Azimi Parisa, Montazeri Ali
Functional Neurosurgery Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
Mental Health Research Group, Health Metrics Research Centre, Iranian Institute for Health Sciences Research, ACECR, Tehran, Iran.
Asian Spine J. 2017 Apr;11(2):243-248. doi: 10.4184/asj.2017.11.2.243. Epub 2017 Apr 12.
Cross-sectional study.
To translate and validate the Fukushima lumbar spinal stenosis (LSS) scale 25 (FLS-25) for use in Iran.
Tools measuring patient-reported outcomes should satisfy certain psychometric properties.
FLS-25 is a self-administered scale for evaluating symptoms of LSS. A forward-backward procedure was applied to translate the questionnaire from English into Persian. A sample of patients with LSS completed the questionnaire at two points in time: once before surgery and once 6 months after the surgery. The Neurogenic Claudication Outcome Score (NCOS) was also used for assessment. The psychometric properties of FLS-25 were evaluated for internal consistency, test-retest and interobserver reliabilities, responsiveness to change, known-group comparison, and convergent validity.
In all, 131 patients were included in the study. The mean age of the patients was 61.4 (standard deviation, 11.1) years. The Cronbach's alpha coefficient for FLS-25 was 0.89. Test-retest reliability as carried out by the intraclass correlation coefficient was 0.94 (95% confidence interval, 0.95). Interobserver agreement as measured by the kappa statistics also was found to be acceptable (kappa value, 0.88), and validity was found to be satisfactory. The instrument was able to discriminate between the subgroups of patients who differed in symptom severity. The correlation between FLS-25 and NCOS scores was excellent, indicating good convergent validity (=0.82, <0.001). The results also indicated that the instrument was responsive to change (<0.001).
The Iranian version of FLS-25 performed well, and the findings suggest that it is a valid measure of symptom severity in LSS patients.
横断面研究。
翻译并验证福岛腰椎管狭窄症（LSS）量表25（FLS - 25），以便在伊朗使用。
测量患者报告结局的工具应满足某些心理测量学特性。
FLS - 25是一种用于评估LSS症状的自填式量表。采用前后翻译程序将问卷从英语翻译成波斯语。一组LSS患者在两个时间点完成问卷：一次在手术前，一次在手术后6个月。神经源性间歇性跛行结局评分（NCOS）也用于评估。对FLS - 25的心理测量学特性进行了内部一致性、重测和观察者间信度、对变化的反应性、已知组比较和收敛效度的评估。
该研究共纳入131例患者。患者的平均年龄为61.4（标准差，11.1）岁。FLS - 25的Cronbach's α系数为0.89。通过组内相关系数进行的重测信度为0.94（95%置信区间，0.95）。通过kappa统计量测量的观察者间一致性也被认为是可接受的（kappa值，0.88），效度也令人满意。该工具能够区分症状严重程度不同的患者亚组。FLS - 25与NCOS评分之间的相关性极好，表明收敛效度良好（=0.82，<0.001）。结果还表明该工具对变化有反应（<0.001）。
伊朗版的FLS - 25表现良好，研究结果表明它是LSS患者症状严重程度的有效测量工具。
