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Table 1 Demographic characteristics and baseline scoring in the short-form McGill Pain Questionnaire of patients with neuropathic pain or neuropathic and nociceptive mixed pain observed in the study.

From: Cognitive impairment in patients with Fibromyalgia syndrome as assessed by the Mini-Mental State Examination

Variable FMS (n = 46) NeP (n = 92) MP (n = 92) p
Age (years) 50.8 (47.8-53.8) 50.9 (48.8-53.0) 50.7 (48.6-52.8) 0.989 (F = 0.01; df = 229)
Sex, female (%) 85 [71 - 94] 85 [76 - 91] 85 [76 - 91] 1.000 (X2 = 0.002; df = 2)
Time since diagnosis (years) 1.8 (1.3-2.3) 1.4 (0.7-2.1) 1.9 (1.2-2.6) 0.434 (F = 0.69; df = 229)
0 - 12 months (%) 52 [37 - 67] 75 [65 - 83] 61 [50 - 71] 0
12 - 24 months (%) 15 [6 - 29] 10 [5 - 18] 11 [5 - 19] 0
> 24 months (%) 33 [20 - 48] 15 [9 - 24] 28 [19 - 39] 0
Previous analgesic treatment (%) 30 [187-46] 65 [59-79] 67 [57-77] 0.001 (X2 = 19.68; df = 2)
Pain score (McGill)     
VAS (0 to 100): 70.8 (66.2-75.4) 71.7 (67.5-75.9) 72.6 (69.1-70.1) 0.849 (F = 0.16; df = 229)
PPI (0 to 5): 2.6 (2.3-2.9) 2.7 (2.5-3.0) 2.9 (2.7-3.0) 0.294 (F = 1.23; df = 229)
Self-perceived symptoms of;     
Anxiety (COVI; 0-15) 7.0 (6.2-7.9) 5.8 (5.2-6.4) 5.8 (5.2-6.3) 0.028 (F = 3.65; df = 229)
Depression (RASKIN; 0-15) 8.4 (7.4-9.4) 6.4 (5.7-7.1) 6.5 (5.9-7.1) 0.001 (F = 7.39; df = 229)
  1. FMS = Fibromyalgia Syndrome; NeP = Neurophatic Pain; MP = Mixed Pain; VAS = Visual Analogue Scale; PPI = Present Pain Intensity. Values are given as observed frequency, proportion, or mean (standard deviation) [95% confidence interval]. Except where noted, all differences are non-significant. F = F statistic (ANOVA); df = degree of freedom. X2 = Chi2 test.