Hi, members! I am using a cross-section data from a survey, where I am studying the effects of regime types on work ethic. My variables of interest are the regime type and individual controls (such as sex, age, etc.). When I create a dummy "country" to consider it a fixed effect, stata omitts some countries because of collinearity (that I believe that is collinear with the regime type). Can anyone explain me what should I do in order to control for unobserved heterogeneity?
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