. Author manuscript; available in PMC: 2018 Jul 1.

Published in final edited form as: J Eur Acad Dermatol Venereol. 2017 Feb 21;31(7):1223–1228. doi: 10.1111/jdv.14138

Table 3.

	Not TD² (N = 255)	TD² (N = 122)	P-value
	N (%)	N (%)
Illicit drug use:			0.10
Never use	98 (41.9)	35 (31.8)
Marijuana only	56 (23.4)	25 (22.7)
Poly drug use	80 (34.2)	50 (45.4)

Symptoms of SAD	14 (5.5)	21 (17.8)	0.0002

History of Depression	63 (24.7)	41 (33.6)	0.07

History of Exercise Addiction	3 (1.18)	7 (5.7)	0.013

History of Alcohol addiction:			0.0001
No	159 (62.3)	47 (38.5)
Abuse	65 (25.5)	43 (35.2)
Dependence	31 (12.2)	32 (26.2)

Nicotine addiction (current or past smokers only)	9 (9.0)	9 (17.3)	0.26