小弟刚刚开始学习双重差分模型,利用帮助选项中的例子得到一个图表如下,请问各位大神这张图中关键系数是怎么对应的, 1.442, 1.440 , -0.002 ,1.520 , 1.544 , 0.024, 0.026 是什么东西;小弟初学,还望各位大神不要嫌弃问题简单
diff ln_wage, t(msp) p(per)
DIFFERENCE-IN-DIFFERENCES ESTIMATION RESULTS
Number of observations in the DIFF-IN-DIFF: 2607
Baseline Follow-up
Control: 740 657 1397
Treated: 635 575 1210
1375 1232
Outcome var. ln_wage S. Err. t P>t
Baseline
Control 1.442
Treated 1.440
Diff (T-C) -0.002 0.021 -0.08 0.933
Follow-up
Control 1.520
Treated 1.544
Diff (T-C) 0.024 0.022 1.11 0.265
Diff-in-Diff 0.026 0.030 0.87 0.386
R-square: 0.01
* Means and Standard Errors are estimated by linear regression
**Inference: *** p<0.01; ** p<0.05; * p<0.1


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