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Table 1 Psychological and blood-test variables in controls and patients with FM

From: Localized 1H-NMR spectroscopy in patients with fibromyalgia: a controlled study of changes in cerebral glutamate/glutamine, inositol, choline, and N-acetylaspartate

Variables Healthy group (mean ± SD) FM group (mean ± SD) PValue
Psychological variables
PVAS 16.50 ± 5.79 63.0 ± 17.02 < 0.001
Sphigmo 170.50 ± 7.24 107.0 ± 25.84 < 0.001
MMSE 34.90 ± 0.31 30.60 ± 3.37 < 0.001
Catastroph 4.90 ± 2.02 27.0 ± 9.98 < 0.001
FIQ 17.50 ± 4.85 70.20 ± 10.50 < 0.001
HADS-Anx 0.70 ± 0.67 7.40 ± 0.69 < 0.001
HADS-Dep 0.60 ± 0.51 6.90 ± 0.87 < 0.001
Blood-test variables
Serotonin 273.50 ± 10.42 297.56 ± 249.70 0.449
GDH 47.10 ± 2.23 48.33 ± 23.51 0.568
Ammonium 17.40 ± 1.34 28.32 ± 9.26 < 0.001
  1. All calculations were performed by using the Mann-Whitney U test.
  2. Catastroph, Pain catastrophization scale; FIQ, Fibromyalgia Impact Questionnaire; GDH, glutamate dehydrogenase; HADS-Anx, Hospital Anxiety Depression Scale, subscale anxiety; HADS-Dep, Hospital Anxiety Depression Scale, subscale depression; MMSE, Mini Mental State Examination; PVAS, Pain Visual Analogue Scale; Sphigmo, pain assessed by sphygmomanometer.