Department of Orthopaedic Surgery, Fukushima Medical University School of Medicine, Fukushima, Japan.
Spine (Phila Pa 1976). 2012 Feb 1;37(3):232-9. doi: 10.1097/BRS.0b013e318216afb4.
A cross-sectional study.
We developed a reliable and valid instrument to measure symptom severity in patients with lumbar spinal stenosis (LSS).
Studies on LSS have investigated the efficacy of drug therapy compared with conservative therapy and surgery, examined predictive factors for therapeutic effects, and ascertained postoperative quality of life. However, patient background factors have varied among studies, making it difficult to compare findings across studies.
First, focus group interviews were conducted, and data were analyzed using qualitative methods. Then, 189 patients with a diagnosis of LSS from 9 hospitals completed the LSS questionnaire. Exploratory factor analysis was conducted to examine the construct validity, and Cronbach α coefficient was calculated to test internal consistency. The criterion-related validity used pain, numbness, and walking capacity as external criteria. The test-retest reliability with an interval of 1 to 5 weeks was analyzed in 163 patients.
Qualitative study extracted 10 domains and created a pool of 36 items. With factor analysis, items with factor loading less than 0.35 were excluded, and 25 items in 8 domains were selected. The Cronbach α of these items was 0.929. The coefficient of the test-retest reliability was 0.807. Pain, numbness, and walking capacity were significantly correlated with the scores of the LSS symptom scale.
A 25-item LSS symptom scale was developed, and its reliability and validity were confirmed.
横断面研究。
我们开发了一种可靠且有效的工具来衡量腰椎管狭窄症（LSS）患者的症状严重程度。
关于 LSS 的研究已经调查了药物治疗与保守治疗和手术治疗的疗效比较，研究了治疗效果的预测因素，并确定了术后生活质量。然而，研究中患者的背景因素各不相同，使得难以在研究之间进行比较。
首先进行焦点小组访谈，并使用定性方法对数据进行分析。然后，来自 9 家医院的 189 名确诊为 LSS 的患者完成了 LSS 问卷。进行探索性因子分析以检验结构效度，并计算 Cronbach α 系数以检验内部一致性。使用疼痛、麻木和行走能力作为外部标准来检验效标关联效度。在 163 名患者中分析了间隔 1 至 5 周的测试-重测信度。
定性研究提取了 10 个领域，并创建了一个包含 36 个项目的池。通过因子分析，将因子负荷小于 0.35 的项目排除在外，并选择了 8 个领域的 25 个项目。这些项目的 Cronbach α 为 0.929。测试-重测可靠性的系数为 0.807。疼痛、麻木和行走能力与 LSS 症状量表的评分显著相关。
开发了一种 25 项 LSS 症状量表，并验证了其可靠性和有效性。
