Table 2.
Results from the assessment of longitudinal measurement invariance
| X2 (df) | SBΔX2 (Δdf) | SB ΔX2p value | CFI | ΔCFI | RMSEA [90% CI] | ΔRMSEA | SRMR | ΔSRMR | |
|---|---|---|---|---|---|---|---|---|---|
| Configural | 219.244 (134) | 0.986 | 0.018 [0.014, 0.022] | 0.025 | |||||
| Metric | 234.182 (146) | 15.464 (12) | 0.217 | 0.986 | 0.000 | 0.018 [0.013, 0.022] | 0.000 | 0.027 | 0.002 |
| Scalar | 548.207 (158) | 382.676 (12) | 0.000 | 0.937 | −0.049 | 0.036 [0.033, 0.039] | 0.018 | 0.038 | 0.011 |
| Scalar partial 1a | 431.045 (157) | 237.621 (11) | 0.000 | 0.955 | −0.031 | 0.030 [0.027, 0.034] | 0.012 | 0.035 | 0.008 |
| Scalar partial 2a | 352.631 (156) | 107.449 (10) | 0.000 | 0.972 | −0.014 | 0.024 [0.020, 0.027] | 0.006 | 0.030 | 0.003 |
| Scalar partial 3a | 267.571 (155) | 37.734 (9) | 0.000 | 0.982 | −0.004 | 0.019 [0.015, 0.023] | 0.001 | 0.028 | 0.001 |
| Scalar partial 4a | 251.131 (154) | 17.908 (8) | 0.022 | 0.984 | −0.002 | 0.018 [0.014, 0.022] | 0.000 | 0.027 | 0.000 |
SB, Satorra-Bentler scaled; CFI, comparative fit index; RMSEA, root mean square error of approximation; SRMR, standardized root mean residual
aModel comparisons are made with the metric invariance model