Chinese Herbal Therapy for Chronic Tension-Type Headache

Table 1

Baseline characteristics.

Characteristics
All patients ()	132
Male (%)	35 (26.5)
Age mean (SD)	40.5 (13.2)
Body mass index mean (SD)	23.3 (3.5)
Duration (years) mean (SD)	8.5 (2.8)
Days with headache per four weeks mean (SD)	16.0 (0.5)
Duration of each attack (hours) mean (SD)	9.8 (3.5)
Headache score mean (SD)	6.0 (3.3)
Days with medication per four weeks mean (SD)	13.6 (2.2)