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Table 5 Correlation of Epworth scales with SAQ© factor scores, age, BMI, neck circumference, fatigue and wellness scores.

From: Sleep assessment in a population-based study of chronic fatigue syndrome

  Pearson correlation
SAQ© Factor  
   Sleep Apnea 0.26
   Restlessness 0.23
   Non-restorative 0.22
   Insomnia 0.11
   Excessive daytime sleepiness 0.78
Age 0.05
BMI 0.23
Neck circumference 0.10
Wellness score -0.26
Fatigue severity score 0.02