Table 2. Linear regressions examining association of fatigue with DIR performance across the three task conditions.
| DIR Alone | DIR PI | DIR CI | ||||
|---|---|---|---|---|---|---|
| β(RT) | β(accuracy) | β(RT) | β(accuracy) | β(RT) | β(accuracy) | |
| MS | ||||||
| FSS | -.317 | -.070 | .432 | -.131 | .559* | -.405* |
| BDI-II | .669* | .396 | -.119 | .417 | -.233 | .345 |
| ISS | .151 | .283 | .132 | .270 | .527* | .261 |
| Age | -.166 | .191 | .268 | .148 | -.270 | .198 |
| Controls | ||||||
| FSS | -.125 | -.319 | -.219 | .221 | -.371 | .351 |
| BDI-II | -.146 | .076 | .059 | .133 | -.125 | -.362 |
| Age | .301 | -.306 | .233 | -.486 | .448* | -.452* |
FSS=Fatigue Severity Scale; BDI-II= Beck depression inventory 2nd edition; ISS=Incapacity Status Scale; DIR=Delayed Item Recognition; PI=Partial Interference; CI=Complete Interference
Higher accuracy scores denote better performance
Higher RT scores denote worse performance
*
denotes p<0.05