nc: Add *n*umber *c*ensored.

Description Usage Arguments Value Examples

View source: R/nc.R

Description

Add number censored.

Usage

1
2
3
4
5
6
7
nc(x, ...)

## S3 method for class 'ten'
nc(x, ...)

## S3 method for class 'stratTen'
nc(x, ...)

Arguments

x

An object of class ten or stratTen.

...

Additional arguments (not implemented).

Value

The original object, with new column(s) added indicating the number censored at each time point, depending on attr(x, "shape"):

"long"

the new column, c, gives the number censored at each timepoint, by covariate group.

"wide"

new columns, beginning with c_, give the number censored at each timepoint, by covariate group. There is an additional nc column giving the total number censored at each timepoint.

A stratTen object has each ten element in the list modified as above.

Examples

1
2
3
4
5
6
7
8
9
data("kidney", package="KMsurv")
t1 <- ten(survfit(Surv(time, delta) ~ type, data=kidney))
nc(t1)
nc(asWide(t1))

## stratified model
data("pbc", package="survival")
t1 <- ten(coxph(Surv(time, status==2) ~ log(bili) + age + strata(edema), data=pbc))
nc(t1)

survMisc documentation built on May 2, 2019, 3:16 a.m.