Alling, CateDoane, MorganSimmons, SymoneYoakum, Rylie2025-06-032025-06-03https://hdl.handle.net/2097/45103Kirmser Undergraduate Research Award - Group category, grand prizeThis research study aims to understand the correlation between PTSD and substance abuse among homeless war veterans. By utilizing a mixed method design, this study focuses on how individuals that experience PTSD will also likely experience a substance abuse disorder at some stage in their lives. This study hypothesizes that homeless war veterans who have PTSD are more at risk of having a substance abuse disorder. We will recruit 200 participants for a 15-minute survey which will include the PCL- 5 questionnaire, examining the severity of PTSD and the Drug Abuse Screening Test (DAST-10) in addition to several socio-demographic questions. Around 20-30 participants will be invited to take part in in-depth interviews to provide further insights into their personal experiences and perceptions regarding PTSD and substance abuse. The findings from this study will provide a deeper understanding of the high rates of co-occurring PTSD and substance use disorders among homeless war veterans.Post-traumatic Stress Disorder (PTSD)HomelessnessWar veteransSubstance Abuse DisorderQuestionnaires and InterviewsTextAlling, C., Doane, M., Simmons, S., & Yoakum, R. (2025). PTSD and substance abuse among homeless war veterans. Unpublished manuscript, Kansas State University, Manhattan, KS.