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Table 3 Pearson correlations between measures assessed in the sample

From: Reduced heart rate variability predicts fatigue severity in individuals with chronic fatigue syndrome/myalgic encephalomyelitis

Measures

NCQ

FIS-40

HADS

COMPASS-31

PSQI

.824**

.813**

.729**

.816**

NCQ

 

.942**

.796**

.852**

FIS-40

  

.843**

.839**

HADS

   

.796**

  1. Significance: **p < 0.001