ArticleClinical toxicology (Philadelphia, Pa.)2022
Impact of marijuana legalization on cannabis-related visits to the emergency department.
Article in Clinical toxicology (Philadelphia, Pa.), 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.
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Who cites it
10 citing papers in PubMed, 16 citations in OpenAlex.
- Adult-use cannabis legalization in the united states: a scoping review of outcome monitoring recommendations.BMC public health · 2025Article
- Cannabinoid Hyperemesis Syndrome, 2016 to 2022.JAMA network open · 2025Article
- Sociodemographic and clinical characteristics associated with overdose among patients with a substance-related diagnosis in the emergency department of Southern California.Harm reduction journal · 2025Article
- Trends in Cannabis-Related Hospitalizations in Arizona From 2016 to 2021 and Associations With Mental Health-Related Hospitalizations.Journal of studies on alcohol and drugs · 2025Article
- Trends in cannabis use in New Jersey: Effects of COVID-19 and cannabis legalization.Journal of the American College of Emergency Physicians open · 2024Article
- An Urgent Call for Studies That Address the Cardiovascular Consequences of Legalization of Marijuana.Cardiology research · 2024Review
- Trends of emergency department visits for cannabinoid hyperemesis syndrome in Nevada: An interrupted time series analysis.PloS one · 2024Article
- Cannabis positivity rates in 17 emergency departments across the United States with varying degrees of marijuana legalization.Clinical toxicology (Philadelphia, Pa.) · 2023Article
- Trends in emergency department visits associated with cannabis use among older adults in California, 2005-2019.Journal of the American Geriatrics Society · 2023Article
- Impacts of recreational cannabis legalization on use and harms: A narrative review of sex/gender differences.Frontiers in psychiatry · 2023Review
Corrections and comments
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Authors and funding
9 authors at 3 institutions in 2 countries.
Funding
Abstract
backgroundCannabis is widely used in the United States despite federal laws. In US states that have progressed toward legalization, there have been various reported impacts on cannabis-related emergency department (ED) visits. However, studies on the impact of legalization in Massachusetts (MA) EDs are lacking.
methodsCannabinoid immunoassay (THC IA) results and cannabis-related ICD-10 codes were obtained for consecutive patient ED visits at two academic medical centers in Boston, MA over the following legalization periods (January 2012-December 2019): decriminalized (DEC), before medical dispensaries (MED BD), medical dispensaries available (MED DISP), before recreational dispensaries (REC BD) and recreational dispensaries available (REC DISP). Trends and monthly positivity rates for THC IA and ICD-10 codes were determined for these legalization periods.
resultsThere was an increase in both THC IA (
conclusionsLegalization of marijuana in MA has led to an increase in cannabis use as indicated by both increasing rates of positive THC IA results, in older adults, as well as increasing cannabis-related ICD-10 codes. Data suggest a steady increase in THC use associated with legalization that was not associated with an increase in opiate, fentanyl, or cocaine use. We recommend using ED THC IA positivity, an objective laboratory measure, to monitor THC use and the impact of state-specific progression in cannabis legalization.
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