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Table 2 Corrected item to total correlations for the Symptom Inventory Total Score and the Symptom Inventory Short-Form Score

From: Psychometric properties of the CDC Symptom Inventory for assessment of Chronic Fatigue Syndrome

Symptom Corrected item to total correlations
  Total score Short-form score
Sore throat .43  
Tender nodes .48  
Diarrhea .37  
Unusual fatigue after exertion .69 .64
Muscle aches .70 .64
Joint pain .54  
Feverishness .28  
Chills .52  
Unrefreshing sleep .77 .79
Sleeping problems .65 .70
Headaches .43  
Memory problems .62 .66
Concentration .59 .67
Nausea .40  
Stomach pain .32  
Sinus problems .51  
Shortness of breath .41  
Sensitivity to light .41  
Depression .52