Spine
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Economic evaluation of the costs of low back pain (LBP) in Spain from a societal perspective, including direct and indirect costs, based on a national representative sample of the general population, the National Health Survey of 2017 (NHS 2017). ⋯ 3.
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Retrospective cohort study using prospectively collected data. ⋯ 3.
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Randomized Controlled Trial Multicenter Study
Postoperative Single-shot Epidural Fentanyl and Bupivacaine for Postoperative Analgesia After Lumbar Decompression: A Prospective, Double-blind Randomized Study.
Randomized clinical trial. ⋯ 2.
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Multicenter Study
Long-term Results After Surgical or Nonsurgical Treatment in Patients With Degenerative Lumbar Spinal Stenosis: A Prospective Multicenter Study.
Prospective, multicenter cohort study. ⋯ 3.