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

nc {survMisc} | R Documentation

## Add number censored.

### Description

Add number censored.

### Usage

    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

    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)

[Package survMisc version 0.5.4 Index]