Department of Psychology, The University of Texas at Austin, Austin, Texas 78712, USA.
J Am Coll Health. 2010;59(1):21-7. doi: 10.1080/07448481.2010.483706.
The authors examined drinking and driving after drinking before and after turning 21.
Participants were drawn from first time college students who were taking part in a 4-year longitudinal study of alcohol use and behavioral risks.
Web-based longitudinal surveys collected data on drinking and driving after drinking from August 2004 through November 2007 (n = 1,817). A subset of participants (n = 224) also monitored their daily behavior during the month they turned 21 (January through May, 2007).
Typical frequency and quantity of alcohol use increased from ages 18 to 21 years, whereas quantity decreased between 21 and 23 years of age. Driving after drinking showed a 72% relative increase (6% absolute increase) in the 2 weeks after turning 21.
Reaching the legal drinking age is associated with decreases in the amount of alcohol consumed per drinking occasion, but an increase in driving after drinking.
作者研究了 21 岁前后饮酒后驾车的情况。
参与者来自首次参加一项为期 4 年的酒精使用和行为风险纵向研究的大学生。
通过网络进行的纵向调查从 2004 年 8 月至 2007 年 11 月（n=1817）收集了饮酒后驾车的数据。一部分参与者（n=224）还在 21 岁生日所在的月份（2007 年 1 月至 5 月）监测他们的日常行为。
18 岁至 21 岁期间，典型的饮酒频率和数量增加，而 21 岁至 23 岁期间，饮酒量减少。21 岁生日后两周，酒后驾车的比例相对增加了 72%（绝对增加了 6%）。
达到法定饮酒年龄与每次饮酒的酒精摄入量减少有关，但与酒后驾车的增加有关。
