Identifying an indoor air exposure limit for formaldehyde considering both irritation and cancer hazards.

Crit Rev Toxicol · 2011 · PMC3175005 · PMID 21635194

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a significant trendno p-value reported

Although leukemia was still not significantly elevated in the cohort (SMR=1.02, 95% CI 0.85-1.22), there was a significant trend (p trend = .02) with peak exposure (but not with average intensity, cumulative, or duration of exposure or number of peak exposures) that was achieved only when unexposed and low-exposed workers were included in the analysis.

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