Occipital nerve stimulation for chronic migraine--a systematic review and meta-analysis.

PLoS One · 2015 · PMC4368787 · PMID 25793740

Europe PMC DOI

hedged sentence

—

closest p

—

boldest claim

The sentences

did not reach statistical significanceno p-value reported

The pooled result did not reach statistical significance and suggested a high level of heterogeneity between the studies (ONS vs. sham control at 3 months, relative risk 2.07, 95% CI 0.50 to 8.55, I 2 = 51%; Fig. 3 ).

also in 111,027 other papers

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.