Effectiveness of the live attenuated and the inactivated influenza vaccine in two-year-olds - a nationwide cohort study Finland, influenza season 2015/16.

Euro Surveill · 2016 · PMC5073199 · PMID 27684447

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borderline non-significantno p-value reported

Due to small numbers, the influenza B analysis yielded statistically borderline non-significant point estimates ( Table 2 ).

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did not reach statistical significanceno p-value reported

The NVR with vaccination data since year 2009 allows stratified analyses of effectiveness by previously received seasonal influenza vaccine doses; past exposure to influenza vaccines appears to contribute to increased effectiveness in the two-year-old children during the season 2015/16, but due to the relatively small sample size, this difference did not reach statistical significance.

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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.