Table 5.
Simultaneous cross-group and longitudinal invariance results.
| Model | χ2 (df) | p | χ2diff | p | Δdf | RMSEA [90% CI] | CFI | ΔCFI |
|---|---|---|---|---|---|---|---|---|
| PASE | ||||||||
| M1 | 151.412 (94) | <0.001 | – | – | – | 0.035 [0.024, 0.045] | 0.992 | – |
| M2 | 186.943 (116) | <0.001 | 39.034 | <0.001 | 22 | 0.035 [0.025, 0.044] | 0.990 | -0.002 |
| M3 | 170.224 (112) | <0.001 | 24.308 | 0.145 | 18 | 0.032 [0.022, 0.041] | 0.991 | 0.001 |
| SEEBa | ||||||||
| M1 | 115.659 (58) | <0.001 | – | – | – | 0.044 [0.032, 0.056] | 0.987 | – |
| M2 | 163.702 (76) | <0.001 | 48.136 | <0.001 | 18 | 0.048 [0.038, 0.058] | 0.981 | -0.006 |
χ2diff, adjusted χ2 difference test; df, degrees of freedom; PASE, Physical Activity Self-Efficacy Scale; SEEB, Self-Efficacy for Exercise Behaviors Scale; RMSEA, root mean square error of approximation; 90% CI, 90% confidence interval for RMSEA; CFI, comparative fit index; ΔCFI, change in comparative fit index; M1, configural model; M2, metric model; M3, partial metric model. aSEEB model results from modified 5-item scale without items 2 and 3.