Cut-off Value for Body Mass Index in Predicting Surgical Success in Patients with Lumbar Spinal Canal Stenosis
Study Design Case-control. Purpose To determine optimal cut-off value for body mass index (BMI) in predicting surgical success in patients with lumbar spinal canal stenosis (LSCS). Overview of Literature BMI is an essential variable in the assessment of patients with LSCS. Methods We conducted a pro...
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| Format: | Article |
| Language: | English |
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Korean Spine Society
2018-12-01
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| Series: | Asian Spine Journal |
| Subjects: | |
| Online Access: | http://asianspinejournal.org/upload/pdf/asj-2018-12-6-1085.pdf |
| _version_ | 1823941460969390080 |
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| author | Parisa Azimi Taravat Yazdanian Sohrab Shahzadi Edward C. Benzel Shirzad Azhari Hossein Nayeb Aghaei Ali Montazeri |
| author_facet | Parisa Azimi Taravat Yazdanian Sohrab Shahzadi Edward C. Benzel Shirzad Azhari Hossein Nayeb Aghaei Ali Montazeri |
| author_sort | Parisa Azimi |
| collection | DOAJ |
| description | Study Design Case-control. Purpose To determine optimal cut-off value for body mass index (BMI) in predicting surgical success in patients with lumbar spinal canal stenosis (LSCS). Overview of Literature BMI is an essential variable in the assessment of patients with LSCS. Methods We conducted a prospective study with obese and non-obese LSCS surgical patients and analyzed data on age, sex, duration of symptoms, walking distance, morphologic grade of stenosis, BMI, postoperative complications, and functional disability. Obesity was defined as BMI of ≥30 kg/m2. Patients completed the Oswestry Disability Index (ODI) questionnaire before surgery and 2 years after surgery. Surgical success was defined as ≥30% improvement from the baseline ODI score. Receiver operating characteristic (ROC) analysis was used to estimate the optimal cut-off values of BMI to predict surgical success. In addition, correlation was assessed between BMI and stenosis grade based on morphology as defined by Schizas and colleague in total, 189 patients were eligible to enter the study. Results Mean age of patients was 61.5±9.6 years. Mean follow-up was 36±12 months. Most patients (88.4%) were classified with grades C (severe stenosis) and D (extreme stenosis). Post-surgical success was 85.7% at the 2-year follow-up. A weak correlation was observed between morphologic grade of stenosis and BMI. Rates of postoperative complications were similar between patients who were obese and those who were non-obese. Both cohorts had similar degree of improvement in the ODI at the 2-year follow-up. However, patients who were non-obese presented significantly higher surgical success than those who were obese. In ROC curve analysis, a cut-off value of ≤29.1 kg/m2 for BMI in patients with LSCS was suggestive of surgical success, with 81.1% sensitivity and 82.2% specificity (area under the curve, 0.857; 95% confidence interval, 0.788–0.927). Conclusion This study showed that the BMI can be considered a parameter for predicting surgical success in patients with LSCS and can be useful in clinical practice. |
| first_indexed | 2024-12-17T04:27:23Z |
| format | Article |
| id | doaj.art-42953702d4b04575847e612aa0b83f46 |
| institution | Directory Open Access Journal |
| issn | 1976-1902 1976-7846 |
| language | English |
| last_indexed | 2024-12-17T04:27:23Z |
| publishDate | 2018-12-01 |
| publisher | Korean Spine Society |
| record_format | Article |
| series | Asian Spine Journal |
