Efficacy of post-operative analgesia after posterior lumbar instrumented fusion for degenerative disc disease: a prospective randomized comparison of epidural catheter and intravenous administration of analgesics.

Orthop Rev (Pavia) · 2010 · PMC3143952 · PMID 21808704

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did not reach statistical significanceno p-value reported

The differences did not reach statistical significance ( Table 1 ).

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