A randomized placebo-controlled trial of idebenone in Leber's hereditary optic neuropathy.

Brain · 2011 · PMC3170530 · PMID 21788663

Europe PMC DOI

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did not reach statistical significanceno p-value reported

The primary end-point did not reach statistical significance in the intention to treat population.

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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.