高速铁路和城市蔓延对雾霾污染的异质性影响
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范建双, 周琳, 虞晓芬
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The heterogeneity effect of high-speed railway and urban sprawl on haze pollution
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FAN Jianshuang, ZHOU Lin, YU Xiaofen
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表6 平衡性检验结果
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Tab. 6 Balance test results
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| 变量 | 样本 | 均值差异检验 | | 标准化差异检验 | | 实验组均值 | 控制组均值 | T检验（P值） | 标准化差异 | 降幅（%） | | lnPgdp | 匹配前 | 10.285 | 9.693 | 4.80(0.000) | | 91.6 | 85.5 | | 匹配后 | 10.179 | 10.093 | 0.54(0.591) | 13.2 | | | Real | 匹配前 | 0.184 | 0.103 | 7.02(0.000) | 113.6 | 93.4 | | 匹配后 | 0.155 | 0.150 | 0.30(0.763) | 7.5 | | | Gov | 匹配前 | 0.056 | 0.053 | 0.56(0.587) | 10.4 | 12.4 | | 匹配后 | 0.054 | 0.052 | 0.36(0.721) | 9.1 | | | lnProad | 匹配前 | 2.160 | 1.866 | 3.01(0.003) | 59.9 | 68.6 | | 匹配后 | 2.098 | 2.194 | -0.74(0.462) | -18.8 | | | Inst | 匹配前 | 4.863 | 4.657 | 0.94(0.350) | 19.7 | 54.0 | | 匹配后 | 4.903 | 4.809 | 0.40(0.693) | 9.1 | | | Serv | 匹配前 | 4.007 | 3.434 | 4.21(0.000) | 80.0 | 87.2 | | 匹配后 | 3.843 | 3.917 | -0.37(0.713) | -10.3 | | | lnAwage | 匹配前 | 9.938 | 9.739 | 4.68(0.000) | 83.9 | 91.5 | | 匹配后 | 9.900 | 9.884 | 0.28(0.784) | 7.1 | | | Pseudo R2 | 匹配前 | 0.313 | | | | | | 匹配后 | 0.034 | | | | |
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