NIHR School for Public Health Research (SPHR), Newcastle upon Tyne, UK.
Population Health Sciences, Bristol Medical School, University of Bristol, Bristol, UK.
Addiction. 2018 May;113(5):817-827. doi: 10.1111/add.14132. Epub 2018 Jan 25.
To assess how far motivation to reduce alcohol consumption in increasing and higher-risk drinkers in England predicts self-reported attempts to reduce alcohol consumption and changes in alcohol intake during the following 6 months.
This study used self-reported data from 2928 higher-risk drinkers in the Alcohol Toolkit Study (ATS): a series of monthly cross-sectional household surveys of adults aged 16+ years of age in England. Alcohol consumption was measured in an initial survey and in a 6-month telephone follow-up interview using the Alcohol Use Disorders Identification Test (AUDIT)-C questionnaire. Motivation was measured in the initial survey using the Motivation to Reduce Alcohol Consumption (MRAC) scale. Attempts to reduce alcohol consumption during the past 6 months were recorded at follow-up. Data were analysed using repeated-measures difference-in-differences and logistic regression models.
Participants with higher initial motivation to reduce alcohol consumption were more likely to report that they had made an attempt to reduce consumption at follow-up [adjusted odds ratio (OR ) = 2.39, 95% confidence interval (CI) = 1.75-3.29]. There was an overall reduction in alcohol consumption between initial survey and follow-up (OR = 0.72, 95% CI = 0.65-0.79), but there was insufficient evidence of an additional effect of motivation to reduce consumption on subsequent changes in alcohol consumption, with the difference-in-differences effect instead suggesting an average increase (OR = 1.37, 95% CI = 1.00-1.88).
Increasing and higher-risk drinkers in England who report greater motivation to reduce their consumption are more likely to report making an attempt to reduce during the next 6 months, but this may not be associated with a reduction in alcohol consumption.
评估英格兰增加和高风险饮酒者减少饮酒的动机在多大程度上预测自我报告的减少饮酒尝试和接下来 6 个月内饮酒量的变化。
本研究使用了英格兰酒精工具包研究（ATS）中 2928 名高风险饮酒者的自我报告数据：这是一系列针对年龄在 16 岁及以上的成年人的每月横断面家庭调查。在初始调查和 6 个月的电话随访中，使用酒精使用障碍识别测试（AUDIT）-C 问卷测量饮酒量。在初始调查中使用动机减少饮酒（MRAC）量表测量动机。在随访中记录过去 6 个月内减少饮酒的尝试。使用重复测量差值差异和逻辑回归模型分析数据。
初始时动机更高的参与者更有可能在随访时报告他们已经尝试减少饮酒[调整后的优势比（OR）=2.39，95%置信区间（CI）=1.75-3.29]。在初始调查和随访之间，饮酒量总体上有所减少（OR=0.72，95%CI=0.65-0.79），但动机降低饮酒量对随后饮酒量变化的额外影响没有足够的证据，差异差异效应反而表明平均增加（OR=1.37，95%CI=1.00-1.88）。
英格兰增加和高风险饮酒者报告动机更高，更有可能报告在接下来的 6 个月内尝试减少饮酒，但这可能与饮酒量的减少无关。
