Hughes John R, Fingar James R, Budney Alan J, Naud Shelly, Helzer John E, Callas Peter W
Department of Psychiatry, University of Vermont, Burlington, VT 05405, United States; Department of Psychology, University of Vermont, Burlington, VT 05405, United States; Department of Family Practice, University of Vermont, Burlington, VT 05405, United States.
Department of Psychiatry, University of Vermont, Burlington, VT 05405, United States.
Addict Behav. 2014 Oct;39(10):1464-70. doi: 10.1016/j.addbeh.2014.05.024. Epub 2014 Jun 4.
Most of the harm from marijuana use is experienced by daily users. Despite this, there has not been a detailed prospective description of daily marijuana use.
We recruited daily marijuana users (n=142) by internet ads, Craigslist, flyers, etc. Participants were mostly women (58%) with a mean age of 33 and 47% were minorities. Participants called an Interactive Voice Response phone system to report marijuana and other drug use daily for 3months.
Participants averaged using marijuana 3.2 times per day. Almost all participants used multiple modes of delivery during the study. Bongs/vaporizers/pipes were the most common mode of use (45% of uses). Day-to-day variability in amount of use was relatively small. The median rating of intoxication was 3.8 on a 0-6 scale with no intoxication reported on 1% of days and severe intoxication on 24% of days. The large majority binge drank (71%) or used tobacco (73%). Fifteen during-study variables were associated with the frequency of marijuana use; running out of marijuana and social setting were the strongest correlates. Retrospective reports of "usual" use at study entry were often significantly different than daily reports of use during the study.
This is the first detailed prospective description of daily marijuana use. Most users used multiple times/day, used multiple modes to administer marijuana, were often intoxicated, and under-reported high rates of using alcohol and tobacco. The frequency of marijuana use was especially influenced by social factors. These results will help future studies better describe daily marijuana use.
大麻使用造成的危害大多由每日使用者承受。尽管如此，目前尚无关于每日使用大麻的详细前瞻性描述。
我们通过网络广告、克雷格列表、传单等方式招募每日使用大麻的人群（n = 142）。参与者大多为女性（58%），平均年龄33岁，47%为少数族裔。参与者拨打交互式语音应答电话系统，连续3个月每日报告大麻及其他毒品的使用情况。
参与者平均每天使用大麻3.2次。几乎所有参与者在研究期间使用多种吸食方式。水烟枪/蒸发器/烟斗是最常见的使用方式（占使用方式的45%）。每日使用量的变化相对较小。在0至6的量表上，中毒程度的中位数为3.8，1%的日子报告无中毒情况，24%的日子报告有严重中毒情况。绝大多数人有暴饮行为（71%）或使用烟草（73%）。15个研究期间的变量与大麻使用频率相关；大麻用完和社交场合是最强的相关因素。研究开始时关于“通常”使用情况的回顾性报告往往与研究期间每日使用情况的报告有显著差异。
这是对每日使用大麻的首次详细前瞻性描述。大多数使用者每天使用多次，采用多种方式吸食大麻，经常处于中毒状态，并且少报了很高的酒精和烟草使用率。大麻使用频率尤其受社会因素影响。这些结果将有助于未来的研究更好地描述每日使用大麻的情况。
