Author	Affiliation
Alex Gimelli, MD	UC Davis Medical Center, Department of Emergency Medicine, Sacramento, California
Anusha Deshpande, DO	Scripps Mercy Hospital, Department of Internal Medicine, San Diego, California
Julia N. Magana, MD	UC Davis Medical Center, Department of Emergency Medicine, Sacramento, California
Aimee Moulin, MD	UC Davis Medical Center, Department of Emergency Medicine, Sacramento, California

Introduction
Methods
Results
Discussion
Limitations
Conclusion

INTRODUCTION

Legalization of cannabis use is increasingly widespread across the United States, but the ramifications are unknown. In 2016 California approved Proposition 64 legalizing recreational cannabis. Unintentional pediatric ingestion is one possible ramification, as occurred in Colorado after legalization in 2009. Regional poison center cases involving marijuana increased by an average 34% per year from 2009 to 2015 in Colorado. During that time, 34% of cases involved self-reported cases of poor product storage.¹ Colorado instituted safe storage guidelines to mitigate adverse effects in children from acute cannabis intoxication.² Children who unintentionally ingest cannabis can present with lethargy, ataxia, tachycardia, mydriasis, and hypotonia, which can lead to preventable emergency department (ED) visits, invasive workups, and hospital admissions.^3,4

Despite the institution of safe storage guidelines in Colorado, a recent study found continuing suboptimal storage practices in that state.⁵ This trend was mirrored in the use of medical marijuana, as oncology patients and their caregivers reported suboptimal storage practices and had received little storage education from healthcare providers.⁶ The 2016 California legislation did not include regulations on the safe storage and disposal of cannabis products, creating a potential for similarly unsafe storage practices. The purpose of this study, which was based on a community presenting to a pediatric ED, was to assess the prevalence of cannabis and how it is stored in the home and, secondly, to assess attitudes regarding use of cannabis and storage education among Californians who live in households with children.

METHODS

We conducted a cross-sectional survey with a goal enrollment of 400 adult visitors in an academic pediatric ED in California from June 8–August 16, 2018. During this time, a convenience sample between the hours of 8 am –10 pm was conducted daily in which all adult visitors were screened for eligibility and subsequently approached. The survey was generated and finalized by the investigators and research assistants (RA) based on similar studies found during literature review. The survey contained 42 yes-no or Likert-scale questions regarding cannabis use and storage, and education on cannabis storage. Eligible participants were ≥18 years old and lived in a household with children <18 years old. Participants were excluded if they did not speak English or Spanish, or if the patient was critically ill. Only one survey was administered per household. All participants were notified that their responses were not shared with law enforcement or their care team, and they completed the survey in the absence of a RA.

English-speaking participants filled out the survey electronically and submitted their responses directly into Research Electronic Data Capture (REDCap Consortium, Vanderbilt University, Nashville, TN). Spanish-speaking participants filled out a Spanish-language survey on paper, which was subsequently placed in a lockbox after which these de-identified surveys were uploaded to REDCap weekly. We used descriptive statistics to analyze data. Subjects who were screened but excluded were not tracked during this study. The UC Davis Institutional Review Board approved this study.

RESULTS

Research assistants approached 558 visitors who met inclusion criteria, and 401 (71.9%) consented to participate (Table 1). Seventeen percent of participants (67/401) reported cannabis use in the last six months, and 14.5% (58/401) reported cannabis use in their home. The 82.3% (330/401) of respondents who denied use of cannabis within the last six months are referred to as non-users for the purposes of data analysis. Four respondents did not disclose their cannabis use within the last six months. Inhaled marijuana (46/57, 81%) and edibles (22/57, 39%) were reportedly the most common forms of cannabis used in the home (Table 2).

On a scale of 1=Extremely unsafe to 10=Extremely safe, cannabis users had a mean safety score regarding use of cannabis around children at 6.72/10, whereas non-users felt cannabis use to be less safe around children with a mean score of 3.28/10. Over half of home users (32/58, 55.2%) reported keeping their cannabis in a locked container, and only 44.8% of home users (26/58) reported keeping their cannabis both locked and hidden.

