Fitting indices of two-factor model and three-factor model of CGSQ for control group and patient group
| χ2/df | RMSEA | RMR | GFI | NFI | RFI | IFI | TLI | CFI | ||
| Control group | Two-factor | 13.908 | 0.184 | 0.058 | 0.611 | 0.730 | 0.699 | 0.745 | 0.714 | 0.744 |
| Three-factor | 4.169 | 0.109 | 0.039 | 0.776 | 0.708 | 0.670 | 0.761 | 0.728 | 0.759 | |
| Patient group | Two-factor | 2.644 | 0.112 | 0.123 | 0.727 | 0.799 | 0.775 | 0.864 | 0.847 | 0.863 |
| Three-factor | 1.564 | 0.065 | 0.068 | 0.841 | 0.882 | 0.867 | 0.954 | 0.948 | 0.954 |
CFI, Comparative Fit Index; CGSQ, Caregiver Strain Questionnaire; GFI, Goodness-of-Fit Index; IFI, Incremental Fit Index; NFI, Normed Fit Index; RFI, Relative Fit Index; RMR, root mean square residual; RMSEA, root mean square error of approximation; TLI, Tucker-Lewis Index.