Jensen RK, et al. - A systematic review and meta-analysis were performed to determine the prevalence of degenerative lumbar spinal stenosis (LSS) in adults, identified by clinical symptoms and/or radiological criteria. This study enrolled 41 papers reporting on 55 study samples. Researchers calculated pooled prevalence measures by care setting and clinical or radiological diagnostic criteria. It was indicated that mean prevalence estimates based on clinical diagnoses vary between 11 and 39%, and the measures based on radiological diagnoses similarly vary between 11 and 38%. The outcomes are based on studies with a high risk of bias, and the pooled prevalence calculations should, therefore, be interpreted with caution. There is a requirement for future low risk-of-bias research elucidating clinical and radiological diagnostic criteria of lumbar spinal stenosis with a growing elderly population.