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(由申请者提供)：该项目的目标是通过对科罗拉多州、华盛顿州和俄勒冈州以及另外两个比较州的调查数据进行时间序列分析，了解与大麻相关的立法对青少年大麻和其他物质使用的影响以及相关的风险因素。这项R21(探索性/发展性)研究将审查这些州青年中大麻的发病年龄、任何使用的流行率和经常使用大麻的变化，并为今后在全国范围内审查州一级大麻立法对青年中与大麻相关的风险因素和结果的影响奠定基础。最近华盛顿州和科罗拉多州对21岁以上的人使用娱乐性大麻合法化，俄勒冈州未能合法化，以及前几十年的医用大麻法律，改变了当代和未来几代青年的法律和规范背景。对公共卫生的主要担忧之一是，大麻合法化可能会导致更有利的态度和规范，以及更低的大麻使用危害感知，事实证明，这预示着大麻开始使用的年龄更早，青少年更多地使用大麻，而这反过来又与一系列负面后果有关，包括随后的药物滥用和依赖，以及干扰健康和成功地过渡到成年。随着围绕大麻合法化的全国性讨论的进行，迫切需要来自及时、仔细实施的研究的科学证据，以告知大麻法律的这种变化是否会影响青年发展。这项拟议的研究将使用中断的时间序列设计(ITS)，包括多个基线ITS，以检查全州范围内的青少年调查数据，从而评估在(1)医用大麻合法化(MML；1998年在华盛顿州和俄勒冈州通过，2000年在CO通过)和(2)娱乐性大麻合法化(RML；2012年在华盛顿州和科罗拉多州通过，同年在俄勒冈州被选民否决)，并与蒙大拿州和马萨诸塞州的全州调查数据进行了额外的比较(这两个州分别在2004年和2012年颁布了MML；RML都没有出现在选票上)。此外，这些立法变化可能会影响其他青少年药物的使用。因此，这项研究将检查这三个州青少年酒精、烟草和其他药物使用随时间的变化模式，以评估所谓的替代效应的合理性，在这种效应中，大麻使用替代品(或相反，加剧)。 其他物质使用。拟议中的R21研究的分析部分的数据将来自科罗拉多州、华盛顿州、俄勒冈州以及蒙大拿州和马萨诸塞州等其他比较州的6-12年级现有和计划中的全州学生调查。