Pain Processing and Vegetative Dysfunction in Fibromyalgia: A Study by Sympathetic Skin Response and Laser Evoked Potentials

Table 1

Demographic and clinical characteristics of fibromyalgia patients (FM) and controls. The results of ANOVA and chi-square tests are reported. FIQ: Fibromyalgia Impact Questionnaire; WPI: Wide Pain Index.

Diagnosis	Age	Sex	Illness duration	FIQ	WPI	DN4	SAS	SDS
FM
M	47.320	46 F 4 M	7.2	48.89	12.86	4.2	41.4	41.3
SD	13.1513		6.21	18.65	4	1.89	7.7	8.8
Controls
M	47.433	26 F 4 M					30.2	29.9
SD	14.9659						5.3	7.1
	ANOVA: F 1.25 n.s.	Chi-square 1.98 n.s.					ANOVA: F 11.68	F: 11.9