Translational and Clinical Research Institute, Newcastle University, 3rd Floor, William Leech Building, Medical School, Framlington Place, Newcastle Upon Tyne, NE2 4HH, UK.
Freeman Hospital, Newcastle Upon Tyne Hospitals NHS Foundation Trust, Newcastle Upon Tyne, UK.
Dysphagia. 2022 Apr;37(2):323-332. doi: 10.1007/s00455-021-10281-9. Epub 2021 Mar 11.
The MD Anderson Dysphagia Inventory (MDADI) is a 20-item dysphagia-specific QOL questionnaire with four subscales: global, emotional, functional, and physical. It is widely used in clinical practice and in research; however, its psychometric properties have been under-researched. We aim to evaluate the organisation of the MDADI subscales and identify any redundant items. The MDADI is a routinely collected outcome measure at two centres in northeast England. Questionnaires completed at three months following treatment were extracted from these existing databases. Factor analysis was carried out with the aim of reducing redundancy among the set of questionnaire items. Cases with missing values were excluded. A total of 196 complete patient questionnaires were used in factor analysis. A one-factor model accounted for around 50% of the total variance in item responses. The top five endorsed items (abbreviated by the questionnaire item keywords: Excluded, Irritate, Esteem, Social, and Why) in this one factor appeared in three (emotional, functional, and physical) of the four supposed MDADI subscales, i.e. global, emotional, functional, and physical. Our results suggest an overlap of three MDADI subscales across the top five endorsed items. The content of the top five questions all appear related to the psychosocial aspects of swallowing. This implies some redundancy of the items in the original subscales of the questionnaire. Using the most endorsed items, it appears feasible to abbreviate the 20-item MDADI questionnaire to a 5-item "MiniDADI" questionnaire, which is likely to have greater utility in routine clinical practice outside of research settings.
MD 安德森吞咽障碍问卷 (MDADI) 是一个 20 项的吞咽障碍特异性生活质量问卷，包含四个分量表：整体、情绪、功能和生理。它在临床实践和研究中被广泛应用；然而，其心理测量学特性的研究还不够充分。我们旨在评估 MDADI 分量表的组织，并确定任何冗余项目。MDADI 是英格兰东北部的两个中心常规收集的结果测量指标。从这些现有数据库中提取了治疗后三个月完成的问卷。进行因子分析的目的是减少问卷项目集之间的冗余。排除缺失值的病例。共有 196 份完整的患者问卷用于因子分析。一个因素模型解释了项目反应总方差的约 50%。在这一个因素中，排名前五的项目（通过问卷项目关键词缩写：排除、刺激、自尊、社会和原因）出现在四个假定的 MDADI 分量表中的三个（整体、情绪和功能），即整体、情绪和功能。我们的结果表明，前五个认可项目在三个 MDADI 分量表之间存在重叠。前五个问题的内容都与吞咽的社会心理方面有关。这意味着问卷原始分量表中的项目存在一定程度的冗余。使用最认可的项目，将 20 项的 MDADI 问卷缩写为 5 项的“MiniDADI”问卷似乎是可行的，这可能会在研究环境之外的常规临床实践中具有更大的效用。
