Department of Pediatrics, College of Medicine, Texas A&M University, College Station, TX, USA,
Qual Life Res. 2014 Feb;23(1):349-61. doi: 10.1007/s11136-013-0439-0. Epub 2013 Jun 6.
The objective of the present study is to describe the extension of the National Institutes of Health Patient-Reported Outcomes Measurement Information System (PROMIS(®)) pediatric parent proxy-report item banks for parents of children ages 5-7 years, and to investigate differential item functioning (DIF) between the data obtained from parents of 5-7-year-old children with the data obtained from parents of 8-17 year-old children in the original construction of the scales.
Item response theory (IRT) analyses of DIF were conducted comparing data from the 5-7 age group with data from the established scales for ages 8-17 across 5 generic health domains (physical functioning, pain, fatigue, emotional health, and social health) and asthma.
IRT DIF analyses revealed that the majority of the items functioned similarly with responses from parents of younger and older children. A small number of items were removed from the item bank for younger children, and a few items that exhibited statistical DIF were retained in the pools with the caveat that they should not be used in studies that involve comparisons of younger children with older children.
The study confirms that most of the items in the PROMIS parent proxy-report item banks can be used with parents of children ages 5-7. It is anticipated that these new scales will have application for younger pediatric populations when pediatric self-report is not feasible.
本研究旨在描述美国国立卫生研究院患者报告结局测量信息系统（PROMIS(®)）儿童家长代理报告条目库在 5-7 岁儿童家长中的扩展，并调查在量表原始构建中，来自 5-7 岁儿童家长的数据与来自 8-17 岁儿童家长的数据之间的差异项目功能（DIF）。
对 DIF 进行项目反应理论（IRT）分析，比较来自 5-7 岁年龄组的数据与来自 5 个通用健康领域（身体功能、疼痛、疲劳、情感健康和社会健康）和哮喘的 8-17 岁既定量表的数据。
IRT DIF 分析表明，大多数项目与年龄较小和较大的儿童的家长的反应相似。从儿童年龄较小的条目库中删除了少数条目，并保留了一些在统计上表现出 DIF 的条目，但有一个警告，即它们不应在涉及与年龄较小的儿童进行比较的研究中使用。
该研究证实，PROMIS 家长代理报告条目库中的大多数条目可用于 5-7 岁儿童的家长。预计当儿科自我报告不可行时，这些新量表将适用于较年轻的儿科人群。
