Online Design Aid for Evaluating Manure Pit Ventilation Systems to Reduce Entry Risk.

Front Public Health · 2016 · PMC4880564 · PMID 27303661

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an increasing trendno p-value reported

One result from this analysis of 77 fatalities cases showed an increasing trend in the death rate: 1.6 per year from 1975 through 1984, 2.7 per year from 1985 through 1994, and 3.5 per year from 1995 through 2004.

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