“…Most studies have found no differences in length of time in treatment between genders (Kelly et al, 2011;Peles et al, 2008), and others found that females were more likely than males to be retained in treatment N 1 year (Deck & Carlson, 2005;Hser, Anglin, & Liu, 1990). Interpretations for why females may remain in treatment longer than males include extra motivation to abstain from drug use to retain custody of children, and the finding that females tend to utilize support services such as group and individual therapy sessions more frequently than males (Barry et al, 2011;Schiff, Levit, & Moreno, 2007). Chronically heroin-dependent females (vs. males) have also been found to have poorer overall health status, more dysfunctional families of origin, and greater mental health problems (Chatham, Hiller, Rowan-Szal, Joe, & Simpson, 1999;Grella & Lovinger, 2012), perhaps motivating them to remain in care and use more treatment services.…”