I only have second-best solutions:
-mtreatnb- from sj6-4 fits a treatment-effects model that considers the effects of an endogenously chosen multinomial treatment on another endogenous count outcome
-selmlog- from http://www.delta.ens.fr/gurgand/ fits multinomial logit with selection (one equation estimates the likelihood of being selected or observed using a multinomial logit specification, while in the second stage a regression model is run)
-oheckman- from ssc fits ordered-probit models with sample selection using either a two-step consistent estimator or full-information maximum likelihood (one equation estimates the likelihood of being selected or observed using an ordered-probit specification, while in the second stage a regression model is run)
You may also think about -cmp- from ssc
Nicola
At 02.33 27/11/2007 -0500, "Apostolos Ballas" wrote:
>Stata includes a regression model where the effects of a binary treatment on
>an another endogenous varibale are investigated. Does anyone know if there
>is a STATA program to estimate a similar model where the treatment variable
>takes multiple values (eg, a Likert scale type responce).
>
>Thanks for the assistance,
>
>
>Apostolos Ballas
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