Table 7.
Robustness check_ test for threshold (change X variable).
| Sample | Threshold | Fstat | Prob | BS-times | Crit10 | Crit5 | Crit1 |
|---|---|---|---|---|---|---|---|
| Total | Single | 12.85** | 0.0333 | 300 | 9.9777 | 11.5380 | 14.5481 |
| Double | 8.11* | 0.0867 | 300 | 7.6325 | 9.2197 | 13.0027 | |
| Triple | 2.66 | 0.8133 | 300 | 7.9963 | 10.6030 | 15.6834 | |
| Economy_H | Single | 5.76 | 0.2367 | 300 | 7.7294 | 9.1179 | 14.7549 |
| Double | 3.14 | 0.4600 | 300 | 5.9933 | 6.6845 | 8.7680 | |
| Economy_L | Single | 11.2** | 0.0367 | 300 | 8.2079 | 9.9822 | 15.5595 |
| Double | 3.93 | 0.4900 | 300 | 7.5140 | 8.6265 | 11.4277 | |
| Eeconomy_H | Single | 4.26 | 0.4133 | 300 | 7.5202 | 9.4236 | 12.8711 |
| Double | 26.09*** | 0.0067 | 300 | 7.0141 | 8.3461 | 13.2125 | |
| Triple | 3.28 | 0.5833 | 300 | 55.7451 | 89.7257 | 141.9737 | |
| Eeconomy_L | Single | 8.13 | 0.2367 | 300 | 10.1657 | 12.3604 | 16.7166 |
| Double | 9.40 | 0.1567 | 300 | 10.6387 | 11.9059 | 21.7479 |
***, **, and *, respectively, indicates significance at the 1, 5, and 10% level.