Gómez Juana, Hidalgo M Dolores, Tomás-Sábado Joaquín
Department of Behavioral Sciences Methodology, University of Barcelona, Spain.
Nurs Res. 2007 Mar-Apr;56(2):89-96. doi: 10.1097/01.NNR.0000263966.24125.92.
: The study of human attitudes toward death has given rise to a substantial body of empirical research. Psychometric instruments have been developed to measure fear of death, or death anxiety, and its psychological consequences in people who continually come into contact with stimuli related to mortality.
: To analyze the 20-item Death Anxiety Inventory (DAI) within the framework of item response theory (IRT) and using the generalized partial credit model.
: The sample comprised 154 men and 550 women and was drawn from nurses, doctors, industrial workers, teachers, undergraduates, and retired persons. Subjects completed the DAI, a self-administered, Likert-type questionnaire of 20 items, each with six response options.
: The DAI showed a relatively adequate fit to the generalized partial credit model. Thus, 4 of the 20 items presented a poor fit to the model. The analysis of item information and test information functions revealed that the 20-item test was appropriate for differentiating subjects with medium or high levels of death anxiety. The test information function was higher in this range of scores, indicating greater precision in the estimate of death anxiety for these subjects.
: The generalized partial credit model can be used to obtain detailed information about a clinical test and its items, and there are advantages to this approach when working with polytomous tests.
对人类死亡态度的研究引发了大量实证研究。已经开发出心理测量工具来测量对死亡的恐惧或死亡焦虑，以及其在持续接触与死亡相关刺激的人群中的心理后果。
在项目反应理论（IRT）框架内并使用广义部分计分模型分析20项死亡焦虑量表（DAI）。
样本包括154名男性和550名女性，来自护士、医生、产业工人、教师、本科生和退休人员。受试者完成了DAI，这是一份20项的自填式李克特量表问卷，每个项目有六个回答选项。
DAI对广义部分计分模型的拟合度相对较好。因此，20个项目中有4个与该模型的拟合度较差。项目信息和测验信息函数分析表明，20项测验适用于区分中度或高度死亡焦虑的受试者。在这个分数范围内测验信息函数更高，表明对这些受试者死亡焦虑的估计更精确。
广义部分计分模型可用于获取有关临床测验及其项目的详细信息，在处理多分类测验时这种方法有优势。
