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Re: st: probit offset produces a coeff of -1 instead of 1
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"[email protected]" <[email protected]>, "\"[email protected]\"" <[email protected]>
Subject
Re: st: probit offset produces a coeff of -1 instead of 1
Date
Sat, 17 Aug 2013 12:19:35 -0700 (PDT)
RIGHT, MANY THANKS !
I don't think you want to include x1 as a regressor if you are also specifying it as the offset. It is like you are trying to enter the same variable twice.
At 09:56 AM 8/17/2013, [email protected] wrote:
Hello everyone I am trying to estimate a probit model where I need to fix the effect of a variable to be equal to 1 (data was generated from autility function where the coefficient is 1 for that variable). I thought using the option offset is the way to go: probit y x1 x2 x3, offset(x1) However, the estimate of the coefficient for x1 is -1 (to be more precise, -.95 with a CI of -.9911481 to -.9251313).
>Does anyone know what to make out of the unexpected sign?
Many thanks in advance
Denisa *
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Richard Williams, Notre Dame Dept of Sociology
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