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请问这个平衡趋势结果算是好还是不好呀?为什么我政策冲击前显著,冲击后不显著呀?这是不是代表我的整个回归都是不能用的额呀?有没有什么处理解决的办法?
Source | SS df MS Number of obs = 651
-------------+---------------------------------- F(50, 600) = 429.07
Model | 2172.35996 50 43.4471991 Prob > F = 0.0000
Residual | 60.7560142 600 .101260024 R-squared = 0.9728
-------------+---------------------------------- Adj R-squared = 0.9705
Total | 2233.11597 650 3.43556303 Root MSE = .31821
------------------------------------------------------------------------------
lntrade | Coef. Std. Err. t P>|t| [95% Conf. Interval]
-------------+----------------------------------------------------------------
pre10 | -2.058533 .0808264 -25.47 0.000 -2.21727 -1.899796
pre9 | -1.254533 .0808264 -15.52 0.000 -1.41327 -1.095796
pre8 | -1.122226 .0808264 -13.88 0.000 -1.280963 -.9634886
pre7 | -.8919626 .0808264 -11.04 0.000 -1.0507 -.7332256
pre6 | -.6813324 .0808264 -8.43 0.000 -.8400694 -.5225954
pre5 | -.4849338 .0808264 -6.00 0.000 -.6436708 -.3261968
pre4 | -.6882469 .0808264 -8.52 0.000 -.8469839 -.5295099
pre3 | -.3476842 .0808264 -4.30 0.000 -.5064212 -.1889472
pre2 | -.1123256 .0808264 -1.39 0.165 -.2710626 .0464114
current | .0877799 .0808264 1.09 0.278 -.0709571 .2465169
post1 | .1582926 .0808264 1.96 0.051 -.0004444 .3170297
post2 | .0100421 .0808264 0.12 0.901 -.1486949 .1687791
post3 | -.1274462 .0808264 -1.58 0.115 -.2861832 .0312908
post4 | -.044218 .0808264 -0.55 0.585 -.202955 .114519
post5 | -.0256913 .0808264 -0.32 0.751 -.1844283 .1330457
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