Austin Nichols replied to Andrea Rispoli:
> Try
> glm, link(logit)
> per
> Papke, Leslie E. and Jeffrey M. Wooldridge. 1996.  Econometric Methods
> for Fractional Response Variables with an Application to
>    401(k) Plan Participation Rates. Journal of Applied Econometrics
> 11(6):619-632.
Add the -robust- option to that.
-- 
Clive Nicholas
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"My colleagues in the social sciences talk a great deal about
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