Gender Difference in Substance Use and Psychiatric Outcomes Among Dually Diagnosed Veterans Treated in Specialized Intensive PTSD Programs

Objectives Posttraumatic stress disorder (PTSD) is a problem of growing importance among female veterans, which is especially challenging when accompanied by comorbid substance use disorder (SUD). Since women are still a small minority of Veterans Health Administration (VHA) patients, there is concern that outcomes among dually diagnosed women may be worse than among men. Method National program evaluation data were collected at admission and 4 months after discharge from 7,074 dually diagnosed veterans including 203 women (2.9%) treated at 57 specialized intensive VHA PTSD treatment programs between 1993 and 2011. Multiple regression was used to compare clinical change in women and men adjusting for baseline differences. Results Women showed no significant differences from men in measures of substance use or total PTSD symptoms at admission although they were more likely to have experienced sexual trauma and less likely to report combat exposure. With adjustment for these differences, there were no significant gender differences in length of stay, satisfaction with treatment, or measures of change in substance use or total PTSD symptoms 4 months after discharge. Reductions in an index of days of substance use was associated with reduction in total PTSD symptoms among both women (R = 0.33;p = .01) and men (R = 0.44,p < .0001) with no significant gender difference. Conclusion No significant gender differences were observed in substance use or PTSD outcomes, despite the extreme minority status of women in VHA programs. Highly vulnerable women can benefit as much as men, even when treatment is not formally tailored to address gender-specific needs.