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  • Margins Error - Delta Ordered Probit Regression

    Hello Statalst,

    Has anyone experienced an error like this or know what it means? I lagged and differenced my variables to create delta variables and included these in an ordered probit model. However, when I try and use the margins command to visualize the data, I receive this error (image below).

    Any help or suggestions as to why this may be would be appreciated.
    Thank you

    xtoprobit delta_court_redistrict c.delta_egC delta_partyid delta_vote [pweight=weight], vce(robust)
    Click image for larger version

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