Table 3 Goodness-of-fit indices for measurement invariance analyses across visit
From: Disablement in the Physically Active Scale Short Form-8: psychometric evaluation
χ2 | df | χ2diff (dfdiff) | CFI | CFIdiff | TLI | RMSEA | |
|---|---|---|---|---|---|---|---|
Visit 1 | 20.97 | 19 | – | .997 | – | .995 | .023 |
Visit 2 | 30.40 | 19 | – | .984 | – | .976 | .054 |
Visit 3 | 30.66 | 19 | – | .988 | – | .982 | .055 |
Configural (equal form) | 278.46 | 213 | – | .981 | – | .976 | .039 |
Metric (equal loadings) | 294.18 | 225 | 15.72(12) | .980 | .001 | .976 | .039 |
Equal factor variances | 310.43 | 229 | 31.97(16) | .977 | .003 | .972 | .042 |
Scalar (equal indicator intercepts) | 327.38 | 237 | 48.92(24) | .974 | .006 | .970 | .043 |
Equal latent means | 452.23 | 241 | 173.77(28) | .940 | .04 | .931 | .065 |