Table 5 Causal test results of PSM.
Treatment variables | ATT | t | p | Significance | Uniform sample size after matching | Standardized differences after covariate matching |
|---|---|---|---|---|---|---|
w2a12 | 0.377 | 8.91 | 0 | *** | 688/688 | w2b02: 0.035, w2a27: − 0.109, w2a28: − 0.036, w2b18: − 0.076 |
w2b02 | − 0.214 | − 3.982 | 0 | *** | 548/548 | w2a12: − 0.025, w2a27: 0.040, w2a28: − 0.014, w2b18: − 0.035 |
w2a27 | 0.181 | 4.381 | 0 | *** | 808/808 | w2a12: 0.192, w2b02: 0.009, w2a28: − 0.022, w2b18: 0.044 |
w2a28 | 0.312 | 8.641 | 0 | *** | 719/719 | w2a12: 0.285, w2b02: − 0.167, w2a27: 0.039, w2b18: − 0.020 |
w2b18 | 0.227 | 5.869 | 0 | *** | 713/713 | w2a12: 0.003, w2b02: 0.141, w2a27: − 0.096, w2a28: 0.004 |
