Table 2.
Results of the confirmatory factor analysis of the OMS-HC
| χ2 | χ2/df | RMSEA | 95% CI of RMSEA | CFI | TLI | |
|---|---|---|---|---|---|---|
| Original 15-item scale | 129.602 | 1.45 | 0.048 | 0.030–0.065 | 0.818 | 0.780 |
| Unidimensional 15-item scale | 173.562 | 1.93 | 0.066 | 0.051–0.081 | 0.642 | 0.583 |
| 3 correlated factors based on EFA results (15 items) | 123.479 | 1.45 | 0.045 | 0.024–0.062 | 0.844 | 0.812 |
| 3 correlated factors with the deletion of 1 item based on EFA results (14 items) | 103.475 | 1.39 | 0.043 | 0.021–0.062 | 0.867 | 0.836 |
| Bifactor solution (14 items) | 71.055 | 1.13 | 0.025 | 0.000–0.050 | 0.961 | 0.944 |
The confirmatory factor analysis was performed by using the maximum likelihood estimation with robust standard errors and a mean- and variance adjusted.
χ2: chi-square, df: the degree of freedom, RMSEA: root mean square error of approximation, CI Confidence interval, CFI Comparative fit index, TLI Tucker-Lewis Index.