Efficacy and Safety of a Low-level Laser Device in the Treatment of Male and Female Pattern Hair Loss: A Multicenter, Randomized, Sham Device-controlled, Double-blind Study

Table 1 Demographic characteristics of female subjects at baseline for the 9- and 12-beam lasercomb trials

	Trial #1 (n = 65)			Trial #2 (n = 57)
	9-beam lasercomb	Sham	p value	12-beam lasercomb	Sham	p value
Number of subjects	43	22		39	18
Age (years)			0.8261			0.9102
Mean age (SD)	49.3 (9.1)	49.8 (7.3)		48.7 (10.2)	49.1 (8.3)
Median age	52	49		50	49
Range	29–60	37–60		26–61	33–60
Race, n (%)			1.0000			1.0000
Caucasian	39 (90.7 %)	20 (90.9 %)		37 (94.9 %)	18 (100.0 %)
African American	1 (2.3 %)	0 (0 %)		1 (2.6 %)	0 (0 %)
Native American	0 (0 %)	0 (0 %)		0 (0 %)	0 (0 %)
Alaska Native	0 (0 %)	0 (0 %)		0 (0 %)	0 (0 %)
Asia/Pacific Islander	2 (4.7 %)	1 (4.5 %)		1 (2.6 %)	0 (0 %)
Other	1 (2.3 %)	1 (4.5 %)		0 (0 %)	0 (0 %)
Ethnicity, n (%)			0.2773			1.0000
Hispanic or Latino	13 (30.2 %)	10 (45.5 %)		10 (25.6 %)	4 (22.2 %)
Not Hispanic or Latino	30 (69.8 %)	12 (54.5 %)		29 (74.4 %)	14 (77.8 %)
Ludwig/Savin classification, n (%)			0.6513			0.2926
I-4	12 (27.9 %)	3 (13.6 %)		21 (53.8 %)	6 (33.3 %)
II-1	11 (25.6 %)	7 (31.8 %)		11 (28.2 %)	6 (33.3 %)
II-2	15 (34.9 %)	9 (40.9 %)		6 (15.4 %)	4 (22.2 %)
Frontal	5 (11.6 %)	3 (13.6 %)		1 (2.6 %)	2 (11.1 %)
Fitzpatrick skin type, n (%)			1.0000			0.7606
I	0 (0 %)	0 (0 %)		2 (5.1 %)	0 (0 %)
II	15 (34.9 %)	7 (31.8 %)		11 (28.2 %)	4 (22.2 %)
III	20 (46.5 %)	11 (50.0 %)		14 (35.9 %)	9 (50.0 %)
IV	8 (18.6 %)	4 (18.2 %)		12 (30.8 %)	5 (27.8 %)
Mean baseline hair count^a (SD)	162.6 (46.2)	155.7 (43.5)		142.2 (40.5)	168.4 (41.1)