The influence of study population and definition of improvement on the smallest detectable change and the minimal important change of the neck disability index.

Health Qual Life Outcomes · 2014 · PMC4080689 · PMID 24735985

Europe PMC DOI

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a clear trendno p-value reported

A clear trend can be seen of an increasing change score in accordance with both GPE scores.

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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.