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st: Marginal effects after xtprobit
From
Elin Vimefall <[email protected]>
To
"[email protected]" <[email protected]>
Subject
st: Marginal effects after xtprobit
Date
Wed, 2 Oct 2013 07:15:10 +0000
Hi
I'm interested in why some children start school and I analyze this with a probit model.
Since I believe that there are unobserved characteristics at district level casing the error terms to be correlated I use cluster for the error term.
My model looks like this:
probit School x1 x2, cluster(district)
However now I instead use the panel setting like this
Xtset district
Xtprobit school x1 x2
The result is similar with some changes in significance.
However, when I calculate the marginal effects using
margins dydx(*)
the magnitude if the marginal effects in the panel setting becomes approximately 10 times larger than the marginal effects after the normal probit.
Can someone help me explain why?
//Elin Vimefall
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