Marijuana legislation and changes in youth marijuana use and related risk factors

大麻立法以及青少年大麻使用的变化和相关风险因素

• 批准号: 8821998
• 负责人: Katarina Guttmannova
• 金额: $ 18.62万
• 依托单位: UNIVERSITY OF WASHINGTON
• 依托单位国家: 美国
• 财政年份: 2014
• 资助国家: 美国
• 起止时间: 2014-09-15 至 2016-08-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/8821998
• 关键词: 21 year old; Adolescent; Adult; Affect; Age; Age of Onset; Alcohol or Other Drugs use; Alcohols; Attitude; Colorado; Data; Development; Drug Addiction; Drug abuse; Drug usage; Exploratory/Developmental Grant; Failure; Foundations; Future; Future Generations; Goals; Laws; Lead; Legal; Marijuana; Marijuana Smoking; Massachusetts; Medical Marijuana; Modeling; Montana; Oregon; Outcome; Parents; Pattern; Perception; Pharmaceutical Preparations; Policies; Prevalence; Preventive Intervention; Public Health; Risk; Risk Factors; Series; Services; Statutes and Laws; Students; Surveys; Teenagers; Time; Time Series Analysis; Tobacco; Washington; Youth; adolescent alcohol; adolescent drug use; adolescent substance use; design; drug development; peer; public health relevance

DESCRIPTION (provided by applicant): The goal of this project is to understand the impact of marijuana-related legislation on adolescent marijuana and other substance use and related risk factors using time-series analysis of survey data from Colorado, Washington, and Oregon and two additional comparison states. This R21 (exploratory/developmental) study will examine changes in the age of onset, and prevalence of any use, and regular use of marijuana among youth in these states, and lay a foundation for a future nationwide examination of the impact of state-level marijuana legislation on marijuana-related risk factors and outcomes among youth. The recent legalization of recreational marijuana use for those over 21 years of age in Washington and Colorado and the failure of legalization in Oregon, along with the medical marijuana laws of earlier decades, have changed the legal and normative context for current and future generations of youth. One of the primary concerns for public health is that legalization may lead to more favorable attitudes and norms and lower perceived harm from marijuana use, which have been shown to predict earlier age of marijuana use onset and greater adolescent use, which, in turn, have been associated with a range of negative outcomes, including subsequent drug abuse and dependence and interference with a healthy and successful transition into adulthood. As the national discussion around legalization of marijuana proceeds, there is an urgent need for scientific evidence from timely, carefully implemented studies informing whether such changes in marijuana laws affect youth development. The proposed study will use an interrupted time-series design (ITS), including multiple baseline ITS, to examine statewide survey data from adolescents and thereby assess the long-term patterns of age of onset and youth marijuana use and marijuana-related attitudes, norms, and perceived harm of using marijuana among youth before and after (1) medical marijuana legalization (MML; passed in 1998 in WA and OR, and 2000 in CO), and (2) recreational marijuana legalization (RML; passed in 2012 in WA and CO, and was rejected by the voters in the same year in Oregon), with additional comparisons to state-wide survey data from Montana and Massachusetts (which enacted MML in 2004 and 2012, respectively; and neither had RML on the ballot). Moreover, it is possible that these legislative changes affect other adolescent substance use. Thus, this study will examine the patterns of change in youth alcohol, tobacco, and other drug use in these three states over time to assess the plausibility of the so-called substitution effect in which marijuana use substitutes (or, in contrast, exacerbates) other substance use. The data for the analytic part of the proposed R21 study will come from the existing and planned statewide student surveys from Grades 6-12 in Colorado, Washington, Oregon, and additional comparison states of Montana and Massachusetts.

描述（由申请人提供）：该项目的目的是了解与大麻相关的立法对青少年大麻和其他物质使用以及相关风险因素的影响，并使用来自科罗拉多州，华盛顿和俄勒冈州以及两个其他比较状态的调查数据的时间序列分析。这项R21（探索性/发展性）研究将研究发病时代的变化，任何用途的流行率，以及在这些州的青年中定期使用大麻，并为未来的全国范围内研究国家一级大麻立法对大麻相关的危险因素和年轻人的影响的影响奠定了基础。最近在华盛顿和科罗拉多州21岁以上的人将休闲大麻使用合法化，俄勒冈州的合法化失败以及几十年来早期的医用大麻法律改变了当前和后代的年轻人的法律和规范环境。对公共卫生的主要关注之一是合法化可能导致更有利的态度和规范，并降低了使用大麻的感知伤害，这些危害已被证明可以预测大麻使用的较早年龄和更大的青春期使用，而这些使用又与一系列负面淘汰有关，包括随后的药物滥用和依赖性和依赖性和成功转移到健康的转变中，这是与一系列的负面影响有关的。随着关于大麻合法化的全国性讨论，迫切需要及时，精心实施的研究，告知大麻法律的这种变化是否会影响青年发展的科学证据。 The proposed study will use an interrupted time-series design (ITS), including multiple baseline ITS, to examine statewide survey data from adolescents and thereby assess the long-term patterns of age of onset and youth marijuana use and marijuana-related attitudes, norms, and perceived harm of using marijuana among youth before and after (1) medical marijuana legalization (MML; passed in 1998 in WA and OR, and 2000 in CO）和（2）休闲大麻合法化（RML； 2012年在WA和CO通过，并在俄勒冈州同年被选民拒绝），并与蒙大拿州和马萨诸塞州的全州调查数据进行了其他比较（分别在2004年和2012年颁布了MML，分别在Bartrot上分别在2004年和2012年颁布了RML）。此外，这些立法变化可能会影响其他青少年物质使用。因此，这项研究将检查这三个州的青年酒精，烟草和其他药物使用的变化模式，以评估大麻使用替代品的所谓替代效应的合理性（或相反，相反，加剧了） 其他物质使用。拟议的R21研究的分析部分的数据将来自科罗拉多州，华盛顿，俄勒冈州6 - 至12年级的现有和计划的全州学生调查，以及蒙大拿州和马萨诸塞州的其他比较状态。