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Table 1 Subject characteristics

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

  FM patients Controls
  Mean (SD), range Mean (SD), range
Age (years) 51.8 (8.5), 38-64 52.4 (8.7), 37-64
Body mass index (kg/m2) 26.7 (5.3), 17.8-38.9 24.6 (3.3), 20.5-35.0
No. of tender points 15.7 (2.2), 11-18 Not Addressed
Years since diagnosis 5.5 (6.3), 0-26 Not Addressed
Years since first symptoms 11.6 (6.8), 3-33 Not Addressed
  % (n) % (n)
Employment fraction ≥50% 27 (7) 88 (22)
Smokers 27 (7) 24 (6)
Exercise (≥1 session per week) 96 (25) 88 (22)
  1. Descriptive statistics for demographic and other background variables of the fibromyalgia (FM) patients and the healthy controls.