A comparative study of pre-operative oral clonidine and pregabalin on post-operative analgesia after spinal anesthesia.

Anesth Essays Res · 2014 · PMC4173598 · PMID 25886102

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The sentences

highly significantno p-value reported

All analysis was two-tailed and P < 0.05 was considered to be statistically significant and a P < 0.0001 as highly 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.