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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.