The Icens package implements a number of different estimation paradigms. Briefly, for interval censored data, the KM does not apply, but Turnbull's method does. Relevant citations for Icens are in it.
For a Cox model approach, there was at one time a package, not at CRAN, by Commenges (and a Biometrics paper, I believe), Google suggests that Dr. Commenges is pretty active in this area. David Winsemius wrote: > "gallon li" <[EMAIL PROTECTED]> wrote in > news:[EMAIL PROTECTED]: > >> Does anybody know if there is such a function to estimate the >> distribution for interval censored data? >> >> survfit doesn't work for this type of data as I tried various >> references. > > My reading of R-help posts by Therneau and Lumley is that interval > censoring is only available for parametric estimates in the survival > package. > > It's not KM, but perhaps this will be of interest: > > "Turnbull's Nonparametric Estimator for Interval-Censored Data" > Suely Ruiz Giolo > > <http://www.est.ufpr.br/rt/suely04a.pdf> > > Giolo cites KLEIN, J. P, MOESCHBERGER, M. Survival Analysis. New York: > Springer Verlag, 1997, for the algorithm. > > This MIT-CSAIL report says they have an available R package that handles > interval censoring and time-dependent covariates: > > http://dspace.mit.edu/bitstream/1721.1/33957/1/MIT-CSAIL-TR-2006-055.pdf > -- Robert Gentleman, PhD Program in Computational Biology Division of Public Health Sciences Fred Hutchinson Cancer Research Center 1100 Fairview Ave. N, M2-B876 PO Box 19024 Seattle, Washington 98109-1024 206-667-7700 [EMAIL PROTECTED] ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
