[R] interval regression

Prof Brian Ripley ripley at stats.ox.ac.uk
Wed Jun 30 20:32:16 CEST 2004

I believe from your description that this is interval-censored survival
and can be handled by survreg.

It would also be very easy to amend polr to do this.

On Wed, 30 Jun 2004, Thomas Ribarits wrote:

> does anyone have a quick answer to the question of how to carry out
> interval regression in R. I have found "ordered logit" and "ordered
> probit" as well as multinomial logit etc. The thing is, though, that I
> want to apply logit/probit to interval-coded data and I know the cell
> limits which are used to turn the quantitative response into an ordered
> factor. Hence, it does not make sense to estimate the cell limits (e.g.
> in zeta for the function polr).

Brian D. Ripley,                  ripley at stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford,             Tel:  +44 1865 272861 (self)
1 South Parks Road,                     +44 1865 272866 (PA)
Oxford OX1 3TG, UK                Fax:  +44 1865 272595

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