Are brief interventions to increase physical activity cost-effective? A systematic review.

Br J Sports Med · 2016 · PMC4819643 · PMID 26438429

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might be significantno p-value reported

Similarly, Pringle et al 38 did not include out-of-pocket expenditures which might be significant and could influence the intervention attendance levels (apart from the cost-effectiveness of the intervention).

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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.