Table 6 Robustness test results.
Variable | (1) | (2) | (3) | (4) | (5) | (6) | (7) | (8) | (9) |
|---|---|---|---|---|---|---|---|---|---|
Excluding some samples | Explanatory variables lagged one period | Replace the spatial matrix | |||||||
SAR | SEM | SDM | SAR | SEM | SDM | SAR | SEM | SDM | |
dif | 0.0452*** | 0.0427*** | 0.0419*** | 0.0367*** | 0.0349*** | 0.0313*** | 0.1490*** | 0.1210*** | 0.1430*** |
| Â | (0.0103) | (0.0104) | (0.0104) | (0.0098) | (0.0100) | (0.0100) | (0.0160) | (0.0150) | (0.0170) |
W*dif | Â | Â | 0.0810*** | Â | Â | 0.0526** | Â | Â | 0.0654*** |
| Â | Â | Â | (0.0267) | Â | Â | (0.0252) | Â | Â | (0.0328) |
controls | yes | yes | yes | yes | yes | yes | yes | yes | yes |
rho | 0.2768*** | Â | 0.2441*** | 0.3061*** | Â | 0.2741*** | 0.1340*** | Â | 0.2860*** |
| Â | (0.0343) | Â | (0.0355) | (0.0330) | Â | (0.0343) | (0.0790) | Â | (0.0650) |
lambda | Â | 0.2650*** | Â | Â | 0.2990*** | Â | Â | 0.3240*** | Â |
| Â | Â | (0.0356) | Â | Â | (0.0343) | Â | Â | (0.0348) | Â |
N | 2618 | 2618 | 2618 | 2695 | 2695 | 2695 | 2695 | 2695 | 2695 |
Overall R2 | 0.03 | 0.03 | 0.04 | 0.02 | 0.014 | 0.036 | 0.05 | 0.03 | 0.028 |