It has obviously been a very long time since I wrote that manual page.
I've now updated it with the following which will show up in the next
release.
\note{The study is described in Laurie et al. A version of the data
set with less follow-up time is used in the paper by Lin.}
\references{
JA Laurie, CG Moertel, TR Fleming, HS Wieand, JE Leigh, J Rubin,
GW McCormack, JB Gerstner, JE Krook and J Malliard. Surgical
adjuvant therapy of large-bowel carcinoma: An evaluation of
levamisole and the combination of levamisole and fluorouracil:
The North Central Cancer Treatment Group and the Mayo Clinic.
J Clinical Oncology, 7:1447-1456, 1989.
DY Lin. Cox regression analysis of multivariate failure time data:
the marginal approach. Statistics in Medicine, 13:2233-2247, 1994.
}
Thanks for the prompt.
Terry Therneau
--------- begin included message -----
Dear R team, dear Prof. Therneau,
library(survival)
data(colon)
?colon
gives me only a very rudimentary source (only a name). Is there a
possibility to get a reference to the clinical trial these data
are taken from?
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