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. Author manuscript; available in PMC: 2010 Oct 30.
Published in final edited form as: Psychiatry Res. 2009 Sep 15;169(3):261–267. doi: 10.1016/j.psychres.2008.06.041

Table 3.

Characteristics of Study 2 Participant Groups

Variable Range NSSI (n=20) Control (n=20) Statistic
Age in years, M (SD) 18 – 30 22.6 (3.2) 23.5 (3.9) t38=0.80
Race/Ethnicity (%)
 European American 80.0 45.0 χ32=6.90
 Hispanic 0.0 15.0
 Asian 10.0 30.0
 Biracial 10.0 10.0
Lifetime suicide thoughts (%) 90 20 χ12=19.80*
Lifetime history of suicide plans (%) 80 0 χ12=26.67*
Lifetime history of suicide attempts (%) 50 0 χ12=13.33*
At least 1 current mental disorder (%) 80 30 χ12=10.10*

Note.

*

p<0.001

NSSI =Non-suicidal self-injury.