Table 1.

Subject demographics. Notes: The median and range are shown for age, sex, VDS, and number of headache days in the past 3 months. The p values represent two-tailed t test.

Variable	MwA (n = 10)	HAf (n = 10)	p value
Age (y)	34 (25–37)	28 (25–41)	0.9
Sex	M 1, F 9	M 4, F 6	0.1
VDS	15 (5–36)	4 (0–6)	0.001
No. of headache days/3 months	11 (0–30)	1 (0–4)	0.0008