第六章的数据和书里面不一样。贴个结果,或许能帮到其他人
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Variable Sample | Treated Controls Difference S.E. T-stat
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re78 Unmatched | 6349.1435 21553.9209 -15204.7774 1154.61433 -13.17
ATT | 6349.1435 6796.34408 -447.200574 782.099078 -0.57
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