Department of Mental Health Law & Policy, University of South Florida, 1330 Bruce B. Downs Boulevard, MHC 2716, Tampa, Florida 33612, USA.
J Stud Alcohol Drugs. 2011 Nov;72(6):981-90. doi: 10.15288/jsad.2011.72.981.
The present study examined the latent continuum of alcohol-related negative consequences among first-year college women using methods from item response theory and classical test theory.
Participants (N = 315) were college women in their freshman year who reported consuming any alcohol in the past 90 days and who completed assessments of alcohol consumption and alcohol-related negative consequences using the Rutgers Alcohol Problem Index.
Item response theory analyses showed poor model fit for five items identified in the Rutgers Alcohol Problem Index. Two-parameter item response theory logistic models were applied to the remaining 18 items to examine estimates of item difficulty (i.e., severity) and discrimination parameters. The item difficulty parameters ranged from 0.591 to 2.031, and the discrimination parameters ranged from 0.321 to 2.371. Classical test theory analyses indicated that the omission of the five misfit items did not significantly alter the psychometric properties of the construct.
Findings suggest that those consequences that had greater severity and discrimination parameters may be used as screening items to identify female problem drinkers at risk for an alcohol use disorder.
本研究采用项目反应理论和经典测试理论的方法，考察了一年级女大学生中与酒精相关的负面后果的潜在连续体。
参与者（N=315）为大一女学生，报告在过去 90 天内有任何饮酒行为，并使用罗格斯酒精问题指数完成了酒精消费和与酒精相关的负面后果评估。
项目反应理论分析显示，罗格斯酒精问题指数中确定的五个项目的模型拟合不佳。对其余 18 个项目应用二参数项目反应理论逻辑模型，以检验项目难度（即严重程度）和区分参数的估计值。项目难度参数范围为 0.591 至 2.031，区分参数范围为 0.321 至 2.371。经典测试理论分析表明，忽略这五个不拟合的项目并没有显著改变该结构的心理测量特性。
研究结果表明，那些严重程度和区分参数较高的后果可能被用作筛选项目，以识别有酒精使用障碍风险的女性问题饮酒者。
