Accuracy of Self-Reported Drinking: Observational Verification of 'Last Occasion' Drink Estimates of Young Adults
Accuracy of Self-Reported Drinking: Observational Verification of 'Last Occasion' Drink Estimates of Young Adults
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DOI：
10.1093/alcalc/agr138
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发表时间：
2011-11-01
影响因子：
2.8
通讯作者：
Livingston, Michael
中科院分区：
文献类型：
--
作者：
Northcote, Jeremy;Livingston, Michael
目的：作为确定通常用于估计人口酒精使用情况的自我报告饮酒水平准确性的形成步骤，通过对参与者饮酒量的相应现场观察来测试“最后一次”自我报告方法的有效性。这项研究是首次尝试使用自然环境中的数据来验证自我报告的饮酒量的准确性。方法：有目的地选择西澳大利亚州珀斯市的 81 名年轻人（年龄 18-25 岁）。在同行研究人员观察 239 次后，参与者被要求报告 1-2 天内在夜生活场所饮用的酒精饮料的数量。提供了 129 个会话的完整观察数据和自我报告估计，这些数据配备了评估观察到的消耗量和报告的消耗量之间关系的多级模型。结果：参与者准确估计了轻度至中度饮酒（一次饮酒八杯或更少）时的饮酒量，报告的平均饮酒量与观察到的平均饮酒量之间没有显着差异。相比之下，参与者在大量饮酒超过八杯时会增加饮酒量，从而低估了自己的消费量。结论：最近自我报告调查中的回忆方法对于轻度至中度饮酒者的实际饮酒水平可能是相当准确的测量，但随着大量饮酒，酒精消耗量的低估也会增加。讨论了低估酗酒的一些可能原因，同时考虑了认知和社会文化因素。
Aims: As a formative step towards determining the accuracy of self-reported drinking levels commonly used for estimating population alcohol use, the validity of a 'last occasion' self-reporting approach is tested with corresponding field observations of participants' drinking quantity. This study is the first known attempt to validate the accuracy of self-reported alcohol consumption using data from a natural setting. Methods: A total of 81 young adults (aged 18-25 years) were purposively selected in Perth, Western Australia. Participants were asked to report the number of alcoholic drinks consumed at nightlife venues 1-2 days after being observed by peer-based researchers on 239 occasions. Complete observation data and self-report estimates were available for 129 sessions, which were fitted with multi-level models assessing the relationship between observed and reported consumption. Results: Participants accurately estimated their consumption when engaging in light to moderate drinking (eight or fewer drinks in a single session), with no significant difference between the mean reported consumption and the mean observed consumption. In contrast, participants underestimated their own consumption by increasing amounts when engaging in heavy drinking of more than eight drinks. Conclusion: It is suggested that recent recall methods in self-report surveys are potentially reasonably accurate measures of actual drinking levels for light to moderate drinkers, but that underestimating of alcohol consumption increases with heavy consumption. Some of the possible reasons for underestimation of heavy drinking are discussed, with both cognitive and socio-cultural factors considered.