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Table 2 Fibromyalgia key symptoms

From: Testing the effects of gentle vibrotactile stimulation on symptom relief in fibromyalgia

All patients (n = 63) Baseline (Bvs) Vibrotac. S. (VS) Baseline (Bsham) Sham (Bvs − VS) > (Bsham − Sham)
Pain 71.3 ± 13.1 54.4 ± 23.5 69.9 ± 15.1 62.5 ± 21.0 F = 6.5 p = 0.014
Fatigue 73.8 ± 13.7 53.1 ± 26.4 71.8 ± 15.5 64.3 ± 22.9 F = 12.0 p = 0.001
Cognitive symptoms 65.5 ± 18.1 62.0 ± 21.0 65.8 ± 18.2 64.1 ± 19.4 F = 1.6 p = 0.206
Vibrotactile S first (n = 33) Baseline (B1) Vibrotac. S. (VS) Baseline (B2) Sham (B1 − VS) > (B2 − Sham)
Pain 71.2 ± 10.4 48.0 ± 26.1 66.4 ± 16.3 62.8 ± 20.0 t = 4.0 p = 0.0003
Fatigue 74.4 ± 12.5 46.8 ± 27.8 69.1 ± 16.3 65.7 ± 21.9 t = 5.1 p = 0.00001
Cognitive symptoms 66.5 ± 18.0 61.9 ± 22.4 66.4 ± 18.1 63.9 ± 20.3 t = 0.9 p = 0.359
Sham first (n = 30) Baseline (B1) Sham Baseline (B2) Vibrotac. S. (VS) (B2 − VS) > (B1 − Sham)
Pain 73.7 ± 12.9 62.2 ± 22.4 71.3 ± 15.7 61.3 ± 18.3 t = − 0.3 p = 0.783
Fatigue 74.7 ± 14.3 62.7 ± 24.2 73.1 ± 15.0 60.1 ± 23.4 t = 0.2 p = 0.842
Cognitive symptoms 65.2 ± 18.6 64.4 ± 18.8 64.4 ± 18.5 62.1 ± 19.7 t = 0.9 p = 0.382
  (B1 − VS) > (B1 − Sham) (B2 − VS) > (B2 − Sham)  
Pain t = 2.2 p = 0.034 t = 1.5 p = 0.149  
Fatigue t = 2.9 p = 0.005 t = 2.3 p = 0.025  
Cognitive symptoms t = 1.9 p = 0.071 t = − 0.1 p = 0.911