This dataset, originally discussed in McGilchrist and Aisbett (1991), describes the first and second (possibly right censored) recurrence time of infection in kidney patients using portable dialysis equipment. In addition, information on the risk variables age, sex and disease type is provided.
kidneyA data frame of 76 observations containing information on the following 7 variables.
The time to first or second recurrence of the infection, or the time of censoring
A factor of levels 1 or 2
indicating if the infection recurred for the first
or second time for this patient
Either 0 or 1, where 0 indicates
no censoring of recurrence time and 1 indicates right censoring
The patient number
The age of the patient
The sex of the patient
A factor of levels other, GN, AN,
and PKD specifying the type of disease
McGilchrist, C. A., & Aisbett, C. W. (1991). Regression with frailty in survival analysis. Biometrics, 47(2), 461-466.
if (FALSE) {
## performing surivival analysis using the "weibull" family
fit1 <- brm(time | cens(censored) ~ age + sex + disease,
data = kidney, family = weibull, init = "0")
summary(fit1)
plot(fit1)
## adding random intercepts over patients
fit2 <- brm(time | cens(censored) ~ age + sex + disease + (1|patient),
data = kidney, family = weibull(), init = "0",
prior = set_prior("cauchy(0,2)", class = "sd"))
summary(fit2)
plot(fit2)
}