Assessing the effects of medical marijuana laws on marijuana use: the devil is in the details.

Assessing the effects of medical marijuana laws on marijuana use: the devil is in the details.
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DOI:
10.1002/pam.21804
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发表时间:
2015
影响因子:
3.8
通讯作者:
Sevigny, Eric L.
Sevigny, Eric L.
中科院分区:
管理学3区
文献类型:
--
作者:
Pacula, Rosalie L.;Powell, David;Heaton, Paul;Sevigny, Eric L.

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本文揭示了以前的不一致,在文献中确定的医用大麻的法律(MML)和娱乐性大麻的使用之间的关系,通过仔细研究的重要性,政策层面(注册要求,家庭种植,药房)和特定的政策层面制定的时间。使用我们自己的法律的分析国家MML的数据,我们评估哪些功能与成人和青少年的娱乐和大量使用这些政策变量的治疗Epidemic数据系统(TEDS)和全国青年纵向调查(NLSY 97)的数据相关联。我们采用差异中的差异技术,控制状态和年度固定效应,使我们能够利用国家内的政策变化。我们发现,虽然MML法律的简单二分法指标与大麻使用或滥用没有正相关,但这些措施隐藏了法律的药房对成人和青少年使用,特别是重度使用的积极影响。敏感性分析,有助于解决问题的政策内涵和实际执行的药房支持我们的主要结论,并不是所有的MML法律是相同的。这些政策的各个方面,特别是对药房的法律的保护,可能导致成年人和21岁以下法律的年龄的人相对于没有这种供应来源的医用大麻法律更多地使用和滥用大麻。
This paper sheds light on previous inconsistencies identified in the literature regarding the relationship between medical marijuana laws (MMLs) and recreational marijuana use by closely examining the importance of policy dimensions (registration requirements, home cultivation, dispensaries) and the timing of when particular policy dimensions are enacted. Using data from our own legal analysis of state MMLs, we evaluate which features are associated with adult and youth recreational and heavy use by linking these policy variables to data from the Treatment Episodes Data System (TEDS) and the National Longitudinal Survey of Youth (NLSY97). We employ differences-in-differences techniques, controlling for state and year fixed effects, allowing us to exploit within-state policy changes. We find that while simple dichotomous indicators of MML laws are not positively associated with marijuana use or abuse, such measures hide the positive influence legal dispensaries have on adult and youth use, particularly heavy use. Sensitivity analyses that help address issues of policy endogeneity and actual implementation of dispensaries support our main conclusion that not all MML laws are the same. Dimensions of these policies, in particular legal protection of dispensaries, can lead to greater recreational marijuana use and abuse among adults and those under the legal age of 21 relative to medical marijuana laws without this supply source.
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DOI: 10.1002/pam.21726
发表时间: 2014
影响因子: 3.8
作者:
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