SurvCF: SurvCF - Counter Factual Survival Object

In iain-t-bennett/SwitchPack: Tools To Facilitate Analysis Of Trials Affected By Crossover

Description

Creates an SurvCF object that combines survival and counter factual exposure information. Derived from an RPSFT model.

Usage

SurvCF(x, CFExposure, UseObserved = FALSE)

Arguments

x	An RPSFT object created with RPSFT().
CFExposure	Defines the counter factual exposure to study drug per patient.
UseObserved	TRUE/FALSE indicator per patient if Observed values should be used for a patient.

Examples

sim.df <- simStudy()
x <- SurvExt(Surv(os.t, os.e) ~ I(x.trt==1),
   CFExposure = ifelse(x.trt == 1, os.t, ifelse(x.switch == 1, os.t - t.switch, 0)),
   AdminCensTime = t.censor,
   data = sim.df)
y <- RPSFT(x)
z <- SurvCF(y, CFExposure = ifelse(sim.df$x.trt == 0, 0, sim.df$os.t))
z <- SurvCF(y, CFExposure = 0, UseObserved = sim.df$x.trt == 1)

iain-t-bennett/SwitchPack documentation built on May 16, 2019, 11:07 a.m.