survreg.old {survival} | R Documentation

## Old (survival4) Regression for a parametric survival model

### Description

This routine is a backwards-compatible interface to the improved survreg function, which is better.

### Usage

    survreg.old(formula, data=sys.frame(sys.parent()), ..., link=c("log",
    "identity"),dist=c("extreme", "logistic", "gaussian",
    "exponential","rayleigh","weibull"), fixed=list())

### Arguments

`formula` | a formula expression as for other regression models. See the documentation for `lm` and `formula` for details.
`data` | optional data frame in which to interpret the variables occuring in the formula.
`...` | other arguments to `survreg`
`link` | transformation to be used on the y variable.
`dist` | assumed distribution for the transformed y variable.
`fixed` | a list of fixed parameters, most often just the scale.

### Value

an object of class `survreg` is returned, which inherits from class `glm`.

### Examples

    data(ovarian)
    survreg.old(Surv(futime, fustat) ~ ecog.ps + rx, ovarian, dist='extreme',
                    link='log', fixed=list(scale=1))   #Fit an exponential

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