Table 5 Heterogeneity test.
(1) | (2) | (3) | (4) | |
|---|---|---|---|---|
VARIABLES | Better endowed for economic development | Weak economic development endowment | Areas of high spatial scale advantage | Areas with low spatial scale advantage |
urp | 0.0799** | 0.0291 | 0.0324 | 0.0206* |
(0.0367) | (0.0221) | (0.0283) | (0.0113) | |
Constant | 1.1473*** | 0.2313*** | 1.1830*** | 0.1741*** |
(0.1509) | (0.0743) | (0.1674) | (0.0386) | |
Controls | YES | YES | YES | YES |
Year FE | YES | YES | YES | YES |
County FE | YES | YES | YES | YES |
Observations | 540 | 981 | 753 | 733 |
Adjusted R2 | 0.9797 | 0.9128 | 0.9768 | 0.8219 |