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Table 2 Modelled association between daily gain, faecal dry matter, Lawsonia intracellularis and porcine circovirus a

From: Association between average daily gain, faecal dry matter content and concentration of Lawsonia intracellularis in faeces

Variable Coeficientb Standard P-valuec
    error  
 Outcome Average daily gain for day 1–7 prior to collection of the examined faecal sample (kg/day)    
 Independent 0 = L. intracellularis qPCR negative 0a   
 Categorical 1 = L. intracellularis numbers between limit of dection and lower limit of dynamic range 0.18a 0.159  
  2 = L. intracellularis numbers within dynamic range 0.702b 0.279  
  3 = L. intracellularis numbers above dynamic range −0.527c 0.177 <0.0001
  0 = PCV2 qPCR negative 0   
  1 = PCV2 copy numbers below dynamic range 0.019 0.048  
  2 = PCV2 copy numbers within dynamic range −0.009 0.032 0.86
  Gender (barrow/female) 0.025 0.024 0.30
 Continuous L. intracellularis bacteria numbers within dynamic range (log10 bacteria/g faeces) −0.144 0.040 <0.0001
  PCV2 copy numbers within dynamic range (log10 copies/g faeces) 0.018 0.026 0.50
  Faecal dry matter content (%) 0.010 0.006 0.099
  Observation day (1–19) 0.021 0.002 <0.0001
  Start-weight (kg) 0.034 0.005 <0.0001
 Interaction 0 = L. intracellularis qPCR negative * faecal dry matter content 0a   
  1 = L. intracellularis numbers between limit of dection and lower limit of dynamic range * faecal dry matter content −0.008ab 0.007  
  2 = L. intracellularis numbers within dynamic range * faecal dry matter content −0.028b 0.013  
  3 = L. intracellularis numbers above dynamic range * faecal dry matter content 0.018c 0.008 0.0002
  L. intracellularis bacteria numbers within dynamic range (log10 bacteria/g faeces) * faecal dry matter content 0.006 0.002 0.003
 Intercept   −0.36 0.15  
 Randomd Pen 0.013   
  Pig 0.00004   
  1. aFor non-significant variables the p-values and coefficients at the time of removal from the model is displayed.
  2. bCoefficients with different superscripts within the same variable are significantly different (p < 0.05); cP-values for overall effect of variable; dRandom effect coefficients displayed as variance.