Cumulative lead exposure and tooth loss in men: the normative aging study.

Environ Health Perspect · 2009 · PMC2790506 · PMID 20019902

Europe PMC DOI

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a clear trendno p-value reported

This association showed a clear trend across tertiles of bone lead biomarkers and remained significant when we adjusted for a number of confounding factors, including age, smoking, and diabetes.

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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.