Table 2.
Multi-level confirmatory factor analyses (MCFAs) for measurement models
| Time 1 | Time 2 | Time 3 | Time 4 | Time 5 | Time 6 | |
|---|---|---|---|---|---|---|
| A. Models based on five constructs: safety climate, emotional exhaustion, safety compliance, morale, and depression | ||||||
| χ2 | 1024.10 | 744.80 | 868.44 | 889.31 | 936.85 | 728.84 |
| df | 381 | 381 | 381 | 381 | 381 | 381 |
| CFI | .874 | .911 | .894 | .905 | .885 | .902 |
| RMSEA | .051 | .037 | .043 | .043 | .045 | .036 |
| SRMR within | .056 | .059 | .063 | .057 | .061 | .064 |
| SRMR between | .085 | .101 | .062 | .038 | .048 | .058 |
| r (emotional exhaustion and depression) | .50 | .51 | .47 | .46 | .44 | .41 |
| B. Models in which emotional exhaustion and depression were merged | ||||||
| χ2 | 1208.38 | 992.17 | 1008.68 | 1105.70 | 1148.98 | 957.13 |
| df | 385 | 385 | 385 | 385 | 385 | 385 |
| CFI | .840 | .851 | .864 | .865 | .843 | .839 |
| RMSEA | .057 | .047 | .048 | .051 | .053 | .046 |
| SRMR within | .065 | .068 | .075 | .068 | .083 | .085 |
| SRMR between | .085 | .101 | .062 | .038 | .048 | .058 |
| A–B Model comparison | ||||||
| Δχ2 | 184.28 | 247.37 | 140.24 | 216.39 | 212.13 | 228.29 |
| Δ CFI | .03 | .06 | .03 | .04 | .04 | .06 |
All Δχ2 were statistically significant (p < .01) and all Δ CFI values were greater than .02 (Cheung & Rensvold, 2002), suggesting significant model fit deterioration after the merge of the emotional exhaustion and depression constructs