The relationship between early childhood blood lead levels and performance on end-of-grade tests.

Environ Health Perspect · 2007 · PMC1940087 · PMID 17687454

Europe PMC DOI

hedged sentences

0.0500

closest p · 1.0× alpha

0.0500

boldest claim

The sentences

marginally significantp = 0.05actually significant

For the 4th-grade reading analysis, the coefficient on the dummy variable for a blood lead level of 2 μg/dL is negative and marginally significant at p = 0.05.

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highly significantno p-value reported

The coefficient on the age at which the blood screen occurred is negative and highly significant, indicating that a higher blood lead level at a later age has a stronger depressive effect on test performance.

also in 132,142 other papers

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.