. Author manuscript; available in PMC: 2013 Jan 10.

Published in final edited form as: Cephalalgia. 2010 Apr 7;31(1):6–12. doi: 10.1177/0333102410365108

Table 1.

Demographics and other variables by headache group Controls

	Controls (n = 20) median (min–max)	Episodic migraine (n = 20) median (min–max)	Chronic migraine (n = 20) median (min–max)
Age years	35.5 (23–62)	31.5 (18–52)	31 (19–47)
Female n (%)	16 (80)	15 (75)	18 (90)
Current pain level	0 (0–0)	0 (0–0)	1.5 (0–8)^a,^b
Headache frequency (days/month)	1 (0–2)	5.5 (1–8)^a	20 (15–30)^a,^b
Days between last headache and QST^c	14 (3–30)	7 (2–20)^a	0 (0–7)^a,^b
Prophylactic medications n (%)	0 (0)	4 (20)	13 (65)^a,^b
MIDAS	0 (0–4)	10.5 (1–34)^a	56.5 (5–195)^a,^b
State anxiety	49 (39–58)	49 (34–56)	48 (32–56)
Trait anxiety	46 (39–52)	45 (41–53)	45.5 (32–58)
BDI	2 (0–9)	4 (0–13)	5.5 (0–32)
ASC-12 at testing	0 (0–4)	0.5 (0–10)^a	0 (0–7)
ASC-12 during headache^c	0 (0–6)	6.5 (0–18)^a	7 (0–16)^a

P<0.05 versus control subjects.

P<0.05 chronic versus episodic migraine subjects.

Twelve control subjects had very infrequent tension-type headaches; thus data for allodynia symptoms during headache and for days between last headache and QST testing were restricted to these 12 control subjects.