Bupivacaine versus lidocaine analgesia for neonatal circumcision.

BMC Pediatr · 2005 · PMC1164419 · PMID 15907216

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probably not significantno p-value reported

Since the parents in both groups were instructed in an identical manner (verbal and written instructions) to give acetaminophen if they felt that their son was in pain, this potential bias was probably not significant.

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Quoted from the open-access full text in Europe PMC under the licence the publisher applied. The sentence is reproduced exactly as published; the emphasis is ours.