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Table 3 Mean and standard error of the fatigue scales and standardized discriminant function coefficients (SCFC)

From: The dimensionality of fatigue in Parkinson’s disease

Variable Control mean (SE) PD mean (SE) SCFC
1. Parkinson Fatigue Scale, PFS 26.8 (3.6) 49.9 (3.6) 0.86
2. Fatigue Severity Scale, FSS 21.9 (3.6) 38.1 (3.1) 0.44
3. Visual Analog Fatigue Scale, VAFS 7.7 (0.7) 5.6 (0.5) 0.42
4. Functional Assessment of Chronic Illness Therapy Fatigue Scale, FACIT-F 43.9 (1.6) 31.5 (2.6) − 0.09
  1. The PD group agreed more strongly than the Control group that they experienced higher levels of fatigue. The standardized discriminant function coefficients (SCFC) revealed that the PFS scale contributed the most to classifying subjects as healthy controls or PD. The FACIT-F contributed the least to the classification