Table 1. Descriptive data for 29 FM patients and 31 HC, average values and range are presented.

	FM	HC	Group differences
Age (years)	49.8 (25–64)	46.3 (20–63)	NS
FM dur (years)	8.9 (0.5–19)	NA	NA
Pain VAS (mm)	45.3 (5–92)	0.6 (0–10)	P<0.0001
FIQ	63.1 (42.5–85.0)	6.8 (0–22.8)	P<0.0001
HADS-D	7.3 (3.0–16.3)	2.1 (0–7.0)	P<0.0001
HADS-A	8.8 (0–18)	3.2 (0–13.0)	P<0.0001
SF-36 PCS	30.2 (11.8–46.7)	55.2 (48.5–62.3)	P<0.0001
SF-36 MCS	36.5 (18.4–58.9)	50.6 (31.6–58.6)	P<0.0001

FM dur = duration of FM, Pain VAS = pain intensity rated on 100 mm visual analogue scale, FIQ = fibromyalgia impact questionnaire, HADS-D = Hospital anxiety and depression scale, depression ratings, HADS-A = Hospital anxiety and depression scale, anxiety ratings, SF-36 PCS = short form 36 physical compact score, SF-36 MCS = short form 36 mental compact score (original 0–100 scoring algorithms based on the summated ratings method). NA = not applicable.