The Revised Fibromyalgia Impact Questionnaire (FIQR): validation and psychometric properties

Table 3 Demographics of fibromyalgia patients and other groups

	Fibromyalgia	RA/SLE	Major depression^a	Healthy controls
Number analyzed	202	51	11	213
Age, years	51 ± 10.5	49 ± 13.1^a	46 ± 11.4^b	43 ± 14.0^c
Gender ratio, female/male	16/1	ND	5 ± 1	13 ± 1
Number of pain locations	16 ± 4.9	7.0 ± 4.4	4.0 ± 2.5	1.6 ± 2.3

In comparison with the fibromyalgia patients: ^aP = 0.25; ^bP = 0.13; ^cP < 0.001. ND, not determined; RA/SLE, rheumatoid arthritis/systemic lupus erythematosus.

ISSN: 1478-6362