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Table 3 p-values (chi-square test) calculated for different cut-off Cq values for the intestinal pathogens

From: Objective pathogen monitoring in nursery and finisher pigs by monthly laboratory diagnostic testing

Diarrhoeic event +/− Cq ≤ 16 Cq ≤ 18 Cq ≤ 20 Cq ≤ 22 Cq ≤ 24 Cq ≤ 26 Cq ≤ 27
p-value (PCV2) 0.87 0.30 0.48 0.08 0.14 na na na
p-value (B. pilosicoli) 0.06 na 0.005 0.001 0.007 0.004 0.03 0.06
p-value (L. intracellularis) 0.12 na 0.006 0.008 0.03 0.01 0.91 na
p-value (E. coli F4) 0.43 na na 0.82 0.43 na na na
p-value (E. coli F18) 0.06 na na na 0.82 0.58 na na
p-value (Rotavirus A) 0.0002 na na 0.3 0.009 0.007 na na
  1. na no analysis