Model | χ2 | df | χ2/df | RMSEA | CFI | NNFI | SRMR |
1) Four-factor model: POQ; WE; WT; FWSS; | 88.66 | 48 | 1.85 | 0.06 | 0.98 | 0.97 | 0.04 |
2) Three -factor model: POQ; WT + WE; FWSS; | 282.09 | 51 | 5.53 | 0.15 | 0.87 | 0.83 | 0.11 |
3) Two-factor model: POQ + FWSS; WE + WT; | 355.38 | 53 | 6.71 | 0.17 | 0.83 | 0.79 | 0.14 |
4) One-factor model: POQ + WE + WT + FWSS; | 1001.18 | 54 | 18.54 | 0.29 | 0.47 | 0.36 | 0.23 |