Table 5 Balance test.
Variable name | Matching situation | Experimental group mean | Control group group mean | Deviation rate | Deviation reduction rate | T-value | P-value |
|---|---|---|---|---|---|---|---|
gender | Before matching | 0.51605 | 0.50821 | 1.6 | −3.7 | 1.19 | 0.236 |
After matching | 0.5167 | 0.52483 | −1.6 | −1.09 | 0.277 | ||
age | Before matching | 46.691 | 49.161 | −18.2 | 63.4 | −13.76 | 0 |
After matching | 46.684 | 45.782 | 6.7 | 4.44 | 0 | ||
urb | Before matching | 0.55184 | 0.44733 | 21 | 83.7 | 15.89 | 0 |
After matching | 0.54933 | 0.56637 | −3.4 | −2.29 | 0.022 | ||
health | Before matching | 2.9739 | 2.8714 | 8.6 | 85.2 | 6.46 | 0 |
After matching | 2.9731 | 2.9882 | −1.3 | −0.87 | 0.386 | ||
eduyear | Beforematching | 8.4851 | 7.264 | 25.7 | 98 | 19.46 | 0 |
After matching | 8.466 | 8.49 | −0.5 | −0.34 | 0.737 | ||
familysize | Before matching | 3.7466 | 3.8186 | −4.1 | 59.6 | −3.05 | 0.002 |
After matching | 3.7482 | 3.7773 | −1.7 | −1.14 | 0.254 | ||
child | Before matching | 1.6037 | 1.9034 | −28.5 | 94.8 | −20.97 | 0 |
After matching | 1.6068 | 1.5911 | 1.5 | 1.06 | 0.291 | ||
fincome | Before matching | 8.3959 | 8.0484 | 29.7 | 98.4 | 22.35 | 0 |
After matching | 8.3913 | 8.3857 | 0.5 | 0.32 | 0.751 | ||
lngdp | Before matching | 10.859 | 10.641 | 34.8 | 95.3 | 27.37 | 0 |
After matching | 10.855 | 10.865 | −1.6 | −1.02 | 0.309 | ||
lnsize | Before matching | 6.3515 | 6.1111 | 36.8 | 74.3 | 29.04 | 0 |
After matching | 6.3467 | 6.2848 | 9.5 | 6.21 | 0 | ||
lntysize | Before matching | 8.8527 | 7.9582 | 71.3 | 95.6 | 56.73 | 0 |
After matching | 8.8345 | 8.795 | 3.2 | 1.93 | 0.053 |
