Table 6 Test results of selecting models.
Test | Statistic | P value | Conclusion |
|---|---|---|---|
Hausman test | 72.90 | 0.0000 | Fixed effects were used |
Wald-SAR | 37.91 | 0.0000 | Reject SDM degradation to SAR |
Wald-SEM | 55.41 | 0.0000 | Reject SDM degradation to SEM |
LR-both-ind | 38.60 | 0.0000 | There is a individual effect |
LR-both-time | 1353.99 | 0.0000 | There is a time effect |