平行趋势检验画图时,出现invalid 'baselevels'
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平行趋势检验画图时,出现invalid '
baselevels' ,求帮助
代码如下:
xtreg y did x1 x2 x3 x4 x5 i.year,fe robust coefplot,
baselevels keep(pre_* current post_*) vertical coeflabels(pre_8="-8" pre_7= ...
2024-1-8 16:34 - 二二二ER - Stata专版