MSN, RN, College of Nursing, The Catholic University of Korea, Seoul, Republic of Korea.
PhD, RN, Associate Professor, College of Nursing, The Catholic University of Korea, Seoul, Republic of Korea.
J Nurs Res. 2022 Jun 1;30(3):e206. doi: 10.1097/jnr.0000000000000484.
The Functional Assessment of Chronic Illness Therapy-Fatigue (FACIT-Fatigue) instrument is a fatigue measure widely used on patients with cancer worldwide. The psychometric quality of the Korean version of the FACIT-Fatigue instrument has never been systematically evaluated.
The purpose of this study was to assess the reliability and validity of the Korean version of the FACIT-Fatigue instrument.
This study used data collected from 170 patients with cancer and 120 healthy individuals. Internal consistency reliability was analyzed using Cronbach's α and item-total correlation. Construct validity was analyzed using confirmatory factor analysis, and known-group validity was tested using t tests. Convergent validity was analyzed using Pearson's correlation with pain and functional limitations. Predictive validity was analyzed using receiver operating characteristic curves.
The Cronbach's α was .93 for the reliability evaluation, and the item-total correlation ranged from .27 to .84. In the construct validity evaluation, the bifactor model showed good fit (Q = 1.93, comparative fit index = .97, Tucker-Lewis index = .96, root mean square error of approximation = .05), indicating using the instrument's total score to be more appropriate than using the subscale scores (explained common variance = .76, ω = .95, ωH = .85, ωH/ω = .89). The group of patients with cancer showed significantly higher fatigue than the healthy subject group, showing known-group validity (t = -10.40, p < .05). Fatigue showed significant and strong correlations with functional limitations and pain (all ps < .001). The area under the curve was .81 (cutoff point = 40, Youden's index: 0.47, sensitivity: 77.60%, specificity: 73.04%), verifying that the instrument is predictive of higher fatigue severity in patients with cancer.
CONCLUSIONS/IMPLICATIONS FOR PRACTICE: The Korean version of the FACIT-Fatigue instrument was shown to be reliable and valid. Its construct validity supports the use of the total scale score rather than the subscale scores.
功能评估慢性疾病治疗疲劳量表（FACIT-Fatigue）是一种在全球范围内广泛用于癌症患者的疲劳测量工具。该量表的韩文版的心理测量学质量从未得到系统评估。
本研究旨在评估韩文版 FACIT-Fatigue 量表的信度和效度。
本研究使用了来自 170 名癌症患者和 120 名健康个体的数据。采用 Cronbach's α 和项目总分相关性分析内部一致性信度。采用验证性因子分析评估结构效度，采用 t 检验测试已知组有效性。采用 Pearson 相关分析评估与疼痛和功能限制的聚合效度。采用接收者操作特征曲线分析预测效度。
信度评估的 Cronbach's α 为.93，项目总分相关性范围为.27 至.84。在结构效度评估中，双因素模型表现出良好的拟合度（Q = 1.93，比较拟合指数 =.97，Tucker-Lewis 指数 =.96，均方根误差近似值 =.05），表明使用该量表的总分比使用子量表得分更为合适（解释共同方差 =.76，ω =.95，ωH =.85，ωH/ω =.89）。癌症患者组的疲劳明显高于健康对照组，具有已知组有效性（t = -10.40，p <.05）。疲劳与功能限制和疼痛显著且强相关（均 p <.001）。曲线下面积为.81（截断点 = 40，Youden 指数：0.47，灵敏度：77.60%，特异性：73.04%），验证了该工具可预测癌症患者更高的疲劳严重程度。
结论/对实践的启示：韩文版 FACIT-Fatigue 量表表现出可靠和有效的特性。其结构效度支持使用总量表得分，而不是子量表得分。
