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

Table 5.

Weekly condemnation rate (CR), attributable risk (AR), and expected incidence rate (EIR) of “dead” condemnations by temperature index category in 149 slaughter plants with temperature data within 100 miles of plant location for United States Swine 2010–2015.

Min temp^b (°F)	Est. prob. condemned CR	AR	EIR (per 10,000)
Roaster
Baseline	0.00123^a		12
Cool	0.00149^a	0.00026	14
Cold	0.00191	0.00068	19
Very cold	0.00271^a	0.00148	27
Market
Baseline	0.0030^a		30
Cool	0.0029^a	−0.0001	29
Cold	0.0033^a	0.0003	33
Very cold	0.0043^a	0.0013	43
Cull sows
Baseline	0.0027^a		27
Cool	0.0022^a	−0.0005	22
Cold	0.0023^a	−0.0004	23
Very cold	0.0029^a	0.0002	29

Estimated CR are based on a zero-inflated negative binomial generalized linear mixed model.

^aSignificant at alpha = 0.05. All heat index (HI) categories are nested within swine classes. For example, a significant proportion of variability in “dead condemnations” was accounted for by the BASELINE HI category nested within the ROASTER class after accounting for the offset term, log of total swine, and all other factors in the model.

^bMinimum 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.