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. 2017 May 11;4:67. doi: 10.3389/fvets.2017.00067

Table 6.

The risk ratio (RR) and 95% confidence interval range of “dead” condemnations by minimum temperature category in 149 slaughter plants with temperature data within 100 miles of plant location for United States Swine 2010-2015.

Minimum temperaturea (°F) RR Confidence interval
Roaster
Baseline 1.00
Cool 1.21 (1.10, 1.33)
Cold 1.55 (1.41, 1.70)
Very cold 2.20 (1.98, 2.44)
Market
Baseline 1.00
Cool 0.97 (0.86, 1.09)
Cold 1.10 (0.98, 1.24)
Very cold 1.43 (1.26, 1.63)
Cull sows
Baseline 1.00
Cool 0.81 (0.72, 0.91)
Cold 0.85 (0.76, 0.95)
Very cold 1.07 (0.95, 1.21)

aMinimum temperature categories of very cold, cold, and cool ranges are −17 to 9°F, 10–39°F, and 40–50°F, respectively. The baseline temperature category includes average temperatures of 54–79°F.