STUDY DESIGN: A cross-sectional study. OBJECTIVE: We developed a reliable and valid instrument to measure symptom severity in patients with lumbar spinal stenosis (LSS). SUMMARY OF BACKGROUND DATA: 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. METHODS: 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 alpha 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. RESULTS: 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 alpha 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. CONCLUSION: A 25-item LSS symptom scale was developed, and its reliability and validity were confirmed
Keywords : Adult,Aged,Aged,80 and over,analysis,Cross-Sectional Studies,diagnosis,drug therapy,Female,Focus Groups,Hospitals,Humans,Lumbar Vertebrae,Male,methods,Middle Aged,Pain,pathology,Patients,Psychometrics,Quality of Life,Severity of Illness Index,Spinal Stenosis,standards,surgery,Surveys and Questionnaires,therapy,Universities,Walking,, Validation,Symptom, stem cell treatment uk clinics
Date of Publication : 2012 Feb 1
Authors : Sekiguchi M;Wakita T;Otani K;Onishi Y;Fukuhara S;Kikuchi S;Konno S;
Organisation : Department of Orthopaedic Surgery, Fukushima Medical University School of Medicine, Fukushima, Japan. miho-s@fmu.ac.jp
Journal of Publication : Spine (Phila Pa 1976 )
Pubmed Link : https://www.ncbi.nlm.nih.gov/pubmed/21394072
The London Spine Unit : Harley Street UK. Specialists in Cutting Edge Technologies for Spinal Surgery
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