Table 2.
Means, standard deviations (SD), range, Cronbach’s alpha’s (α) and Pearson-correlations of all measures
| Mean (SD) | Range | α | 2 | 3 | 4 | 5 | 6 | |
|---|---|---|---|---|---|---|---|---|
| 1. Disease severity (EDSS) | 4.0 (2.2) | 0–8 | – | 0.27** | 0.17* | 0.25** | 0.26** | –0.58** |
| 2. Fatigue (AFQ) | 19.8 (6.6) | 4–28 | 0.91 | – | 0.56** | 0.37** | 0.49** | –0.60** |
| 3. Catastrophizing about fatigue (FCS) | 20.4 (15.1) | 0–64 | 0.91 | – | – | 0.64** | 0.57** | –0.57** |
| 4. Fatigue-related fear and avoidance (TSK-F) | 37.9 (9.4) | 17–61 | 0.82 | – | – | – | 0.50** | –0.56** |
| 5. Depression (HADS-D) | 6.0 (4.2) | 0–21 | 0.83 | – | – | – | – | –0.57** |
| 6. Physical disability (SF-36) | 246.3 (87.0) | 15–390 | 0.91 | – | – | – | – | – |
EDSS Expanded Disability Status Scale, AFQ Abbreviated Fatigue Questionnaire, FCS Fatigue Catastrophizing Scale, TSK-F Fatigue Version of the Tampa Scale for Kinesiophobia, HADS Hospital Anxiety and Depression Scale, SF-36 Short Form Health Survey
* P < 0.01; ** P < 0.001