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Table 1 Median and range values for clinical neck-shoulder pain intensity ratings, size of pain areas and different psychological instruments for the trapezius myalgia group (NSP) and for the controls (CON)

From: An increased response to experimental muscle pain is related to psychological status in women with chronic non-traumatic neck-shoulder pain

  NSP (n = 19) Median (range) CON (n = 30) Median (range) p-value
Clinical neck pain intensity (VAS mm) 69 (40-90) 0 (0-20) <.001
Clinical shoulder pain intensity (VAS mm) 67 (19-88) 0 (0-3) <.001
Pain duration (months) 120 (36-273) NA  
Current pain area size (mm2) 788 (150-3616) NA  
Worst pain area size (mm2) 1658 (433-4344) NA  
Least pain area size (mm2) 420 (13-1829) NA  
Awakening problems (KSQ-Aw) 2 (.3-3.3) 1 (0-2.7) <.001
Sleep disturbances (KSQ-Dst) 2 (1-3.5) 1 (0-3.5) <.001
Daytime sleepiness (KSQ-Sd) 1.4 (.2-2.6) .6 (0-2.2) <.001
Depression (HADS-D) 3 (1-13) 1 (0-5) <.001
Anxiety (HADS-A) 4 (0-17) 2 (0-10) .003
Anxiety sensitivity (ASI) 10 (1-33) 8 (2-35) .225
Pain anxiety (PASS-20) 37 (17-70) NA  
Catastrophizing (PCS) 15 (6-29) 2 (0-21) <.001
Fear-avoidance, physical activity (FABQphysical) 10 (4-17) NA  
Fear-avoidance, work (FABQwork) 22 (0-42) NA  
Pain disability (PDI) 25 (13-56) NA  
  1. P-values for differences between groups were derived from Mann-Whitney U-tests. NA denotes not applicable.
  2. Abbreviations: KSQ = Karolinska sleep questionnaire, KSQ-Aw = KSQ- subscale "awakening problems", KSQ-Dst = KSQ- subscale "daytime sleepiness", KSW-Sd = KSQ- subscale "sleep disturbances", HADS = hospital anxiety and depression scale; HADS-D = depression subscale of HADS, HADS-A = anxiety subscale of HADS, ASI = anxiety sensitivity index, PASS = pain anxiety symptoms scale, PCS = pain catastrophizing scale; FABQ = fear-avoidance beliefs questionnaire, FABQphysical = subscale fear-avoidance beliefs for physical activity of FABQ, FABQwork = subscale fear-avoidance beliefs for work of FABQ, PDI = pain disability index.