| KM | NNM 1-1 | IPW | RA | IPWRA | |
| ATET | −0.05236 | −0.05321 | −0.0096 | −0.0103 | −0.01038 |
| 标准差 | 0.2615 | 0.2613 | 0.2351 | 0.02443 | 0.02783 |
| 样本数 | 335 | 335 | 335 | 335 | 335 |