Using calculations to estimate blood alcohol concentrations for naturally occurring drinking episodes: A validity study
Using calculations to estimate blood alcohol concentrations for naturally occurring drinking episodes: A validity study
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DOI：
10.15288/jsa.2005.66.130
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发表时间：
2005-01-01
期刊：
影响因子：
--
通讯作者：
Carey, KB
中科院分区：
文献类型：
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作者：
Hustad, JTP;Carey, KB
目的：本研究的目的是确定回顾性估计血液酒精浓度（eBACs）的准确性，以重现由自然发生的饮酒事件引起的中毒。这项研究确定了5个eBAC方程，将它们应用于自我报告数据，并将结果与呼吸测试获得的实际血液酒精浓度进行比较。方法：在饮酒场所附近招募109名饮酒者，并要求他们提供呼气酒精浓度（BrAC）样本。在第二天醒着的时候，研究人员通过电话联系参与者，收集确定eBAC的五种算法所需的数据。比较从每个方程得到的BrAC和eBAC，以确定两种方法之间的一致程度。结果：eBACs之间具有高度相关性（r >= 0.99）；以BrAC为标准，所有算法的R-2取值范围为0.54 ~ 0.55。平均而言，eBAC方程高估了BrAC。回归分析发现，饮酒时间、标准饮酒量、体重和上学年限是导致差异的因素。结论：这些数据表明，尽管所有方程都产生高度相关的ebac，但它们与BrAC的关系确实因方程而异。利用最佳拟合方程，eBAC与BrAC在中毒浓度低于0.08 g/210 L时相关性更强，且随着中毒浓度的升高，相关性减弱。
Objective: The purpose of this study is to determine the accuracy of retrospective estimated blood alcohol concentrations (eBACs) for re-creating intoxication resulting from a naturally occurring drinking event. This study identified five eBAC equations, applied them to self-report data and compared the results to actual blood alcohol concentration obtained by a breath test. Method: A convenience sample of 109 drinkers was recruited near drinking establishments and asked to provide breath alcohol concentration (BrAC) samples. Participants were contacted by telephone on the next waking day to gather data required for five algorithms that determine eBAC. BrAC and eBAC obtained from each equation were compared to determine the level of agreement between the two approaches. Results: eBACs correlated highly with each other (r >= 0.99); R-2 for all algorithms ranged from 0.54 to 0.55 with BrAC as the criterion. On average, eBAC equations overestimated BrAC. Regression analysis identified the amount of time spent drinking, number of standard drinks, weight and year in school as factors related to discrepancy. Conclusions: These data indicate that, although all equations produce eBACs that are highly related, their relationship to BrAC does vary across equations. Using the best fitting equation, eBAC is more strongly correlated with BrAC when intoxication is less than 0.08 g/210 L of breath, and the magnitude of the relationship decreases as intoxication rises.