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. tab 质量new
质量new | Freq. Percent Cum.
------------+-----------------------------------
0 | 8,794 51.29 51.29
1 | 8,351 48.71 100.00
------------+-----------------------------------
Total | 17,145 100.00
. reg roe1 质量new
Source | SS df MS Number of obs = 12,357
-------------+---------------------------------- F(1, 12355) = 1.82
Model | 78.1085034 1 78.1085034 Prob > F = 0.1777
Residual | 531177.972 12,355 42.9929561 R-squared = 0.0001
-------------+---------------------------------- Adj R-squared = 0.0001
Total | 531256.081 12,356 42.9957981 Root MSE = 6.5569
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roe1 | Coef. Std. Err. t P>|t| [95% Conf. Interval]
-------------+----------------------------------------------------------------
质量new | -.1600834 .118767 -1.35 0.178 -.3928852 .0727184
_cons | .1951722 .088704 2.20 0.028 .0212984 .3690459
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. imb year industy,treatment(质量new)
Multivariate L1 distance: .50107423
Univariate imbalance:
matrix r(imbal) not found
r(111);
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