Effectiveness of a school-based physical activity intervention on obesity in school children: a nonrandomized controlled trial.

BMC Public Health · 2014 · PMC4320634 · PMID 25510313

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a positive trendno p-value reported

Although the difference of overweight/obesity prevalence was not significant between two groups, our study resulted in a positive trend (change difference −4.0%).

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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.