Three decades of silicosis: disease trends at autopsy in South African gold miners.

Environ Health Perspect · 2010 · PMC2854773 · PMID 20194070

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an increasing trendno p-value reported

In addition, although the year group-specific standardized proportions with silicosis were very similar for the white miners who died from nonexternal causes, we found an increasing trend in these proportions for black miners during the period of the study.

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