Persistent pain biases item response on the Geriatric Depression Scale (GDS): preliminary evidence for validity of the GDS-PAIN.
Persistent pain biases item response on the Geriatric Depression Scale (GDS): preliminary evidence for validity of the GDS-PAIN.
复制标题
持续性疼痛使老年抑郁量表 (GDS) 的项目反应出现偏差：GDS-PAIN 有效性的初步证据。
DOI：
10.1111/j.1526-4637.2007.00406.x
复制
发表时间：
2008
期刊：
影响因子：
--
通讯作者：
Weiner,DebraK
中科院分区：
文献类型：
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作者：
Karp,JordanF;Rudy,Thomas;Weiner,DebraK
目的：不同项目功能(DIF)评估一个指标上的项目在临床样本中与被测量属性相关的一致性。我们假设，在有持续性疼痛的老年人中，老年抑郁量表(GDS)的条目将基于疼痛的存在或强度来证明DIF。设计。单维度由因素和条目分析确定。使用Rasch建模对DIF进行了测试。然后，我们评估了修订后的GDS(GDS-Pain)的心理测量学特性，由没有证据表明患者和环境的项目组成。共有677名社区居住的老年人(年龄65-91岁)参与了对下腰或膝盖疼痛的观察或治疗研究，他们至少支持中度疼痛至少3个月。共有201个无痛对照纳入分析。结果：30个条目中有10个显示出显著的DIF。这些项目是：1)放弃活动和兴趣；2)被持续的想法困扰；3)经常烦躁不安；4)宁愿呆在家里；5)不觉得精力充沛；6)不喜欢早上起床；7)头脑不像以前那样清醒，8)感觉生活空虚；9)感觉更多的记忆问题；10)觉得生活不是很刺激。改良的GDS-Pain量表对量表的心理测量学特性没有负面影响。结论：GDS的表现受到疼痛的影响。当不稳定的条目被移除时，修订的GDS(GDS-Pain)似乎在心理测量学上是稳定的，并保持了内部一致性和与原始量表中疼痛测量的相似相关值。
Objective.Differential item functioning (DIF) assesses the consistency of items on a metric across clinical samples in relation to the attribute being measured. We hypothesized that in older adults with persistent pain, items of the Geriatric Depression Scale (GDS) would evidence DIF based on presence or intensity of pain.Design.Unidimensionality was determined by factor and item analyses. DIF was tested using Rasch Modeling. We then evaluated the psychometric properties of a revised GDS (GDS-PAIN), comprised of items that did not evidence DIF.Patient and Settings.A total of 677 community dwelling older adults (age 65–91) participating in observational or treatment studies of low back or knee pain who endorsed at least moderate pain for at least 3 months. A total of 201 pain-free controls were included in the analysis.Results.Ten of the 30 items displayed significant DIF. These items were: 1) dropping activities and interests; 2) bothered by persistent thoughts; 3) often get fidgety and restless; 4) prefer to stay home; 5) do not feel full of energy; 6) do not enjoy getting up in the morning; 7) mind is not as clear as it was, 8) feel life is empty; 9) feel more problems with memory; and 10) do not find life very exciting. The modified GDS-PAIN scale did not adversely affect the psychometric properties of the scale.Conclusions.The performance of the GDS is affected by pain. When unstable items are removed, the revised GDS (GDS-PAIN) appears to be psychometrically stable and maintains both internal consistency and similar correlation values with a measure of pain as the original scale.