| 变量 | (1) | (2) | (3) | (4) | (5) | (6) | (7) | (8) |
|---|---|---|---|---|---|---|---|---|
| Organization | 8.18***(3.15) | 7.29**(3.10) | 6.01**(2.91) | 5.18**(2.58) | ||||
| Frequency | 5.17***(1.32) | 4.40***(1.29) | 3.82***(1.32) | |||||
| Maintenance | 9.77***(3.27) | 8.85***(3.08) | 7.77**(3.08) | |||||
| Population | -3.59 (3.40) | -3.66 (3.44) | -3.88 (3.71) | -3.83(3.40) | -4.00(3.63) | |||
| AgriLabor | 10.09*(5.54) | 9.94*(5.35) | 9.80*(5.89) | 8.91*(5.21) | 8.95(5.69) | |||
| Land | -0.07 (0.63) | -0.07(0.65) | -0.11(0.71) | -0.08(0.63) | -0.11(0.68) | |||
| Distance | 0.36(0.53) | 0.32(0.54) | 0.30(0.59) | 0.35(0.51) | 0.33(0.56) | |||
| Road | 0.47(4.98) | 0.90(4.83) | 1.12 (5.02) | 0.63(4.97) | 0.86(5.15) | |||
| Adjustment | 0.52(0.55) | 0.42(0.58) | 0.52(0.65) | 0.45(0.52) | 0.54(0.58) | |||
| Disaster | -2.84(3.88) | -2.87(4.12) | -2.61(4.05) | -1.91(3.79) | -1.82(3.73) | |||
| 常数项 | 22.49***(2.36) | 50.17*(26.79) | 13.11***(3.97) | 42.91 (29.71) | 4.21(8.17) | 35.39 (34.48) | 41.00(29.47) | 34.76(34.31) |
| 地区效应 | 控制 | 控制 | 控制 | 控制 | 控制 | 控制 | 控制 | 控制 |
| Pseudo R2 | 0.018 | 0.022 | 0.019 | 0.023 | 0.020 | 0.024 | 0.024 | 0.025 |
| 观测值 | 281 | 281 | 281 | 281 | 281 | 281 | 281 | 281 |