Comment; “States with medical cannabis laws had a 24.8% lower mean annual opioid overdose mortality rate”. I initially was guilty of withholding Medication-Assisted Treatment to patients using cannabis until I attended a conference a few years ago. It changed my habits completely. “Marijuana Maintenance” does NOT produce good long-term sobriety–but it may still save lives!
Marcus A. Bachhuber, MD1,2,3; Brendan Saloner, PhD3,4; Chinazo O. Cunningham, MD, MS5; et alColleen L. Barry, PhD, MPP3,6Author AffiliationsArticle InformationJAMA Intern Med. 2014;174(10):1668-1673. doi:10.1001/jamainternmed.2014.4005editorial comment icon EditorialCommentrelated articles icon RelatedArticles
Abstract
Importance Opioid analgesic overdose mortality continues to rise in the United States, driven by increases in prescribing for chronic pain. Because chronic pain is a major indication for medical cannabis, laws that establish access to medical cannabis may change overdose mortality related to opioid analgesics in states that have enacted them.
Objective To determine the association between the presence of state medical cannabis laws and opioid analgesic overdose mortality.
Design, Setting, and Participants A time-series analysis was conducted of medical cannabis laws and state-level death certificate data in the United States from 1999 to 2010; all 50 states were included.
Exposures Presence of a law establishing a medical cannabis program in the state.
Main Outcomes and Measures Age-adjusted opioid analgesic overdose death rate per 100 000 population in each state. Regression models were developed including state and year fixed effects, the presence of 3 different policies regarding opioid analgesics, and the state-specific unemployment rate.
Results Three states (California, Oregon, and Washington) had medical cannabis laws effective prior to 1999. Ten states (Alaska, Colorado, Hawaii, Maine, Michigan, Montana, Nevada, New Mexico, Rhode Island, and Vermont) enacted medical cannabis laws between 1999 and 2010. States with medical cannabis laws had a 24.8% lower mean annual opioid overdose mortality rate (95% CI, −37.5% to −9.5%; P = .003) compared with states without medical cannabis laws. Examination of the association between medical cannabis laws and opioid analgesic overdose mortality in each year after implementation of the law showed that such laws were associated with a lower rate of overdose mortality that generally strengthened over time: year 1 (−19.9%; 95% CI, −30.6% to −7.7%; P = .002), year 2 (−25.2%; 95% CI, −40.6% to −5.9%; P = .01), year 3 (−23.6%; 95% CI, −41.1% to −1.0%; P = .04), year 4 (−20.2%; 95% CI, −33.6% to −4.0%; P = .02), year 5 (−33.7%; 95% CI, −50.9% to −10.4%; P = .008), and year 6 (−33.3%; 95% CI, −44.7% to −19.6%; P < .001). In secondary analyses, the findings remained similar.
Conclusions and Relevance Medical cannabis laws are associated with significantly lower state-level opioid overdose mortality rates. Further investigation is required to determine how medical cannabis laws may interact with policies aimed at preventing opioid analgesic overdose.
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