Massage therapy for osteoarthritis of the knee: a randomized dose-finding trial.

PLoS One · 2012 · PMC3275589 · PMID 22347369

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a clear trendno p-value reported

60 minute individual treatments, due to the design of the study, there is a clear trend for greater magnitude of changes in our outcomes in both of the 60-minute doses (Groups 3 and 4), compared to baseline, usual care, and the 30-minute dose groups.

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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.