Table 5.
Known group validity for the Pittsburgh Fatigability Scale (PFS).
| Fibromyalgia M (SE) | Multiple sclerosis M (SE) | Healthy adults M (SE) | F value | ηP2 | p value | |
|---|---|---|---|---|---|---|
| PFS Physicala,b | 30.57 (1.49) | 28.24 (1.30) | 14.70 (0.97) | 62.35 | 0.44 | <0.0001 |
| PFS Mentala,b | 22.84 (1.74) | 20.57 (1.53) | 9.96 (1.15) | 28.12 | 0.27 | <0.0001 |
SE: standard error; PFS: Pittsburgh Fatigability Scale.
Marginal means and standard errors are presented, adjusting for gender and age of participants; F value and p value are based on the type III sum of squares for the group variable; ηp2 = partial eta-squared effect size.
a
Fibromyalgia differs in healthy adults.
b
Multiple sclerosis differs in healthy adults.