untreated: Untreated Event Time
In rpsftm: Rank Preserving Structural Failure Time Models

untreated

R Documentation

Untreated Event Time

Description

Calculates the counterfactual untreated event time, possibly using the recensoring method, assuming a given parameter value and returns a Surv() object

Usage

untreated(psi, time, delta, censor_time, rx, arm, autoswitch)

Arguments

`psi`	the parameter that measures how more rapidly the lifetime is expended under treatment
`time`	the observed failure or censoring time.
`delta`	the status of the time: 1 = observed, 0 = censored.
`censor_time`	the theoretical censoring time, either observed or set after time. Set to Inf to ignore recensoring.
`rx`	the proportion of time spent on treatment
`arm`	the randomised arm. Either a numerical indicator, with 0 as the placebo, or a factor with the lowest level as placebo.
`autoswitch`	a logical to autodetect cases of no switching. If TRUE, then if all observations in an arm have perfect compliance then recensoring is not applied in that arm. If FALSE the recensoring is applied regardless of perfect compliance.