st: IVs for logit models using panel data

[SAM MCCAW <sam2stata@gmail.com>]

Dear Stata Gurus,

I have a baseline logit model with (0,1) dependent variable, and
numerical and categorical independent variables. My logit results come
out fine.

I am now trying to implement instrumental variables for my endogenous
independent variables.

What is the best module for doing this using panel data. I tried using
ivprobit but it gives me an error 409 which says initial values not
found.

Thanks a lot!

Sabin
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