Table 1.

Basal characteristics of subjects.

	Treatment (N = 37)	Placebo (N = 39)	P value*
Age (years)	45.6 ± 9.9	46.8 ± 10.3	0.615
Age of onset of hair loss (years)	34.2 ± 8.6	36.8 ± 9.8	0.223
The Norwood-Hamilton grade			0.373
Stage 2	8 (21.6)	4 (10.3)
Stage 3	5 (13.5)	2 (5.1)
Stage 3V	11 (29.7)	15 (38.5)
Stage 4	7 (18.9)	8 (20.5)
Stage 5	6 (16.2)	10 (25.6)
Family history of androgenetic alopecia	27 (73.0)	27 (69.2)	0.719
Smoking (pack-year)	5.9 ± 8.8	2.6 ± 6.4	0.067
Body mass index (kg/m2)	24.7 ± 2.9	24.5 ± 2.9	0.734

Data are expressed as means ± SD or frequency (percent).

*Two-sample Student's t-test or chi-square test.