| spelling | doaj.art-42953702d4b04575847e612aa0b83f462022-12-21T22:03:39ZengKorean Spine SocietyAsian Spine Journal1976-19021976-78462018-12-011261085109110.31616/asj.2018.12.6.1085969Cut-off Value for Body Mass Index in Predicting Surgical Success in Patients with Lumbar Spinal Canal StenosisParisa Azimi0Taravat Yazdanian1Sohrab Shahzadi2Edward C. Benzel3Shirzad Azhari4Hossein Nayeb Aghaei5Ali Montazeri6 Functional Neurosurgery Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran School of Medicine, Capital Medical University, Beijing, China Functional Neurosurgery Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran Department of Neurosurgery, Cleveland Clinic Foundation, Cleveland, OH, USA Functional Neurosurgery Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran 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, Academic Center for Education, Culture and Research, Tehran, IranStudy Design Case-control. Purpose To determine optimal cut-off value for body mass index (BMI) in predicting surgical success in patients with lumbar spinal canal stenosis (LSCS). Overview of Literature BMI is an essential variable in the assessment of patients with LSCS. Methods We conducted a prospective study with obese and non-obese LSCS surgical patients and analyzed data on age, sex, duration of symptoms, walking distance, morphologic grade of stenosis, BMI, postoperative complications, and functional disability. Obesity was defined as BMI of ≥30 kg/m2. Patients completed the Oswestry Disability Index (ODI) questionnaire before surgery and 2 years after surgery. Surgical success was defined as ≥30% improvement from the baseline ODI score. Receiver operating characteristic (ROC) analysis was used to estimate the optimal cut-off values of BMI to predict surgical success. In addition, correlation was assessed between BMI and stenosis grade based on morphology as defined by Schizas and colleague in total, 189 patients were eligible to enter the study. Results Mean age of patients was 61.5±9.6 years. Mean follow-up was 36±12 months. Most patients (88.4%) were classified with grades C (severe stenosis) and D (extreme stenosis). Post-surgical success was 85.7% at the 2-year follow-up. A weak correlation was observed between morphologic grade of stenosis and BMI. Rates of postoperative complications were similar between patients who were obese and those who were non-obese. Both cohorts had similar degree of improvement in the ODI at the 2-year follow-up. However, patients who were non-obese presented significantly higher surgical success than those who were obese. In ROC curve analysis, a cut-off value of ≤29.1 kg/m2 for BMI in patients with LSCS was suggestive of surgical success, with 81.1% sensitivity and 82.2% specificity (area under the curve, 0.857; 95% confidence interval, 0.788–0.927). Conclusion This study showed that the BMI can be considered a parameter for predicting surgical success in patients with LSCS and can be useful in clinical practice.http://asianspinejournal.org/upload/pdf/asj-2018-12-6-1085.pdfLumbar spinal stenosisPredictingSurgical successROC curveBody mass index |
| spellingShingle | Parisa Azimi Taravat Yazdanian Sohrab Shahzadi Edward C. Benzel Shirzad Azhari Hossein Nayeb Aghaei Ali Montazeri Cut-off Value for Body Mass Index in Predicting Surgical Success in Patients with Lumbar Spinal Canal Stenosis Asian Spine Journal Lumbar spinal stenosis Predicting Surgical success ROC curve Body mass index |
| title | Cut-off Value for Body Mass Index in Predicting Surgical Success in Patients with Lumbar Spinal Canal Stenosis |
| title_full | Cut-off Value for Body Mass Index in Predicting Surgical Success in Patients with Lumbar Spinal Canal Stenosis |
| title_fullStr | Cut-off Value for Body Mass Index in Predicting Surgical Success in Patients with Lumbar Spinal Canal Stenosis |
| title_full_unstemmed | Cut-off Value for Body Mass Index in Predicting Surgical Success in Patients with Lumbar Spinal Canal Stenosis |
| title_short | Cut-off Value for Body Mass Index in Predicting Surgical Success in Patients with Lumbar Spinal Canal Stenosis |
| title_sort | cut off value for body mass index in predicting surgical success in patients with lumbar spinal canal stenosis |
| topic | Lumbar spinal stenosis Predicting Surgical success ROC curve Body mass index |
| url | http://asianspinejournal.org/upload/pdf/asj-2018-12-6-1085.pdf |
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