Table 2.
Hierarchical multiple regression model changes in the coefficient of determination for GWI health status (Model 1), and with DTS total score (Model 2)
| Measure | Model 1 | Model 2 |
|---|---|---|
| ΔR2 | ΔR2 | |
| RAND SF-36 | ||
| Physical functioning | 0.672**** | 0.024 |
| Physical rolea | 0.630**** | 0.017 |
| General health perceptions | 0.670**** | 0.038 |
| Energy/fatigue (vitality) | 0.652**** | 0.047 |
| Social functioning | 0.601**** | 0.053 |
| Emotional roleb | 0.632**** | 0.091** |
| Emotional well-being | 0.458**** | 0.140*** |
| Pain | 0.433**** | 0.080* |
| MFI | ||
| Physical fatigue | 0.536**** | 0.059 |
| Mental fatigue | 0.569**** | 0.011 |
| Reduced activity | 0.408**** | 0.097** |
| Reduced motivation | 0.416**** | 0.005 |
| General fatigue | 0.415**** | 0.094** |
*p < 0 .1, **p < 0.05, ***p < 0.01, ****p < 0.001
aPhysical role (role limitations due to physical health)
bEmotional role (role limitations due to emotional problems)