Measurement error example. Tumor histology predicts
survival, but prediction is stronger with central lab histology than
with the local institution determination.
Usage
nwtco
data(nwtco, package="survival")
Arguments
Format
A data frame with 4028 observations on the following 9 variables.
seqno
id number
instit
Histology from local institution
histol
Histology from central lab
stage
Disease stage
study
study
rel
indicator for relapse
edrel
time to relapse
age
age in months
in.subcohort
Included in the subcohort for the example in the
paper
References
NE Breslow and N Chatterjee (1999),
Design and analysis of two-phase studies with binary outcome applied
to Wilms tumour prognosis.
Applied Statistics48, 457--68.