Table 4.
Adaptation degree of structural equation model after modification.
| Statistical inspection quantity | Fitness reference standard or critical value | Test results | Model fitness determination |
|---|---|---|---|
| Absolute fitness index | |||
| X 2 value | Significance probability value p > 0.05 | 15.885 p > 0.05 | Y |
| Goodness of fit index | >0.90 | 0.988 | Y |
| Goodness of fit index after adjustments | >0.90 | 0.961 | Y |
| Root mean square residual and square root | <0.05 | 1.485 | N |
| Standardized root mean square residual and square root | 0.0254 | Y | |
| Root mean square error of approximation and square root | <0.05 (good fitness), <0.08 (reasonable fitness) | 0.037 | Y |
|
| |||
| Value added fitness index | |||
| Standard fitness index | >0.90 | 0.988 | Y |
| Nonstandard fitting index | >0.90 | 0.990 | Y |
| Value added fitness index | >0.90 | 0.996 | Y |
| Simple fitness index | |||
| Critical number of samples (CN value) | >200 | 402 | Y |
| NC value (X2 degree of freedom ratio) | 1 < NC < 3 indicates that the model has simple fitness and NC > 5 indicates that the model needs modification | 1.444 | Y |