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Table 4 Subjective scores on Visual Analogue Scale (VAS) of pain (only fibromyalgia [FM] patients) and perceived general tension at arrival, after laboratory relaxation, and after mental stress test for FM patients and healthy controls

From: Trapezius activity of fibromyalgia patients is enhanced in stressful situations, but is similar to healthy controls in a quiet naturalistic setting: a case-control study

  Arrival Laboratory relaxation Mental stress pa
Pain within FM group     
Shoulder/neck pain 28 (8–45) 22 (7–29) 39 (28–47)c <0.001
Low back pain 12 (0–25) 7 (0–11) 7 (0–17) 0.09
pb 0.06 0.002 <0.001  
General tension     
FM patients 32 (13–42) 17 (7–25) 52 (37–58)d <0.001
Controls 10 (5–24)e 5 (2–8) 40 (21–52)f <0.001
pb 0.007 <0.001 0.13  
  1. Values are median (95%CI).
  2. aFriedman’s ANOVA; bWilcoxon signed rank test; cdifferent from Laboratory relaxation (p<0.001); ddifferent from arrival (p=0.03) and Laboratory relaxation (p<0.001); edifferent from Laboratory relaxation (p<0.001) and mental stress (p<0.001); fdifferent from Laboratory relaxation (p<0.001).