Table 3.
Fit of the factor models of the combined Social Phobia Scale (SPS) and the Social Interaction Anxiety Scale (SIAS).
| Model (M) | χ2 | df | RMSEA [90% CI] | CFI | Models Compared | ||
|---|---|---|---|---|---|---|---|
| ΔM | Δdf | Δχ2 | |||||
| One-factor (O) | 3247.532*** | 740 | 0.080 [0.077,0.083] | 0.890 | – | ||
| Two-factor (T) | 2153.528*** | 739 | 0.060 [0.057,0.063] | 0.938 | O–T | 1 | 129.396*** |
| Bifactor (B) | 1463.617*** | 700 | 0.046 [0.042,0.049] | 0.967 | O–B | 40 | 861.046*** |
| T–B | 39 | 474.252*** | |||||
CFI, comparative fit index; CI, confidence interval; RMSEA, root mean square error of approximation.
***
p < 0.001.