54 lines
1.5 KiB
Plaintext
54 lines
1.5 KiB
Plaintext
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R version 2.9.0 (2009-04-17)
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Copyright (C) 2009 The R Foundation for Statistical Computing
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ISBN 3-900051-07-0
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R is free software and comes with ABSOLUTELY NO WARRANTY.
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You are welcome to redistribute it under certain conditions.
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Type 'license()' or 'licence()' for distribution details.
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R is a collaborative project with many contributors.
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Type 'contributors()' for more information and
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'citation()' on how to cite R or R packages in publications.
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Type 'demo()' for some demos, 'help()' for on-line help, or
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'help.start()' for an HTML browser interface to help.
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Type 'q()' to quit R.
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> options(na.action=na.exclude) #preserve length of missings
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> library(survival)
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Loading required package: splines
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>
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> #
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> # Check out using a "user specified" distribution
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> #
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> mydist <- c(survreg.distributions$extreme, survreg.distributions$weibull[-1])
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> mydist$name <- "Weibull2"
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> mydist$dist <- NULL
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>
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> fit1 <- survreg(Surv(time, status) ~ age + ph.ecog, lung)
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> fit2 <- survreg(Surv(time, status) ~ age + ph.ecog, lung, dist=mydist)
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>
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> all.equal(fit1$coef, fit2$coef)
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[1] TRUE
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> all.equal(fit1$var, fit2$var)
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[1] TRUE
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>
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> #
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> # And with an data set containing interval censoring
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> #
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> idat <- read.table('data.interval', skip=3, header=T, sep=',')
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>
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> fit1 <- survreg(Surv(ltime, rtime, type='interval2') ~ age + ecog.ps, idat)
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> fit2 <- survreg(Surv(ltime, rtime, type='interval2') ~ age + ecog.ps,
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+ data=idat, dist=mydist)
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>
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> all.equal(fit1$coef, fit2$coef)
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[1] TRUE
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> all.equal(fit1$var, fit2$var)
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[1] TRUE
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> all.equal(fit1$log, fit2$log)
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[1] TRUE
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>
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>
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