Objectives

To examine post-retail marijuana legalization (RML) change in marijuana use frequency and pro-marijuana norms among parents.

Methods

The Intergenerational Study, a longitudinal panel of parents (N = 668) and children, followed participants from 2002 to 2018, when parents were 27 and 43 years old, respectively. Three quarters of participants (74%) lived in an RML state and 142 (21%) had used marijuana in the 8 years prior to RML. Piecewise growth modelling compared pre- and post-RML slopes of use frequency and pro-marijuana norms.

Results

Frequency of use and pro-marijuana norms increased following legalization in both RML and non-RML states, though norms rose significantly faster in RML states. Growth in use was primarily driven by new users of marijuana. There were no differences in frequency of marijuana use or pro-marijuana norms by race/ethnicity, gender, or education.

Conclusions

An increase in marijuana use frequency associated with RML among parents poses risk to both parents' well-being and the health of their children. A faster pace of increase in pro-marijuana norms in RML states may signal continued increases in use in the future.

中文翻译：

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在零售大麻合法化的情况下，评估零售大麻合法化对美国各州大麻使用频率和规范的影响。

目标

研究零售大麻合法化 (RML) 后大麻使用频率的变化和父母中的亲大麻规范。

方法

代际研究是一个由父母（N = 668）和儿童组成的纵向小组，从 2002 年到 2018 年跟踪参与者，当时父母分别为 27 岁和 43 岁。四分之三 (74%) 的参与者 (74%) 生活在 RML 州，142 (21%) 人在 RML 之前的 8 年中使用过大麻。分段增长模型比较了 RML 前后使用频率和亲大麻规范的斜率。

结果

在 RML 和非 RML 州合法化后，使用频率和支持大麻的规范都增加了，尽管 RML 州的规范增长速度明显加快。使用量的增长主要是由大麻的新用户推动的。种族/民族、性别或教育在大麻使用频率或支持大麻规范方面没有差异。

结论

父母中与 RML 相关的大麻使用频率的增加对父母的福祉和孩子的健康构成风险。RML 州支持大麻规范的更快增长可能预示着未来大麻使用的持续增加。