Hedlund Lena, Gyllensten Amanda Lundvik, Hansson Lars
Department of Health Science Centre, Faculty of Medicine at Lund University, P.O. Box 157, 221 00, Lund, Sweden,
Community Ment Health J. 2015 Apr;51(3):377-82. doi: 10.1007/s10597-014-9746-3. Epub 2014 Jun 28.
Fatigue is frequently reported by patients with mental illness. The multidimensional fatigue inventory (MFI-20) is a self-assessment instrument with 20 items including five dimensions of fatigue. The purpose of this study was to examine the test-retest reliability, internal consistency, convergent construct validity and feasibility of using MFI-20 in patients with schizophrenia spectrum disorders. Patients completed two self-assessment instruments, MFI-20 (n = 93) and Visual Analogue Scale (n = 79), twice within 1 week ± 2 days. Fifty-three patients also rated the feasibility of responding to the MFI-20 with a Likert scale. The test-retest reliability and validity were analysed by using Spearman's correlations and internal consistency by calculating Cronbach's α. The test-retest showed a correlation between .66 and .91 for all subscales of MFI. The internal consistency was .92. The analysis of convergent construct validity showed a correlation of .68 (time 1) and .77 (time 2). No item was systematically identified as being difficult to answer.
精神疾病患者经常报告疲劳症状。多维疲劳量表（MFI - 20）是一种自我评估工具，包含20个项目，涵盖疲劳的五个维度。本研究的目的是检验MFI - 20在精神分裂症谱系障碍患者中的重测信度、内部一致性、聚合效度和可行性。患者在1周±2天内两次完成两种自我评估工具，即MFI - 20（n = 93）和视觉模拟量表（n = 79）。53名患者还使用李克特量表对回答MFI - 20的可行性进行了评分。通过计算Spearman相关性分析重测信度和效度，通过计算Cronbach's α分析内部一致性。重测结果显示，MFI所有子量表的相关性在0.66至0.91之间。内部一致性为0.92。聚合效度分析显示，相关性在时间1时为0.68，在时间2时为0.77。没有项目被系统地认定为难以回答。
