. 2017 Apr 5;12(4):e0175034. doi: 10.1371/journal.pone.0175034

Table 2. Mean Ph. Eur. Score (±SD) and percentage of affected lungs by CVPC (±SD) in seropositive and seronegative farms from the slaughterhouse study.

Different superscripts within a row indicate significant differences among types of farms (p<0.05).

	Seropositive Farms	Seronegative Farms
Mean Ph. Eur. Score (±SD)	6.09 (± 3.89)^a	2.47 (± 1.91)^b
Mean percentage of affected lungs (±SD)	71.73 (± 12.78)^a	57.57 (± 12.07)^b