Seroprevalence of pertussis antitoxin (anti-PT) in Sweden before and 10 years after the introduction of a universal childhood pertussis vaccination program.

APMIS · 2009 · PMC3427879 · PMID 20078557

Europe PMC DOI

hedged sentence

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closest p

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boldest claim

The sentences

close-to-significantno p-value reported

Trend tests on all age groups younger than 20 years showed a close-to-significant decrease between 5 and 15 years of age in the 1997 cohort.

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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.