Research Department, Lovisenberg Diaconal Hospital, Oslo, Norway.
Department of Interdisciplinary Health Sciences, Faculty of Medicine, Institute of Health and Society, University of Oslo, Oslo, Norway.
BMC Public Health. 2023 Oct 31;23(1):2132. doi: 10.1186/s12889-023-17036-1.
Due to the nature of fatigue, a brief reliable measure of fatigue severity is needed. Thus, the aim of our study was to evaluate a short version of the Lee Fatigue Scale (LFS) in the Norwegian general population.
This cross-sectional survey consists of a representative sample from the Norwegian population drawn by The National Population Register in Norway. The study is part of a larger study (NORPOP) aimed at collecting normative data from several questionnaires focused on health in adults living in Norway. Registered citizens between 18 and 94 years of age were randomly selected stratified by age, sex and geographic region. Of the 4971 respondents eligible for the study, 1792 (36%) responded to the survey. In addition to age and sex, we collected responses on a 5-item version of the LFS measuring current fatige severity. The psychometric properties focusing on internal structure and precision of the LFS items were analyzed by a Rasch rating scale model.
Complete LFS scores for analyses were available for 1767 adults. Women had higher LFS-scores than men, and adults < 55 years old had higher scores than older respondents. Our analysis of the LFS showed that the average category on each item advanced monotonically. Two of the five items demonstrated misfit, while the three other items demonstrated goodness-of-fit to the model and uni-dimensionality. Items #1 and #4 (tired and fatigue respectively) showed differential item functioning (DIF) by sex, but no items showed DIFs in relation to age. The separation index of the LFS 3-item scale showed that the sample could be separated into three different groups according to the respondents' fatigue levels. The LFS-3 raw scores correlated strongly with the Rasch measure from the three items. The core dimensions in these individual items were very similarly expressed in the Norwegian language version and this may be a threat to the cultural-related or language validity of a short version of the LFS using these particular items.
The study provides validation of a short LFS 3-item version for estimating fatigue in the general population.
由于疲劳的性质,我们需要一种简短且可靠的疲劳严重程度衡量方法。因此,我们的研究目的是评估 Lee 疲劳量表(LFS)的简短版本在挪威普通人群中的适用性。
本横断面研究的样本来自挪威全国人口登记处抽取的挪威代表性人群。该研究是一项更大研究(NORPOP)的一部分,旨在从几个针对挪威成年人健康的问卷中收集常模数据。符合条件的 18-94 岁的注册公民按年龄、性别和地理位置分层随机选择。在 4971 名符合研究条件的应答者中,有 1792 名(36%)应答了该调查。除了年龄和性别外,我们还收集了 5 项 LFS 简短版本的当前疲劳严重程度的应答。通过 Rasch 评分量表模型分析 LFS 项目的内部结构和精密度的心理测量特性。
共有 1767 名成年人可提供完整的 LFS 评分进行分析。女性的 LFS 评分高于男性,年龄<55 岁的成年人的评分高于年龄较大的应答者。我们对 LFS 的分析表明,每个项目的平均类别呈单调递增。五项中的两项项目表现出拟合不佳,而其他三项则表现出对模型和单维性的良好拟合。项目#1 和 #4(疲倦和疲劳)表现出性别上的差异功能(DIF),但没有项目表现出与年龄相关的 DIF。LFS 三项目量表的分离指数表明,根据应答者的疲劳程度,样本可分为三个不同的组。LFS-3 原始得分与三个项目的 Rasch 测量值高度相关。这些单项的核心维度在挪威语版本中表达非常相似,这可能对使用这些特定项目的 LFS 简短版本的文化相关或语言有效性构成威胁。
本研究为使用 LFS 简短三项目版本评估普通人群的疲劳提供了验证。