[R] help with formula for clogit

[Thomas Lumley]

On Tue, Nov 8, 2011 at 4:19 AM, 1Rnwb <sbpurohit at gmail.com> wrote:
> I would like to know if clogit function can be used as below
> clogit(group~., data=dataframe)
>

Not usefully.  That syntax does not specify a strata() term, which is
why the computation is very slow and probably not what you intended.

   -thomas

-- 
Thomas Lumley
Professor of Biostatistics
University of Auckland