Lung cancer incidence among Norwegian silicon carbide industry workers: associations with particulate exposure factors.

Occup Environ Med · 2012 · PMC3400144 · PMID 22611173

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a significant trendno p-value reported

Internal analyses showed associations between exposure level and lung cancer incidence for all investigated factors, but a significant trend only for total dust and cristobalite.

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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.