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. Author manuscript; available in PMC: 2016 Feb 20.
Published in final edited form as: Health Psychol Behav Med. 2015 Feb 20;3(1):82–93. doi: 10.1080/21642850.2015.1014489

Table 3. Decision Tree Analysis Multiple Test on Repeated Measures of Individual Symptoms.

2,2 Threshold

Selected Symptom
(Symptom Group)
Number of Times the Symptom Group Was Used Total Use
As Node 1 As Node 2 As Node 3 As Node 4 As Node 5
Fatigue / Extreme tiredness 94 2 2 0 0 98
Difficulty finding the right word to say or expressing thoughts 1 1 74 0 0 76
Physically drained / sick after mild activity 4 64 1 1 0 70
Unrefreshing sleep 0 1 6 20 26 53
Joint pain 0 2 3 25 2 32
Sensitivity to noise 0 7 2 11 0 20
Muscle pain 0 0 1 6 12 19
Dead, heavy feeling after starting to exercise 1 8 0 0 0 9
Problems remembering things 0 8 0 0 0 8
Sensitivity to bright lights 0 4 2 1 0 7
Muscle weakness 0 0 1 4 0 5
Can only focus on one thing at a time 0 1 0 4 0 5

Average performance metrics across 100 trials

Sensitivity 95.2

Specificity 91.4

Accuracy 93.3