Table 5.
Results for the measurement invariance analysis of the PHQ-9 scale (n = 768).a
| Model | Invariance level | χ2 | gl | CFI | ΔCFI | RMSEA | ΔRMSEA |
|---|---|---|---|---|---|---|---|
| One-Factor | Configural | 166.78*** | 54 | 0.944 | -- | 0.074 | -- |
| Weak | 176.39*** | 62 | 0.943 | −0.001 | 0.070 | −0.004 | |
| Strong | 191.03*** | 70 | 0.940 | −0.003 | 0.067 | −0.003 | |
| Strict | 229.57*** | 79 | 0.925 | −0.015 | 0.071 | +0.004 | |
| Two-Factor | Configural | 144.27*** | 52 | 0.954 | -- | 0.068 | -- |
| Weak | 152.39*** | 59 | 0.954 | 0 | 0.064 | −0.004 | |
| Strong | 163.57*** | 66 | 0.952 | −0.002 | 0.062 | −0.002 | |
| Strict | 203.59*** | 75 | 0.936 | −0.016 | 0.067 | +0.005 |
a
Statistical significance levels: *p < 0.050, **p < 0.010, ***p < 0.001.