“…Internal consistency of the DSHI in this sample was adequate (α = .70). Consistent with past research examining the factors associated with NSSI among various populations, including SUD patients, a dichotomous NSSI variable was created by assigning a score of “1” to participants who reported having engaged in NSSI, and a score of “0” to participants who did not report having engaged in any of the behaviors on the DSHI (for a comparable approach to examining NSSI, see Evren, Jural, & Cakmak, 2006; Heath, Toste, Nedecheva, & Charlebois, 2008; Klonsky et al, 2003; Muehlenkamp & Gutierrez, 2004; Polk & Liss, 2007). …”