Salt intake, stroke, and cardiovascular disease: meta-analysis of prospective studies.

BMJ · 2009 · PMC2782060 · PMID 19934192

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showed a trendno p-value reported

The evaluation of individual studies showed a trend towards a direct association between salt intake and risk of cardiovascular disease in 10 cohorts, with significantly higher relative risk in six.

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highly significantno p-value reported

We tried to overcome the problem with meta-regression analysis, which provided evidence of a highly significant dose-response relation between the difference in sodium intake and the increase in risk of both stroke and cardiovascular disease.

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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.