Table 5.
Measurement invariance testing by age category (N = 73,816).
| Models | df | CFI a | TLI a | RMSEA a | ΔCFI | ΔTLI | ΔRMSEA | Model Comparisons |
|---|---|---|---|---|---|---|---|---|
| WHO-5 | ||||||||
| 1. Configural | 15 | 0.981 | 0.963 | 0.071 | — | — | — | — |
| WHO-4 b | ||||||||
| 1. Configural | 6 | 0.997 | 0.992 | 0.037 | — | — | — | — |
| 2. Metric | 12 | 0.996 | 0.994 | 0.030 | −0.001 | 0.002 | −0.007 | 2 vs. 1 |
| 3. Scalar | 18 | 0.987 | 0.987 | 0.045 | −0.009 | −0.007 | 0.015 | 3 vs. 2 |
a Robust estimates are reported. b Item 1 was excluded. Bold values indicate invariance is met. CFI = comparative fit index; TLI = Tucker Lewis Index; RMSEA = root mean square error of approximation.