Table 3.

Comparison of clinical characteristics between migraineurs with and without hypoechogenicity of BR

	Normal BR (N = 32)	Hypoechogenic BR (N = 10)	P value
Gender (F:M)	22:10	4:6	0.102#
Age, year	33.5 ± 8.7 (24–50)	35.8 ± 10.7 (26–55)	0.494*
Attack frequency	1.0 (1.0–2.8)	2.0 (1.0–11.3)	0.212^
Disease duration	7.8 ± 8.0 (0.5–20)	8.5 ± 6.8 (6–20)	0.791*
HAM-D score	6.1 ± 4.6 (0–14)	18.6 ± 4.6 (11–24)	0.000*
HADS-D score	4.6 ± 2.7 (0–11)	12.6 ± 3.8 (7–18)	0.000*

Values are given as mean ± standard deviation (minimum-maximum). Attack frequency values are given as migraine headache attack times per month (median, IQR). # chi-square test, * t-test, ^ Mann-Whitney U test