print.TwoSampleAalenJohansen function

Print function for object of class 'TwoSampleAalenJohansen'

## S3 method for class 'TwoSampleAalenJohansen'
print(x, digits = 4, what = "both", method = NULL, absRisk = TRUE, ...)

Arguments

• x: an object of class 'TwoSampleAalenJohansen'
• digits: number of digits to print the results
• what: either "RR", "Diff" or "both" (default), depending on whether we want to print the results for the risk ratio (RR), the risk difference (Diff) or both.
• method: either "EL", "Wald" or "both", depending on whether we want to print the results obtained when using empirical likelihood inference (EL), Wald-type inference (Wald) or both. Default is 'NULL', which means that 'method' inherits the value of the corresponding control parameter used when creating the object 'x'.
• absRisk: Default is TRUE and this should not be changed.
• ...: Not used

Returns

no return value, called for printing only.

Examples

## A simple example for Wald-type inference, using simulated data.
## It illustrates the possible inconsistency of Wald-type inference, in
## terms of statistical significance, when inference is based on the risk
## ratio and on the risk difference. This inconsistency cannot exist
## using an empirical likelihood approach.

ResSimA100 <- TwoSampleAalenJohansen(time=SimA100$time,
                                     cause=SimA100$status,
                                     group=SimA100$group,
                                     t=1,
                                     contr=list(method="Wald"))
print(ResSimA100, digits=3, what="Diff")
print(ResSimA100, digits=3, what="RR")

## Same example data, but now analyzed with and empirical likelihood approach. It
## takes approx 20 seconds to run.

ResSimA100 <- TwoSampleAalenJohansen(time=SimA100$time,
                                     cause=SimA100$status,
                                     group=SimA100$group,
                                     t=1)
print(ResSimA100, digits=3, what="Diff",  method="EL")

Author(s)

Paul Blanche