Statistic | Recommended value | 22-item PPM-O | 13-item PPM-O |
---|---|---|---|
χ2 | NA | 357.23 | 130.46 |
χ2 p-value | <0.05 | >0.0001 | >0.0001 |
df | NA | 194 | 64 |
χ2/df | < or = 2 | 1.84 | 2.04 |
Goodness of fit index (GFI) | > or = 0.9 | 0.828 | 0.879 |
Comparative fit index (CFI) | > or = 0.9 | 0.841 | 0.855 |
Normed fit index (NFI) | > or = 0.9 | 0.717 | 0.757 |
Tucker-Lewis index (TLI) | > or = 0.9 | 0.811 | 0.824 |
Root mean square residual (RMR) | As close to 0 as possible | 0.048 | 0.054 |
Root mean square error of approximation (RMSEA) | < or = 0.08 | 0.075 (CI 0.062-0.087) | 0.083 (CI 0.062-0.103) |