Risk factors for chronic and recurrent otitis media-a meta-analysis.

PLoS One · 2014 · PMC3900534 · PMID 24466073

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a strong trendno p-value reported

However, these three risk factors should be at least considered as constituting a strong trend of risk factors for COM/ROM.

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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.