Table 8 Heterogeneity analysis.
Variable name | Small-scale | Medium-scale | Large-scale | Western Shandong | Central Shandong | Eastern Shandong |
|---|---|---|---|---|---|---|
(1) | (2) | (3) | (4) | (5) | (6) | |
CE × ER | 8.594 (0.78) | 7.394 (1.01) | 27.261*** (3.63) | 11.182 (1.39) | 13.701* (1.82) | 16.319** (2.28) |
Control variables | Controlled | Controlled | Controlled | Controlled | Controlled | Controlled |
LRx2(F) | 63.96 | 55.78 | 66.11 | 41.75 | 53.64 | 77.36 |
Log likelihood | -178.47 | -254.19 | -165.6 | -209.2*** | -193.77 | -206.98*** |
Pseudo R2 | 0.152 | 0.0989 | 0.1664 | 0.0907 | 0.1216 | 0.1574 |
N | 312 | 407 | 289 | 332 | 321 | 355 |
