-firthlogit- is updated on SSC

[Joseph Coveney]

Thanks to Kit Baum, an updated version of firthlogit is now available for installation from SSC. It is a maintenance update, fixing two bugs, one for handling weights and the second for handling predictors that get omitted due to collinearity. In fixing the latter bug, I updated the command to be able to use Stata's factor variables. To install or update, type

search firthlogit

in Stata's command line window and follow the link in the pop-up window.

[Camille Reynolds]

Dear Joseph (and other Stata users),

I tried to run a penalized-likelihood logistic regression using firthlogit module, but it does not work with sampling weights.
It seems that firthlogit only allows frequency weights, am I right?

Then, do you know - or does anyone know - how to implement a Firth's penalized-likelihood logistic regression with sampling weights?

Thanks in advance!
Camille

[Joseph Coveney]

As the online help file states, the command accepts only frequency weights.