Table 6.
Measurement invariance for the EAT-19 5-factor model by language and BMI categories in combined sample (Sample 1 and Sample 2)
| Descriptions | χ2 (df) | CFI | TLI | RMSEA | Ref Model | Δχ2(df) | ∆ CFI | ∆TLI | ∆RMSEA | |
|---|---|---|---|---|---|---|---|---|---|---|
| Multi-group Analysis by Language (N = 2270) | ||||||||||
| Model 1 | Equal Form (Unrestricted) | 1741.53 (284) | 0.912 | 0.895 | 0.067 | – | – | – | – | – |
| Model 2 | Equal loadings (Metric) | 1780.09 (298) | 0.911 | 0.898 | 0.066 | 1 | 38.56 (14) | −.001 | +.003 | −.001 |
| Model 3 | Equal loadings & intercepts (Scalar Invariance) | 2033.66 (317) | 0.897 | 0.889 | 0.069 | 2 | 253.57(19) | −.014 | −.009 | +.003 |
| Multi-group Analysis by BMI (N = 2048) | ||||||||||
| Model 1 | Equal Form (Unrestricted) | 1606.04 (426) | 0.905 | 0.885 | 0.064 | – | – | – | – | – |
| Model 2 | Equal loadings (Metric) | 1737.03 (454) | 0.896 | 0.883 | 0.064 | 1 | 131.00(28) | − 0.009 | −0.002 | 0.000 |
| Model 3 | Equal loadings & Intercepts (Scalar Invariance) | 3196.09 (492) | 0.782 | 0.772 | 0.090 | 2 | 1459.06(38) | −0.114 | − 0.111 | + 0.026 |
Note. CFI comparative fit index, TLI Tucker-Lewis index, CI confidence interval, RMSEA Root Mean Square Error of Approximation; Ref model is the reference model for the measurement invariance comparison; χ2 = Chi-squared Statistic, df = degrees of freedom