Income level shapes how post-traumatic stress relates to substance use including cannabis
Household income modified the relationship between post-traumatic stress symptoms and substance use, with lower income associated with tobacco use and higher income associated with alcohol use after trauma.
Quick Facts
What This Study Found
Among nearly 3,000 trauma survivors, PTS symptoms were significantly associated with tobacco, alcohol, and cannabis use. Household income modified these relationships: lower income strengthened the PTS-tobacco link, while higher income strengthened the PTS-alcohol link.
Key Numbers
2,943 trauma survivors. Six assessment timepoints. Lower income: associated with tobacco use (P<0.001). Higher income: associated with alcohol use (P<0.001).
How They Did This
Longitudinal analysis from the AURORA study of 2,943 individuals who presented to emergency departments within 72 hours of a traumatic event. Substance use and PTS symptoms assessed at six timepoints.
Why This Research Matters
Understanding how socioeconomic factors shape post-trauma substance use can help tailor interventions. A one-size-fits-all approach may miss important socioeconomic drivers.
The Bigger Picture
This research sits at the intersection of trauma, addiction, and socioeconomic inequality. It suggests that economic resources shape not whether people use substances after trauma, but which substances they turn to.
What This Study Doesn't Tell Us
Cannabis findings were less robust than tobacco and alcohol findings. The study could not fully disentangle pre-existing substance use from post-trauma changes.
Questions This Raises
- ?Why does income differentially channel post-traumatic substance use toward different substances?
- ?Would economic support interventions after trauma reduce substance use escalation?
Trust & Context
- Key Stat:
- Household income had greater effect modification on post-trauma substance use than neighborhood deprivation level
- Evidence Grade:
- Strong longitudinal design with multiple timepoints and large sample, though cannabis-specific findings were less robust.
- Study Age:
- 2025 publication.
- Original Title:
- Multi-level socioeconomic modifiers of the comorbidity of post-traumatic stress and tobacco, alcohol, and cannabis use: the importance of income.
- Published In:
- Social psychiatry and psychiatric epidemiology, 60(5), 1135-1149 (2025)
- Authors:
- Garrison-Desany, Henri M(3), Meyers, Jacquelyn L(5), Linnstaedt, Sarah D(4), Koenen, Karestan C, House, Stacey L, Beaudoin, Francesca L, An, Xinming, Neylan, Thomas C, Clifford, Gari D, Jovanovic, Tanja, Germine, Laura T, Bollen, Kenneth A, Rauch, Scott L, Haran, John P, Storrow, Alan B, Lewandowski, Christopher, Musey, Paul I, Hendry, Phyllis L, Sheikh, Sophia, Jones, Christopher W, Punches, Brittany E, Pascual, Jose L, Seamon, Mark J, Harris, Erica, Pearson, Claire, Peak, David A, Domeier, Robert M, Rathlev, Niels K, O'Neil, Brian J, Sergot, Paulina, Bruce, Steven E, McLean, Samuel A, Denckla, Christy A
- Database ID:
- RTHC-06512
Evidence Hierarchy
Follows a group of people over time to track how outcomes develop.
What do these levels mean? →Frequently Asked Questions
How does income affect substance use after trauma?
Lower-income individuals with PTSD symptoms were more likely to increase tobacco use, while higher-income individuals were more likely to increase alcohol use.
What about cannabis specifically?
Cannabis use was significantly associated with post-traumatic stress symptoms cross-sectionally, but income moderation effects were more pronounced for tobacco and alcohol.
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Cite This Study
https://rethinkthc.com/research/RTHC-06512APA
Garrison-Desany, Henri M; Meyers, Jacquelyn L; Linnstaedt, Sarah D; Koenen, Karestan C; House, Stacey L; Beaudoin, Francesca L; An, Xinming; Neylan, Thomas C; Clifford, Gari D; Jovanovic, Tanja; Germine, Laura T; Bollen, Kenneth A; Rauch, Scott L; Haran, John P; Storrow, Alan B; Lewandowski, Christopher; Musey, Paul I; Hendry, Phyllis L; Sheikh, Sophia; Jones, Christopher W; Punches, Brittany E; Pascual, Jose L; Seamon, Mark J; Harris, Erica; Pearson, Claire; Peak, David A; Domeier, Robert M; Rathlev, Niels K; O'Neil, Brian J; Sergot, Paulina; Bruce, Steven E; McLean, Samuel A; Denckla, Christy A. (2025). Multi-level socioeconomic modifiers of the comorbidity of post-traumatic stress and tobacco, alcohol, and cannabis use: the importance of income.. Social psychiatry and psychiatric epidemiology, 60(5), 1135-1149. https://doi.org/10.1007/s00127-025-02821-7
MLA
Garrison-Desany, Henri M, et al. "Multi-level socioeconomic modifiers of the comorbidity of post-traumatic stress and tobacco, alcohol, and cannabis use: the importance of income.." Social psychiatry and psychiatric epidemiology, 2025. https://doi.org/10.1007/s00127-025-02821-7
RethinkTHC
RethinkTHC Research Database. "Multi-level socioeconomic modifiers of the comorbidity of po..." RTHC-06512. Retrieved from https://rethinkthc.com/research/garrison-desany-2025-multilevel-socioeconomic-modifiers-of
Access the Original Study
Study data sourced from PubMed, a service of the U.S. National Library of Medicine, National Institutes of Health.
This study breakdown was produced by the RethinkTHC research team. We analyze and report published research findings without making health recommendations. All interpretations are based solely on the published abstract and study data.