| 变量 | Res | |||
|---|---|---|---|---|
| (1) | (2) | (3) | (4) | |
| Digit | 0.2035*** (0.0598) | 0.4329*** (0.1322) | 0.4814** (0.1973) | 0.5250*** (0.1767) |
| Dig1 | 0.3136** (0.1524) | 1.2766** (0.5742) | 0.8619** (0.4233) | 0.7966** (0.3485) |
| Dig2 | 0.0403* (0.0241) | 0.0093 (0.0077) | 0.0327* (0.0178) | 0.0336** (0.0151) |
| Dig3 | 0.1836*** (0.0497) | 0.3358** (0.1602) | 0.3376** (0.1594) | 0.3147** (0.1268) |
| Dig4 | 0.0375*** (0.0120) | 0.0173 (0.0169) | 0.0217** (0.0103) | 0.0588*** (0.0137) |
| Dig5 | 0.0037* (0.0021) | 0.0126* (0.0070) | 0.0138* (0.0063) | 0.0029 (0.0079) |