Daily cannabis users with sickle cell disease had fewer hospital admissions despite reporting worse pain
Adults with sickle cell disease who used cannabis daily reported more severe pain episodes but had 1.8 fewer annual hospital admissions and 1.2 fewer ER visits than matched non-users.
Quick Facts
What This Study Found
Daily cannabis users with SCD had worse pain episode severity scores than others (56.7 vs. 48.8, p = 0.02) yet had 1.8 fewer annual admissions (p = 0.01) and 1.2 fewer annual ER visits (p = 0.01). Opioid dispensing was similar between groups after matching for age, gender, genotype, hydroxyurea use, and pain impact scores.
Key Numbers
Daily users: pain severity 56.7 vs. 48.8 (p = 0.02). 1.8 fewer annual admissions (p = 0.01). 1.2 fewer annual ER visits (p = 0.01). Similar opioid amounts dispensed after matching.
How They Did This
Cross-sectional study of adults with sickle cell disease comparing daily cannabis users with non-daily users. Validated patient-reported measures of pain and quality of life. Matched for age, gender, SCD genotype, hydroxyurea use, and pain impact scores.
Why This Research Matters
Sickle cell disease causes severe pain crises that drive frequent hospitalization. If cannabis use genuinely reduces healthcare utilization without increasing opioid needs, it could have significant clinical implications.
The Bigger Picture
The paradox of worse reported pain but fewer hospitalizations in cannabis users suggests cannabis may help manage pain at home rather than eliminating it, reducing the need for acute care.
What This Study Doesn't Tell Us
Cross-sectional design; cannot determine if cannabis caused the reduction in admissions; self-selection bias (patients who manage well at home may be more likely to choose cannabis); small sample implied by single-center design.
Questions This Raises
- ?Does cannabis allow SCD patients to manage pain crises at home that would otherwise require hospitalization?
- ?Would an RCT confirm these findings?
Trust & Context
- Key Stat:
- 1.8 fewer annual admissions and 1.2 fewer ER visits among daily cannabis users
- Evidence Grade:
- Cross-sectional with matching, but cannot determine causation; self-selection bias possible.
- Study Age:
- Published in 2020.
- Original Title:
- Daily Cannabis Users with Sickle Cell Disease Show Fewer Admissions than Others with Similar Pain Complaints.
- Published In:
- Cannabis and cannabinoid research, 5(3), 255-262 (2020)
- Authors:
- Curtis, Susanna A(2), Brandow, Amanda M, DeVeaux, Michelle, Zeltermam, Daniel, Devine, Lesley, Roberts, John D
- Database ID:
- RTHC-02487
Evidence Hierarchy
A snapshot of a population at one point in time.
What do these levels mean? →Frequently Asked Questions
Why did cannabis users report worse pain but go to the hospital less?
One interpretation is that daily cannabis users may have more severe disease (hence worse pain scores) but cannabis helps them manage crises at home rather than seeking emergency care. Alternatively, personality or coping style differences could contribute to both cannabis use and home management preferences.
Should people with sickle cell disease use cannabis for pain?
This cross-sectional study suggests a promising association, and the authors call for randomized controlled trials. The finding that opioid use was similar between groups (not reduced) suggests cannabis may complement rather than replace conventional pain management.
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Cite This Study
https://rethinkthc.com/research/RTHC-02487APA
Curtis, Susanna A; Brandow, Amanda M; DeVeaux, Michelle; Zeltermam, Daniel; Devine, Lesley; Roberts, John D. (2020). Daily Cannabis Users with Sickle Cell Disease Show Fewer Admissions than Others with Similar Pain Complaints.. Cannabis and cannabinoid research, 5(3), 255-262. https://doi.org/10.1089/can.2019.0036
MLA
Curtis, Susanna A, et al. "Daily Cannabis Users with Sickle Cell Disease Show Fewer Admissions than Others with Similar Pain Complaints.." Cannabis and cannabinoid research, 2020. https://doi.org/10.1089/can.2019.0036
RethinkTHC
RethinkTHC Research Database. "Daily Cannabis Users with Sickle Cell Disease Show Fewer Adm..." RTHC-02487. Retrieved from https://rethinkthc.com/research/curtis-2020-daily-cannabis-users-with
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.