Table 4. Measurement invariance for the two-factor model over time (n=5,949).
| Models | χ2 | df | RMSEA (90%CI) | Cfit | ΔRMSEA | CFI | ΔCFI |
|---|---|---|---|---|---|---|---|
| Equal form (step 1) | 265.258 | 32 | 0.035 (0.031-0.039) | 1.000 | 0.990 | ||
| Equal factor loadings (step 2) | 421.093 | 38 | 0.041 (0.038-0.045) | 1.000 | 0.006 | 0.984 | -0.006 |
| Equal indicator intercepts (step 3) | 604.241 | 42 | 0.047 (0.044-0.051) | 0.892 | 0.006 | 0.977 | -0.007 |
| Equal indicator error variances (step 4) | 595.097 | 48 | 0.044 (0.041-0.047) | 0.999 | 0.003 | 0.977 | 0.000 |
90%CI = 90% confidence interval; χ2 = chi-square (Satorra-Bentler); CFI = Comparative Fit Index; Cfit = p-value for RMSEA; df = degrees of freedom; RMSEA = root mean square error of approximation.