目标:我们的目标是探讨将PROMIS项目银行参与社会角色和活动的能力(APSRA)扩展为新项目是否会导致更有效的定位(即,选择适合每个个体特征级别的项目),以及在所有潜在性状水平上更可靠的测量。
方法:1,022名荷兰成年人的样本完成了原始项目库的所有35个项目以及17个新项目(荷兰语)。本出版物中介绍的新项目已暂时从荷兰语翻译成英文,以供介绍。我们评估了基本的IRT假设一维性,地方独立,和单调性。此外,我们检查了项目参数,并评估性别的差异项目功能(DIF),教育,区域,年龄,和种族。此外,我们比较了测试信息函数,项目参数,和θ分数,用于原始和扩展的项目库,以评估测量范围是否有所改善。
结果:我们发现扩展的题库与基本的IRT假设兼容,并显示出良好的可靠性。此外,扩展的题库改进了较低性状范围内的测量,这对于可靠地评估临床人群的功能很重要(即,报告参与水平较低的人)。
结论:我们扩展了PROMIS-APSRA题库并提高了其心理测量质量。我们的研究有助于PROMIS测量创新,这允许向现有项目库添加新项目,不改变分数的解释,同时保持分数与其他PROMIS工具的可比性。
OBJECTIVE: Our objective was to explore whether the extension of the PROMIS item bank Ability to Participate in Social Roles and Activities (APSRA) with new items would result in more effective targeting (i.e., selecting items that are appropriate for each individual\'s trait level), and more reliable measurements across all latent trait levels.
METHODS: A sample of 1,022 Dutch adults completed all 35 items of the original item bank plus 17 new items (in Dutch). The new items presented in this publication have been translated provisionally from Dutch into English for presentation purposes. We evaluated the basic
IRT assumptions unidimensionality, local independence, and monotonicity. Furthermore, we examined the item parameters, and assessed differential item functioning (DIF) for sex, education, region, age, and ethnicity. In addition, we compared the test information functions, item parameters, and θ scores, for the original and extended item bank in order to assess whether the measurement range had improved.
RESULTS: We found that the extended item bank was compatible with the basic
IRT assumptions and showed good reliability. Moreover, the extended item bank improved the measurement in the lower trait range, which is important for reliably assessing functioning in clinical populations (i.e., persons reporting lower levels of participation).
CONCLUSIONS: We extended the PROMIS-APSRA item bank and improved its psychometric quality. Our study contributes to PROMIS measurement innovation, which allows for the addition of new items to existing item banks, without changing the interpretation of the scores and while maintaining the comparability of the scores with other PROMIS instruments.