Faculty of Health Sciences, Oslo Metropolitan University, Oslo, Norway.
School of Life Sciences, Pontifícia Universidade Católica Do Paraná (PUCPR), Curitiba, Brazil.
Physiother Theory Pract. 2022 Sep;38(9):1273-1280. doi: 10.1080/09593985.2020.1825581. Epub 2020 Sep 24.
The aim of this study was to examine the test-retest reliability, internal consistency, and floor and ceiling effects of a Norwegian version of the Neurological Fatigue Index for Stroke (NFI-Stroke).
To evaluate the psychometric properties of the NFI-Stroke, persons with stroke were recruited. Inclusion criteria were: ≥18 years; a performance of ≥4 seconds on the Clock-Drawing Test; and participants had to speak and understand Norwegian. Test-retest reliability, internal consistency, and floor and ceiling effects were evaluated with Spearman's rho, Weighted Kappa, Cronbach's Alpha, corrected total-item correlation, percentage of the total score, and responses to each item.
Of 82 eligible, 66 respondents were included in the project. NFI-Stroke has a test-retest reliability of 0.89, 0.89, and 0.87 with Spearman's rho and 0.55-0.78 with Weighted Kappa. For the subgroup chronic stroke, Spearman's rho was 0.89, 0.86, and 0.93, and Weighted Kappa was 0.61-0.91. For the subgroup sub-acute stroke, Spearman's rho was 0.48, 0.55, and 0.51, and Weighted Kappa was 0.02-0.54. Cronbach's Alpha was 0.90. For the physical subscale, alpha was 0.89, and for the cognitive subscale 0.74. Corrected total-item correlation for NFI-Stroke was 0.50-0.78, 0.55-0.79 for the physical subscale, and 0.46-0.60 for the cognitive subscale. None scored the highest nor lowest possible score of the questionnaire.
NFI-Stroke has high test-retest reliability, and high internal consistency with neither floor nor ceiling effects for persons with stroke. The questionnaire may be useful both in general rehabilitation in institutions as well as in the municipal health services.
本研究旨在检验挪威版卒中神经疲劳指数（NFI-Stroke）的重测信度、内部一致性、以及下限和上限效应。
为了评估 NFI-Stroke 的心理测量学特性，我们招募了卒中患者。纳入标准为：≥18 岁；画钟测验的表现≥4 秒；参与者必须会讲并理解挪威语。我们使用 Spearman's rho、Weighted Kappa、Cronbach's Alpha、校正总项目相关、总分的百分比以及对每个项目的反应来评估重测信度、内部一致性、下限和上限效应。
在 82 名符合条件的患者中，有 66 名患者入组。NFI-Stroke 的重测信度为 0.89、0.89 和 0.87，Spearman's rho 为 0.55-0.78，Weighted Kappa 为 0.61-0.91。对于慢性卒中亚组，Spearman's rho 为 0.89、0.86 和 0.93，Weighted Kappa 为 0.61-0.91。对于亚急性卒中亚组，Spearman's rho 为 0.48、0.55 和 0.51，Weighted Kappa 为 0.02-0.54。Cronbach's Alpha 为 0.90。对于身体子量表，alpha 为 0.89，对于认知子量表为 0.74。NFI-Stroke 的校正总项目相关为 0.50-0.78，身体子量表为 0.55-0.79，认知子量表为 0.46-0.60。没有人在问卷中获得最高或最低的可能分数。
NFI-Stroke 具有较高的重测信度和内部一致性，对于卒中患者既没有下限效应也没有上限效应。该问卷在机构的一般康复和市健康服务中可能都有用。
