Allow linear link model with Binomial families #1127

dchansen opened this Issue Oct 17, 2013 · 1 comment


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Currently, the Binomial family for generalized linear models does not accept the identity link.
When modifying the code to allow for the identity link, the link seems to work as expected and the results returned appear reasonable.
Is there a reason for not allowing the identity link? It would be useful for things like estimating risk difference.

@jseabold jseabold added a commit to jseabold/statsmodels that referenced this issue Oct 17, 2013
@jseabold jseabold ENH: Allow identity link in Binomial. Closes #1127. d5cf5bf

Looks like oversight. That commit should fix it.

@jseabold jseabold closed this in 2b8d67e Oct 23, 2013
@PierreBdR PierreBdR pushed a commit to PierreBdR/statsmodels that referenced this issue Sep 2, 2014
@jseabold jseabold ENH: Allow identity link in Binomial. Closes #1127. 40a302a
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