Subbaraman Meenakshi Sabina, Kerr William C
Alcohol Research Group, Public Health Institute, Emeryville, CA, United States.
Alcohol Research Group, Public Health Institute, Emeryville, CA, United States.
Drug Alcohol Depend. 2017 Jun 1;175:205-209. doi: 10.1016/j.drugalcdep.2017.02.015. Epub 2017 Apr 19.
Support for the legalization of recreational marijuana continues to increase across the United States and globally. In 2016, recreational marijuana was legalized in the most populous US state of California, as well as three other states. The primary aim of this study was to examine trends in support for recreational marijuana legalization in Washington, a state which has had legal recreational marijuana for almost four years, using data collected over the four years post-legalization. A secondary aim was to examine trends in support for the cultivation of marijuana for personal use.
Data come from geographically representative general population samples of adult (aged 18 and over) Washington residents collected over five timepoints (every six months) between January 2014 and April 2016 (N=4101). Random Digit Dial was used for recruitment. Statistical analyses involved bivariate comparisons of proportions across timepoints and subgroups (defined by age, gender, and marijuana user status), and multivariable logistic regression controlling for timepoint (time) to formally test for trend while controlling for demographic and substance use covariates. All analyses adjusted for probability of selection.
Support for legalization in Washington has significantly increased: support was 64.0% (95% CI: 61.2%-67.8%) at timepoint 1 and 77.9% (95% CI: 73.2%-81.9%) at timepoint 5. With each six months' passing, support increased 19% on average. We found no statistically significant change in support for home-growing.
Support for marijuana legalization has continued to significantly increase in a state that has experienced the policy change for almost four years.
在美国乃至全球，支持娱乐用大麻合法化的呼声持续高涨。2016年，美国人口最多的加利福尼亚州以及其他三个州将娱乐用大麻合法化。本研究的主要目的是利用大麻合法化后四年间收集的数据，考察华盛顿州（该州合法的娱乐用大麻已存在近四年）民众对娱乐用大麻合法化支持率的变化趋势。次要目的是考察民众对个人种植大麻支持率的变化趋势。
数据来自2014年1月至2016年4月期间分五个时间点（每六个月一次）收集的具有地理代表性的华盛顿州成年居民（18岁及以上）样本（N = 4101）。采用随机数字拨号方式进行招募。统计分析包括各时间点和亚组（按年龄、性别和大麻使用状况定义）比例的双变量比较，以及控制时间点（时间）的多变量逻辑回归，以在控制人口统计学和物质使用协变量的同时正式检验趋势。所有分析均对选择概率进行了调整。
华盛顿州对大麻合法化的支持率显著上升：在时间点1时支持率为64.0%（95%可信区间：61.2% - 67.8%），在时间点5时为77.9%（95%可信区间：73.2% - 81.9%）。每过六个月，支持率平均提高19%。我们发现对家庭种植大麻的支持率没有统计学上的显著变化。
在一个已实施该政策近四年的州，对大麻合法化的支持率持续显著上升。
