Identifying subtypes of dual alcohol and marijuana users: A methodological approach using cluster analysis
Identifying subtypes of dual alcohol and marijuana users: A methodological approach using cluster analysis
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DOI：
10.1016/j.addbeh.2011.07.016
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发表时间：
2012-01-01
影响因子：
4.4
通讯作者：
Woolard, Robert
中科院分区：
文献类型：
--
作者：
Harrington, Magdalena;Baird, Janette;Woolard, Robert
酒精是与大麻一起使用的最常见的精神活性物质。然而，人们对酒精和大麻的不同使用水平的潜在影响以及它们对危险行为、伤害和心理社会功能的影响知之甚少。文献中还没有确定酒精和大麻使用模式与风险增加相关的系统方法。我们报告了对在繁忙的城市急诊室进行的随机对照试验收集的数据进行的二次分析。在两个随机子样本中对过去30天饮酒和吸食大麻的模式进行了聚类分析，N(1)=210和N(2)=217。在同时使用酒精和大麻的人中，确定了四种不同的亚型：(1)每日吸食大麻和每周吸食酒精；(2)每周吸食酒精和每周吸食大麻；(3)每日饮酒和每日吸食大麻；以及(4)每日饮酒和每周吸食大麻。四个亚型在两个子样本中重复，并对外部效度进行检验，使用方差分析来确定心理社会和行为变量的聚类差异，证实了不同酒精和大麻使用模式的理论相关性。研究发现，与其他三类酒精和大麻使用者相比，日常饮酒和日常大麻使用者体验到更多负面后果的风险最高，从事与这两种物质相关的危险行为的范围也更广。(C)2011爱思唯尔有限公司。保留所有权利。
Alcohol is the most common psychoactive substance used with marijuana. However, little is known about the potential impact of different levels of use of both alcohol and marijuana and their influence on risky behaviors, injuries and psychosocial functioning. A systematic approach to identifying patterns of alcohol and marijuana use associated with increased risks has not yet been identified in the literature.We report on the secondary analysis of data collected from a RCT conducted in a busy urban emergency department. Cluster analysis was performed on the patterns of past 30-day alcohol and marijuana use in two random subsamples N(1) = 210 and N(2) = 217. Four distinct subtypes of those who use both alcohol and marijuana were identified: (1) Daily Marijuana and Weekly Alcohol users; (2) Weekly Alcohol and Weekly Marijuana users; (3) Daily Alcohol and Daily Marijuana users; and (4) Daily Alcohol, Weekly Marijuana users. The four subtypes were replicated in both subsamples and examination of the external validity using ANOVA to determine cluster differences on psychosocial and behavioral variables confirmed the theoretical relevance of different patterns of alcohol and marijuana use. There were significantly different psychosocial negative consequences and related risky behaviors among subtypes.We found that Daily Alcohol and Daily Marijuana users are at the highest risk to experience more negative consequences and engage in a broader spectrum of risky behaviors related to both substances, than the other three types of alcohol and marijuana users. (C) 2011 Elsevier Ltd. All rights reserved.