Retinal nerve fibre layer loss in hereditary spastic paraplegias is restricted to complex phenotypes.

BMC Neurol · 2012 · PMC3564819 · PMID 23176075

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failed to reach statistical significanceno p-value reported

Whole HSP-cohort HSP patients demonstrated a tendency to reduced foveal thickness and thinning of overall RNFL, which both failed to reach statistical significance compared to the control group.

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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.