Association of high complement and low immunoglobulins with the clinical symptoms of patients with fibromyalgia

Table 1 Demographic and clinical characteristics

	HC (n = 30) (mean ± SEM)	Sex- and age-matched FM (n = 36) (mean ± SEM)	Total FM (n = 41) (mean ± SEM)	p value*
Sex (female, %)	90	89	78	0.88
Age (years)	42.3 ± 1.2	42.7 ± 1.8	43.2 ± 1.8	0.85
BMI (kg/m²)	21.9 ± 0.6	23.6 ± 0.8 ¹⁾	23.5 ± 0.8 ²⁾	0.18
BPI intensity	1.2 ± 0.2	6.0 ± 0.2	6.0 ± 0.2	< 0.001
BPI interference	0.4 ± 0.1	6.2 ± 0.3	6.0 ± 0.3	< 0.001
Low back pain	13.1 ± 4.0	63.5 ± 5.6	62.8 ± 5.3	< 0.001
Knee pain	7.5 ± 3.1	53.3 ± 5.5	51.1 ± 5.4	< 0.001
Fatigue	32.3 ± 5.3	73.1 ± 4.0	73.3 ± 3.6	< 0.001
CES-D	5.2 ± 1.5	25.7 ± 1.4	24.9 ± 1.4	< 0.001
STAI (state)	34.8 ± 1.9	53.6 ± 1.9	52.7 ± 1.8	< 0.001
STAI (trait)	36.1 ± 1.6	56.9 ± 1.8	55.7 ± 1.7 ³⁾	< 0.001

1) n = 31, 2) n = 35, 3) n = 40
^* p values for comparison of HC and FM(n = 36) calculated with the Student t-test, Kruskal–Wallis test, or Pearson’s chi-squared test (Sex)

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