Abstract

This study aimed to assess the accuracy and factors influencing blood alcohol concentration self-estimation during voluntary breath testing. It also aimed to assess whether intended drinking behaviour changed after reviewing blood alcohol concentration and factors influencing this. A total of 462 Australian music festival patrons aged 18–40 years completed a survey exploring factors likely to affect estimation accuracy and provided an estimation of their blood alcohol concentration. A breathalyser reading was taken and participants were asked whether reviewing this reading changed their drinking intentions. Most respondents (58.4%) were accurate within 0.02% range, while 11.4% underestimated and 29.1% overestimated. Machine-read blood alcohol concentration was the most significant estimation accuracy predictor. Reviewing their readings changed the intention to drink in one-third of participants, indicating that voluntary breath testing may influence future drinking behaviour. Underestimation was associated with intention to drink less, whilst completing the survey earlier and <1 h since last drink was associated with intention to drink more.

摘要

本研究旨在评估自愿呼气测试期间血液酒精浓度自我估计的准确性和影响因素。它还旨在评估在审查血液酒精浓度和影响这一点的因素后，预期的饮酒行为是否发生了变化。共有 462 名 18 至 40 岁的澳大利亚音乐节赞助人完成了一项调查，探索可能影响估计准确性的因素，并提供了他们血液中酒精浓度的估计值。进行了酒精分析仪读数，并询问参与者查看该读数是否会改变他们的饮酒意图。大多数受访者 (58.4%) 的准确率在 0.02% 范围内，而 11.4% 低估和 29.1% 高估。机器读取的血液酒精浓度是最重要的估计准确度预测因子。回顾他们的读数改变了三分之一参与者的饮酒意图，这表明自愿呼气测试可能会影响未来的饮酒行为。低估与减少饮酒的意图有关，而较早完成调查且距离上次饮酒不到 1 小时与增加饮酒的意图有关。