Re: [R] methods for interval-censored data

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Subject: Re: [R] methods for interval-censored data
From: Jim Lindsey (james.lindsey@luc.ac.be)
Date: Wed 20 Sep 2000 - 02:20:45 EST 

Message-Id: <200009191620.SAA24739@alpha.luc.ac.be>

>
> >>>>> "EP" == Emmanuel Paradis <paradis@isem.univ-montp2.fr> writes:
>
>
> EP> Dear all, Are there functions or packages in R that can handle
> EP> interval-censored data? I have looked in various packages
> EP> (such as survival5 or event), but it seems that only
> EP> right-censored data can be analysed.
>
> What do you want to do? 1-sample? regression models? hypothesis
> testing? This isn't clear.
>
> Also, what assumptions are you referring to? Continuous examination
> process, or discrete examination process?
>
> There aren't clear choices for fitting -- for the semiparametric
> regression models, the properties of the many approaches for variance
> estimation for regression parameters aren't well understood.
>
> For parameteric models, Jim gave the answer and has a paper detailing
> the characteristics of the approaches (Jim - did you ever publish
> this?)

Yes:
Lindsey, J.K. (1998) A study of interval censoring in parametric
regression models. Lifetime Data Analysis 4, 329-354.
  Jim

>
> EP> More generally, are there methods to analyse both
> EP> interval-censored observations and right-censored observations
> EP> in the same data set?
>
> All right censored observations are inherently interval censored, take
> the interval (C,\infty).
>
> best,
> -tony
>
> --
> A.J. Rossini Rsrch. Asst. Prof. of Biostatistics
> BlindGlobe Networks (home/default) rossini@blindglobe.net
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