Table 2.

Demographic characteristics of male subjects at baseline for the 7-, 9-, or 12-beam lasercomb trials

	Trial #3 (n = 38)			Trial #4 (n = 65)
	7-beam lasercomb	Sham	p value	9-beam lasercomb	12-beam lasercomb	Sham	p value
Number of subjects	24	14		21	22	22
Age (years)			0.0327				0.7100
Mean age (SD)	47.8 (9.0)	40.9 (9.5)		45.6 (9.3)	47.9 (9.6)	45.9 (10.4)
Median age	48	41.5		50	50.5	47
Range	26–59	25–55		26–58	26–59	30–61
Race, n (%)			1.0000				1.0000
Caucasian	23 (95.8 %)	13 (92.9 %)		21 (100.0 %)	21 (95.5 %)	21 (95.5 %)
African American	0 (0 %)	0 (0 %)		0 (0 %)	0 (0 %)	0 (0 %)
Native American	0 (0 %)	0 (0 %)		0 (0 %)	0 (0 %)	0 (0 %)
Alaska native	0 (0 %)	0 (0 %)		0 (0 %)	0 (0 %)	0 (0 %)
Asia/Pacific islander	0 (0 %)	0 (0 %)		0 (0 %)	0 (0 %)	1 (4.5 %)
Other	1 (4.2 %)	1 (7.1 %)		0 (0 %)	1 (4.5 %)	0 (0 %)
Ethnicity, n (%)			0.6497				0.041
Hispanic or Latino	3 (12.5 %)	3 (21.4 %)		4 (19.0 %)	1 (4.5 %)	0 (0 %)
Not Hispanic or Latino	21 (87.5 %)	11 (78.6 %)		17 (81.0 %)	21 (95.5 %)	22 (100.0 %)
Norwood–Hamilton classification, n (%)			0.9130				1.0000
II	0 (0 %)	0 (0 %)		0 (0 %)	0 (0 %)	1 (4.5 %)
III	10 (41.7 %)	5 (35.7 %)		10 (47.6 %)	10 (45.5 %)	10 (45.5 %)
IV	9 (37.5 %)	5 (35.7 %)		8 (38.1 %)	9 (40.9 %)	7 (31.8 %)
V	5 (20.8 %)	4 (28.6 %)		3 (14.3 %)	3 (13.6 %)	4 (18.2 %)
Fitzpatrick skin type (%)			0.7904				0.998
I	1 (4.2 %)	0 (0 %)		3 (14.3 %)	2 (9.1 %)	2 (9.1 %)
II	3 (12.5 %)	3 (21.4 %)		9 (42.9 %)	10 (45.5 %)	9 (40.9 %)
III	12 (50.0 %)	5 (35.7 %)		7 (33.3 %)	8 (36.4 %)	9 (40.9 %)
IV	8 (33.3 %)	6 (42.9 %)		2 (9.5 %)	2 (9.1 %)	2 (9.1 %)
Mean baseline hair counta (SD)	211.5 (54.0)	216.6 (34.8)		163.3 (69.4)	151.5 (42.4)	171.4 (62.3)

^aNumber of terminal hairs per cm² in the target area

SD standard deviation