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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.