Table 1. Demographic Summaries.

	All Participants (n=20)	Adults Only (n = 16)
Randomization
Milk thistle first	8 (40.0%)	6 (37.5%)
Placebo first	12 (60.0%)	10 (62.5%)
Age (Years) - Mean (SD)	27.9 (11.5)	31.3 (10.3)
Age at Onset (Years) – Mean (SD), missing n=1	12.4 (4.6)	13.0 (5.0)
Average minutes of pulling per day – Mean (SD)	94.5 (113.6)	85.9 (91.2)
Sex – n (%)
Female	19 (95.0%)	15 (93.7%)
Education – n (%)
Currently in high school	4 (20.0%)	0 (0.0%)
Graduated high school/GED	2 (10.0%)	2 (12.5%)
Some college	4 (20.0%)	4 (25.0%)
College graduate	3 (15.0%)	3 (18.8%)
Post graduate (College +)	7 (35.0%)	7 (43.8%)
Marital Status – n (%)
Single	16 (80.0%)	12 (75.0%)
Married	4 (20.0%)	4 (25.0%)
Occupation – n (%)
Student	8 (40.0%)	5 (31.3%)
Student and employed	3 (15.0%)	2 (12.5%)
Work full-time	5 (25.0%)	5 (31.3%)
Work part-time	2 (10.0%)	2 (12.5%)
Unemployed	2 (10.0%)	2 (12.5%)
Current Psychotropic Medication – n (%)
Yes	7 (35.0%)	4 (25.0%)
Current ADHD – n (%)
Yes	5 (25.0%)	3 (18.8%)
Current Depression – n (%)
Yes	7 (35.0%)	4 (25.0%)
Current Anxiety – n (%)
Yes	6 (30.0%)	3 (18.8%)
Current Nail Biting – n (%)
Yes	5 (25.0%)	4 (25.0%)
Current Skin-Picking – n (%)
Yes	12 (60.0%)	8 (50.0%)