Table 1.

Descriptive of age, Body Mass Index (BMI), depression, anxiety, fatigue - and fibromyalgia scores in CFS, FM and controls.

Parameter	CFS				FM				Control				pa
	(n ​= ​49)				(n ​= ​58)				(n ​= ​53)
	Missing	M (SD)	Mdn	Range	Missing	M (SD)	Mdn	Range	Missing	M (SD)	Mdn	Range
	(n)			(min– max)	(n)			(min– max)	(n)			(min– max)
Age	0	33.8 (11.3)	35.0	18–60	0	42.0 (9.1)	42.5	22–60	0	39.4 (10.4)	39.0	23–59	<.001
BMI	2	24.0 (3.6)	23.1	18.1–34.6	1	26.7 (5.6)	25.7	16.3–40.4	0	24.7 (4.0)	23.8	16.3–41.7	.017
HADS depression	0	6.0 (4.2)	5.0	0–17	1	6.4 (3.9)	6.0	0–16	1	1.3 (1.8)	1.0	0–8	<.001
HADS anxiety	0	5.9 (4.6)	5.0	0–19	1	8.4 (4.1)	8.0	0–17	1	3.2 (2.6)	3.0	0–10	<.001
Fatigue score	0	36.5 (5.3)	37.0	23–44	1	33.5 (5.3)	34.0	18–44	1	21.3 (3.2)	21.0	14–33	<.001
Pain NRS	0	3.9 (2.0)	4.0	0–9	0	6.0 (1.8)	6.0	0–10	2	0.9 (1.2)	1.0	0–5	<.001
FS score	0	15.2 (5.5)	13.0	7–29	1	20.1 (5.2)	20.0	3–30	1	3.1 (2.5)	3.0	0–11	<.001

Note: BMI ​= ​body mass index. HADS = Hospital Anxiety and Depression Scale. FS = Fibromyalgia Severity.

^aKruskall-Wallis test.