On this Picostat.com statistics page, you will find information about the nwtco data set which pertains to Data from the National Wilm's Tumor Study. The nwtco data set is found in the survival R package. You can load the nwtco data set in R by issuing the following command at the console data("nwtco"). This will load the data into a variable called nwtco. If R says the nwtco data set is not found, you can try installing the package by issuing this command install.packages("survival") and then attempt to reload the data. If you need to download R, you can go to the R project website. You can download a CSV (comma separated values) version of the nwtco R data set. The size of this file is about 113,680 bytes.
Data from the National Wilm's Tumor Study
Measurement error example. Tumor histology predicts
survival, but prediction is stronger with central lab histology than
with the local institution determination.
A data frame with 4028 observations on the following 9 variables.
Histology from local institution
Histology from central lab
indicator for relapse
time to relapse
age in months
Included in the subcohort for the example in the
NE Breslow and N Chatterjee (1999),
Design and analysis of two-phase studies with binary outcome applied
to Wilms tumour prognosis.
Applied Statistics 48, 457–68.
Dataset imported from https://www.r-project.org.