summary.crr {cmprsk}

Summary method for crr

Description

Generate and print summaries of crr output

Usage

## S3 method for class 'crr'
summary(object, conf.int = 0.95, digits =
max(options()$digits - 5, 2), ...)

## S3 method for class 'summary.crr'
print(x, digits = max(options()$digits - 4, 3), ...)

Arguments

object

An object of class crr (output from the crr function)

conf.int

the level for a two-sided confidence interval on the coeficients. Default is 0.95.

digits

In summary.crr, digits determines the number of significant digits retained in the p-values. In print.summary.crr, digits sets the values of the digits option for printing the output.

...

Included for compatibility with the generic functions. Not currently used.

x

An object of class summary.crr (output from the summary method for crr)

Details

The summary method calculates the standard errors, subdistribution hazard ratios z-scores, p-values, and confidence intervals on the hazard ratios. The print method prints a fairly standard format tabular summary of the results.

The pseudo likelihood ratio test in the printed output is based on the difference in the objective function at the global null and at the final estimates. Since this objective function is not a true likelihood, this test statistic is not asymptotically chi-square.

Value

summary.crr returns a list of class summary.crr, which contains components

call

The call to crr

converged

TRUE if the iterative algorithm converged

n

The number of observations used in fitting the model

n.missing

The number of observations removed by crr from the input data due to missing values

loglik

The value of the negative of the objective function (the pseudo log likelihood at convergence

coef

A matrix giving the estimated coefficients, hazard ratios, standard errors, z-scores, and p-values

conf.int

A matrix giving the estimated hazard ratios, inverse hazard ratios and lower and upper confidence limits on the hazard ratios

logtest

Twice the difference in log pseudo likelihood values

Author(s)

The summary and print.summary methods were provided by Luca Scrucca

See Also

crr

Examples

## see examples in the crr help file