Hi Dimitriy,
I'm not sure how to answer your confidence interval question off the top of my head, but if you use the factor notation with option #1 (i.variable name) on the variable "vote", your AME equals .095 exactly.
Melissa
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Melissa Garrido, PhD
Research Health Science Specialist
GRECC, James J Peters VA Medical Center, Bronx, NY
Assistant Professor
Brookdale Department of Geriatrics & Palliative Medicine
Icahn School of Medicine at Mount Sinai, New York, NY
718-584-9000 x 3804
melissa.garrido@mssm.edu
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st: comparing biprobit marginal effects CIs
