Matching methods | Processing effect | Model (1) RD | Model (2) RDP | Model (3) BC | Model (4) Patent |
probability ratio | ATT | 0.120*** (2.87) | 0.220** (2.53) | 0.003 (0.34) | 0.098 (0.84) |
ATU | 0.080** (1.83) | 0.146 (1.55) | 0.012 (1.20) | −0.141 (−1.23) | |
ATE | 0.098*** (3.05) | 0.179** (2.51) | 0.008 (1.14) | −0.035 (−0.39) | |
K−near neighbor (k = 1) | ATT | 0.120*** (2.96) | 0.220** (2.53) | 0.003 (0.37) | 0.098 (0.84) |
ATU | 0.080* (1.65) | 0.146 (1.61) | 0.0112 (1.16) | −0.141 (−1.19) | |
ATE | 0.098*** (2.82) | 0.179*** (2.66) | 0.008 (1.11) | −0.035 (−0.38) | |
Radius matching (r = 0.01) | ATT | 0.104*** (4.48) | 0.195*** (3.51) | 0.006 (1.17) | 0.065 (0.88) |
ATU | 0.123*** (3.91) | 0.206*** (2.85) | 0.008 (0.12) | −0.008 (−0.08) | |
ATE | 0.115*** (4.56) | 0.202*** (3.39) | 0.003 (0.57) | 0.025 (0.33) | |
Kernel matching | ATT | 0.120*** (2.85) | 0.220*** (2.61) | 0.028 (0.35) | 0.098 (0.88) |
ATU | 0.080* (1.75) | 0.146 (1.60) | 0.12 (1.21) | −0.141 (−1.17) | |
ATE | 0.098*** (2.98) | 0.179*** (2.59) | 0.008 (1.13) | −0.035 (−0.39) |