[R] binomial(link="inverse")

[Thomas Lumley]

On Wed, 10 Sep 2008, Prof Brian Ripley wrote:
>
> As to why the list of links known by name is as it is, that seems history. in 
> part the White Book history of S.  I've always thought it an error that 'log' 
> was a standard link for binomial, as the range does not match the 
> specification of probabilities (and S did not do so, MASS Table 7.1 ).

I think I added binomial("log"): log-binomial regression is quite popular 
and useful in epidemiology (where effect sizes are small enough that 
keeping away from the boundary may be less of a problem than people's 
inability to understand odds ratios).

As a side note, in (some versions of) S, due to partial matching, 
binomial("log") is valid -- it just does logistic regression.

 	-thomas

Thomas Lumley			Assoc. Professor, Biostatistics
tlumley at u.washington.edu	University of Washington, Seattle