Prevalence of lumbar spinal stenosis in general and clinical populations: a systematic review and meta‑analysis The pooled prevalence estimates of LSS with a clinical diagnostic criterion were 11% in the general population and ranged from 25 to 39% in clinical populations. The prevalence of radiological signs of LSS was 11% in asymptomatic populations, 38% in the general populations and ranged from 15 to 32% in clinical populations. The results are based on studies with high risk of bias, and there was a substantial variety in the definition of diagnostic criteria between studies for both clinical symptoms and radiological signs of LSS and cautious interpretation of the results is therefore required.
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