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在flannery那篇论文P490 表5 Panel中,第二列是否计算的是弹性系数?
xi: reg F.s_BDR s_BDR s_BDR_star s_MB_EFWA i.year
mat tab5b[1,1] = _b[s_BDR_star]
qui sum BDR if e(sample)
mat tab5b[1,2] = _b[s_BDR_star]/r(sd)
mat tab5b[2,1] = _b[s_MB_EFWA]
mat tab5b[2,2] = _b[s_MB_EFWA]/r(sd)
如果是弹性系数,计算方式是否应该为 _b[s_BDR_star]*[mean(x)/mean(x)],而非_b[s_BDR_star]/r(sd)