Among home users, the most common source of storage advice was friends and family (21/58, 36.2%), and 52% of these individuals (11/21) cited this as their lone source. Only 16% of home users (9/58) received safe storage information from a dispensary, and 45% of home users (26/58) received no storage information whatsoever or claimed they did not know of sources of storage information because the cannabis did not belong to them. Only 7% of home users received education on use and storage from their primary care provider (PCP) (4/58). Most of both cannabis users (53/67, 79.1%) and non-users (241/330, 73%) were comfortable receiving education about cannabis from their PCP. Most cannabis users (42/67, 62.7%) and non-users (221/330, 67%) felt that PCPs should screen and educate their patients on cannabis use/safe storage. Similarly, both cannabis users (38/67, 56.7%) and non-users (188/330, 57%) felt that dispensaries should educate the public on cannabis use/safe storage.

DISCUSSION

A 2017 national survey indicated that as many as 11.5% of California adults reported regular cannabis use. Of adults surveyed, 14.5% reported cannabis use in a home with children. Since the legalization of cannabis in California, there has been a steady rise in prevalence of use,⁷ likely due to increased availability. In our sample, users perceived cannabis to be significantly safer for both adult use and possession inside a home with children, as compared with non-users. Further study is warranted to investigate how the public perceives the risk of cannabis as more time passes since legalization.

Currently, little research exists on cannabis storage in homes with children, and there is no research that describes sources of storage information. Both users and non-users strongly felt that safe storage was important despite poor compliance with safe storage practices. Our results suggest a lack of educational sources regarding safe storage despite 23 years of medical cannabis use in California.² The Public Health Department of Colorado set guidelines including locking, hiding, and using child-resistant packaging, yet California does not currently define safe storage. Providing guidelines at a local or state level may provide a reference for cannabis users as well as healthcare providers. Based on participant responses, cannabis dispensaries may also serve as another point for the distribution of safe storage information.

With the increasing prevalence of cannabis use in California,^7,8 downstream effects on the pediatric population should be further investigated. Healthcare providers in primary care, pediatrics, and the ED should be prepared to screen and educate families on cannabis use and the importance of safe storage in homes with children.

LIMITATIONS

Limitations of this study include the use of a single site for data collection. We used a convenience sample within the hours of 8 am – 10 pm, which may have incurred selection bias. The survey tool used was not rigorously validated by respondents or external experts. The study relied on self-reporting, and stigma regarding cannabis use may have skewed self-reporting and enrollment. Furthermore, the use of paper surveys for Spanish speakers due to the lack of an electronic survey may have altered results for the Spanish-speaking respondents. No ethnic and socioeconomic data was collected, and this may limit the application of this sample to the public.

CONCLUSION

Safe cannabis storage is not clearly defined in California, and there is a lack of safe storage education. In our sample we found that many children are exposed to cannabis use in their homes, and most cannabis users do not keep their cannabis both locked and hidden. Most cannabis users and non-users alike felt comfortable discussing cannabis storage safety with their providers. Healthcare providers in primary care and the ED may play an important role in educating the public about cannabis use and safe cannabis storage.

Footnotes

Section Editor: Muhammed Waseem, MD

Full text available through open access at http://escholarship.org/uc/uciem_westjem

Address for Correspondence: Alex Gimelli, MD, UC Davis Medical Center, Department of Emergency Medicine, 4150 V St, Sacramento, CA 95817. Email: agimelli@ucdavis.edu 9 / 2021; 22:1146 – 1149

Submission history: Revision received July 13, 2020; Submitted May 3, 2021; Accepted May 8, 2021

Conflicts of Interest: By the WestJEM article submission agreement, all authors are required to disclose all affiliations, funding sources and financial or management relationships that could be perceived as potential sources of bias. No author has professional or financial relationships with any companies that are relevant to this study. There are no conflicts of interest or sources of funding to declare.

REFERENCES

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