==1) {
mat <- cbind(c(x$n.risk), c(x$surv), c(x$std.err*x$surv))
dimnames(mat) <- list(levs, c("n.risk", tname))
cat(" Survival at time", x$time, "\n")
print(mat)
}
else {
for (i in 1:nstrat) {
cat(" ", levs[i], "\n")
mat <- cbind(x$time/scale, x$n.risk[,i], x$surv[,i])
if (!is.null(x$std.err)) mat<- cbind(mat,
x$std.err[,i] * x$surv[,i])
if (!naprint) mat <- mat[!is.na(mat[,3]),,drop=FALSE]
dimnames(mat) <- list(rep("",nrow(mat)),
c("Time", "n.risk", tname))
print(mat)
cat("\n")
}
}
}
invisible(x)
}
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