OBJECTIVE Studies have documented greater risk for heavy marijuana use and consequences among adolescents and young adults who have acquired medical marijuana cards. With the cards, they are enrolled in their state's medical marijuana program and granted access to medical marijuana dispensaries. It is unknown, however, what factors influence young people to acquire medical marijuana cards, such as whether they seek out medical marijuana cards for the mental and physical health concerns that marijuana is targeted to address or whether they seek out medical marijuana cards solely because they are heavier users. METHOD There were 264 participants (54% female) in the current study, which used longitudinal data (Time 1 and Time 2, 1 year later) to compare young adult marijuana users who did not have a medical marijuana card at either time point (n = 215) with marijuana users who reported acquiring a medical marijuana card by Time 2 (n = 49; 19% of the sample). We used logistic regression to predict participants' acquisition of a medical marijuana card at Time 2 from Time 1 demographic factors, mental health symptoms of anxiety and depression, reports of poor physical health and symptoms, and frequency of use. RESULTS Analyses indicated that young adults who were male (odds ratio = 2.91) and who reported more frequent marijuana use (odds ratio = 1.07) were at greater odds of acquiring a medical marijuana card over the study period. None of the mental or physical health concerns predicted card acquisition. CONCLUSIONS Findings suggest that more frequent use, not necessarily mental and physical health concerns, is a main influence on medical marijuana card acquisition.

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与获得医疗大麻卡相关的因素：在加利福尼亚州的年轻成年人的纵向检查。

目的研究表明，大量吸食大麻的风险以及已获得医用大麻卡的青少年和年轻人的后果。有了这些卡，他们就可以参加本州的医用大麻计划，并可以使用医用大麻药房。但是，未知的因素是什么因素影响年轻人获得医用大麻卡，例如他们是否针对大麻要解决的心理和身体健康问题而寻求医用大麻卡，或者是否仅因为他们就寻求医用大麻卡是较重的用户。方法本研究共有264名参与者（54％为女性），他们使用纵向数据（时间1和时间2）一年后），比较在两个时间点（n = 215）没有医疗大麻卡的年轻成人大麻使用者与报告在时间2之前获得医疗大麻卡的大麻使用者（n = 49；样本的19％） ）。我们使用逻辑回归从时间1人口统计学因素，焦虑和抑郁的心理健康症状，不良身体健康和症状的报告以及使用频率来预测参与者在时间2获得的医用大麻卡。结果分析表明，在研究期内，男性（比值= 2.91）和报告的大麻使用频率更高（比值= 1.07）的年轻人更有可能获得医用大麻卡。心理或身体健康均与预期的购卡无关。结论研究结果表明使用频率更高，