Table 1: Goodness-of-fit indices of models for the PHQ-9 (N=252).
| Model |
k |
χ² |
df |
χ²/df |
CFI |
GFI |
RMSEA (90% CI) |
SRMR |
| Model 1 |
9 |
88.0* |
28 |
3.1 |
0.88 |
0.95 |
0.095 (0.073-0.117) |
0.065 |
| Model 2a |
9 |
80.9* |
27 |
3.0 |
0.90 |
0.95 |
0.092 (0.069-0.115) |
0.063 |
| Model 2b |
9 |
44.3* |
26 |
1.7 |
0.97 |
0.98 |
0.053 (0.024-0.079) |
0.044 |
| Model 2c |
9 |
87.8* |
27 |
3.3 |
0.88 |
0.95 |
0.097 (0.075-0.120) |
0.065 |
Notes: k=number of items; df=degrees of freedom; CFI=comparative fit index; GFI=goodness of fit index; RMSEA=root mean square error of approximation; SRMR=standardized root mean residual.
*p < 0.01.