blalock {SMPracticals} | R Documentation |
The Blalock–Taussig shunt is an operative procedure for infants with congenital cyanotic heart disease. The data are the survival times in months for shunts in 81 infants, divided into two age groups.
data(blalock)
A data frame with 81 observations on the following 3 variables.
Oakes, D. (1991) Life-table analysis. In Statistical Theory and Modelling: In Honour of Sir David Cox, FRS, eds D. V. Hinkley, N. Reid and E. J. Snell, pp. 107–128. London: Chapman and Hall/CRC Press.
Davison, A. C. (2003) Statistical Models. Cambridge University Press. Page 192.
data(blalock) library(survival) plot(survfit(Surv(months,cens)~group,data=blalock),conf.int=TRUE,col=c(2,3))