Alterman Arthur I, Cacciola John S, Habing Brian, Lynch Kevin G
Department of Psychiatry, University of Pennsylvania School of Medicine, PA, USA.
Psychol Assess. 2007 Mar;19(1):119-32. doi: 10.1037/1040-3590.19.1.119.
Baseline Addiction Severity Index (5th ed.; ASI-5) data of 2,142 substance abuse patients were analyzed with two nonparametric item response theory (NIRT) methods: Mokken scaling and conditional covariance techniques. Nine reliable and dimensionally homogeneous Recent Problem indexes emerged in the ASI-5's seven areas, including two each in the Employment/Support and Family/Social Relationships areas. Lifetime Problem indexes were derived for five of the areas--Medical, Drug, Alcohol, Legal, and Psychiatric--but not for the Employment/Support and Family/Social Relationships areas. Correlational analyses conducted on a subsample of 586 patients revealed the indexes for the seven areas to be largely independent. At least moderate correlations were obtained between the Recent and Lifetime indexes within each area where both existed. Concurrent validity analyses conducted on this same subsample found meaningful relationships, except for the Employment/Support area. NIRT-based methods were able to add to findings produced previously by classical psychometric methods and appear to offer promise for the psychometric analysis of complex, mixed-format instruments such as the ASI-5.
对2142名药物滥用患者的基线成瘾严重程度指数（第5版；ASI-5）数据采用两种非参数项目反应理论（NIRT）方法进行分析：莫肯量表法和条件协方差技术。ASI-5的七个领域中出现了九个可靠且维度同质的近期问题指数，其中就业/支持领域和家庭/社会关系领域各有两个。为五个领域——医疗、药物、酒精、法律和精神科——得出了终生问题指数，但就业/支持领域和家庭/社会关系领域未得出。对586名患者的子样本进行的相关分析表明，七个领域的指数在很大程度上相互独立。在两个指数均存在的每个领域中，近期指数和终生指数之间至少获得了中等程度的相关性。对同一子样本进行的同时效度分析发现了有意义的关系，但就业/支持领域除外。基于NIRT的方法能够补充先前经典心理测量方法得出的结果，并且似乎为诸如ASI-5这样复杂的混合格式工具的心理测量分析提供了前景。
