Hi Statalist,
I'm currently attempting to look at the impact of different variables on democracy. I am using the V-dem score for democracy which is a continuous variable between 0-1 (v2x_libdem). For independent variables I am using GDP per capita, GDP growth, life expectancy, primary school enrollment and cellular coverage. I have been reading a lot online to find the best model for undertaking this task. I have 42 different countries and a range between 57 and 4 years for each country. This gives me 1,987 observations.
Models I have looked at include:
xtreg v2x_libdem gdp gdpgpc lifeexp prisch mobile i.year, fe
xtregv2x_libdem gdp gdpgpc lifeexp prisch mobile, vce(robust)
xtabond v2x_libdem gdp gdpgpc lifeexp prisch mobile, vce(robust)
xtgls v2x_libdem gdp gdpgpc lifeexp prisch mobile
and looking into xtpcse.
However, I just can't work out which one is best for unbiased and most efficient coefficients.
Best,
Charlie
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