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Investigating the relation between cannabis use and non-traffic injuries, 2001-2013 Benny, Claire
Abstract
Background. In the fall of 2018, the Canadian federal government passed the Cannabis Act, legalizing the recreational use of cannabis. However, relatively little is known about the impact recreational cannabis use may have on non-traffic injuries, which make up the majority of injury-related incidents and costs. As such, it is critically important to evaluate the risks associated with cannabis use and communicate these findings to the public, policymakers, and the scientific community. Using a population-based cohort study design, the current study aimed to assess the relation between self-reported cannabis use at baseline and non-traffic injuries over a 10-year follow-up period. Methods. A linkage product between the Canadian Community Health Survey – Mental Health and Well-being (CCHS 1.2) and the Discharge Abstract Database (DAD) was used to conduct the current study. I used Cox Proportional Hazards modelling to determine if cannabis use increased the hazards of non-traffic injury hospitalizations due to falls and self-harm between 2001 and 2013. Cannabis use was defined in two ways: (1) in terms of frequency of use, at baseline; and, (2) in terms of past-year use, at baseline. Results. The sample size for this study included 18,345 respondents from the CCHS 1.2-DAD linked data product. Over the study period, 480 non-traffic injury hospitalizations occurred in the DAD. I found that past-year cannabis use at baseline was associated with an increased hazard of non-traffic injury hospitalization (HR: 1.42, 95% CI: 1.06-1.9, p = 0.02) and self-harm hospitalization (HR: 1.97, 95% CI: 1.16-3.35, p = 0.01). Similarly, at least monthly cannabis use at baseline was associated with an increased hazard of non-traffic injury hospitalization (HR: 1.63, 95% CI: 1.13-2.36, p = 0.01) and self-harm hospitalization (HR: 2.12, 95% CI: 1.09-2.47, p = 0.01) However, there was no statistically significant effect on fall hospitalizations among cannabis users. Conclusion. The Cox proportional hazards models found that cannabis use at baseline was associated with significant population-level increases in hazards for non-traffic injury and self-harm injury hospitalization. The findings contribute to the existing literature by demonstrating the association between cannabis use at baseline and population-level in-patient hospitalization admissions for non-traffic injuries over time.
Item Metadata
Title |
Investigating the relation between cannabis use and non-traffic injuries, 2001-2013
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Creator | |
Publisher |
University of British Columbia
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Date Issued |
2019
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Description |
Background. In the fall of 2018, the Canadian federal government passed the Cannabis Act, legalizing the recreational use of cannabis. However, relatively little is known about the impact recreational cannabis use may have on non-traffic injuries, which make up the majority of injury-related incidents and costs. As such, it is critically important to evaluate the risks associated with cannabis use and communicate these findings to the public, policymakers, and the scientific community. Using a population-based cohort study design, the current study aimed to assess the relation between self-reported cannabis use at baseline and non-traffic injuries over a 10-year follow-up period.
Methods. A linkage product between the Canadian Community Health Survey – Mental Health and Well-being (CCHS 1.2) and the Discharge Abstract Database (DAD) was used to conduct the current study. I used Cox Proportional Hazards modelling to determine if cannabis use increased the hazards of non-traffic injury hospitalizations due to falls and self-harm between 2001 and 2013. Cannabis use was defined in two ways: (1) in terms of frequency of use, at baseline; and, (2) in terms of past-year use, at baseline.
Results. The sample size for this study included 18,345 respondents from the CCHS 1.2-DAD linked data product. Over the study period, 480 non-traffic injury hospitalizations occurred in the DAD. I found that past-year cannabis use at baseline was associated with an increased hazard of non-traffic injury hospitalization (HR: 1.42, 95% CI: 1.06-1.9, p = 0.02) and self-harm hospitalization (HR: 1.97, 95% CI: 1.16-3.35, p = 0.01). Similarly, at least monthly cannabis use at baseline was associated with an increased hazard of non-traffic injury hospitalization (HR: 1.63, 95% CI: 1.13-2.36, p = 0.01) and self-harm hospitalization (HR: 2.12, 95% CI: 1.09-2.47, p = 0.01) However, there was no statistically significant effect on fall hospitalizations among cannabis users.
Conclusion. The Cox proportional hazards models found that cannabis use at baseline was associated with significant population-level increases in hazards for non-traffic injury and self-harm injury hospitalization. The findings contribute to the existing literature by demonstrating the association between cannabis use at baseline and population-level in-patient hospitalization admissions for non-traffic injuries over time.
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Genre | |
Type | |
Language |
eng
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Date Available |
2019-12-24
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Provider |
Vancouver : University of British Columbia Library
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Rights |
Attribution-NonCommercial-NoDerivatives 4.0 International
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DOI |
10.14288/1.0387336
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URI | |
Degree | |
Program | |
Affiliation | |
Degree Grantor |
University of British Columbia
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Graduation Date |
2020-05
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Campus | |
Scholarly Level |
Graduate
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Rights URI | |
Aggregated Source Repository |
DSpace
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Rights
Attribution-NonCommercial-NoDerivatives 4.0 International