使用大麻与暴力：二者有关联吗？
Cannabis use and violence: Is there a link?
作者信息
Norström Thor, Rossow Ingeborg
机构信息
Swedish Institute for Social Research (SOFI), Stockholm University, Stockholm, Sweden Norwegian Institute for Alcohol and Drug Research (SIRUS), Oslo, Norway
Norwegian Institute for Alcohol and Drug Research (SIRUS), Oslo, Norway.
出版信息
Scand J Public Health. 2014 Jun;42(4):358-63. doi: 10.1177/1403494814525003. Epub 2014 Mar 7.
BACKGROUND
While several studies suggest that cannabis users are at increased risk of interpersonal violence, it is not clear to what extent the association is causal. Our paper aims to assess the association between cannabis use and violence by using a method that diminishes the risk of confounding.
METHODS
We analysed data on cannabis use and violent behaviour from the second (1994) and third (1999) waves of the Young in Norway Longitudinal Study (cumulative response rate: 68.1%, n = 2681). We applied fixed-effects modelling to estimate the association between these behaviours, implying that changes in the frequency of violence were regressed on changes in the frequency of cannabis use. The effects of time-invariant confounders were hence eliminated. In addition, we included two time-varying covariates.
RESULTS
The elasticity estimate implies that a 10% increase in cannabis use frequency is associated with a 0.4% increase in frequency of violence (p=.024).
CONCLUSIONS
Analyses of panel data on Norwegian youths reveals a statistically significant association between cannabis use and violence.
背景
虽然多项研究表明大麻使用者遭受人际暴力的风险增加，但尚不清楚这种关联在多大程度上是因果关系。我们的论文旨在通过一种降低混杂风险的方法来评估大麻使用与暴力之间的关联。
方法
我们分析了挪威青年纵向研究第二轮（1994年）和第三轮（1999年）中关于大麻使用和暴力行为的数据（累积应答率：68.1%，n = 2681）。我们应用固定效应模型来估计这些行为之间的关联，这意味着暴力频率的变化以大麻使用频率的变化为自变量进行回归分析。因此，消除了时间不变混杂因素的影响。此外，我们纳入了两个随时间变化的协变量。
结果
弹性估计表明，大麻使用频率增加10%与暴力频率增加0.4%相关（p = 0.024）。
结论
对挪威青年的面板数据分析显示，大麻使用与暴力之间存在统计学上的显著关联。
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