Table 2 Measurement invariance of the two-factor structure of the SF-12v2
From: The English and Chinese language versions of the Short Form 12-item Health Survey are equivalent
Model | Level of measurement invariance | Degrees of freedom | χ2 statistic | RMSEA | CFI | ΔRMSEA | ΔCFI |
|---|---|---|---|---|---|---|---|
M1: Same factor pattern | 96 | 283.5 | 0.062 | 0.96 | – | – | |
M2: Same factor loadings, versus M1 | Metric invariance | 106 | 327.5 | 0.065 | 0.95 | 0.003 | 0.01 |
M3: Same factor loadings, intercepts, versus M2 | Scalar invariance | 116 | 513.4 | 0.083 | 0.91 | 0.018 | 0.04 |
M4: Same factor loadings, intercepts (partial),a versus M2 | Partial scalar invariance | 112 | 366.8 | 0.067 | 0.94 | 0.002 | 0.01 |
M5: Same factor loadings, intercepts (partial),a residual variances, versus M4 | Partial strict invariance | 124 | 446.8 | 0.072 | 0.93 | 0.005 | 0.01 |