Skip to main content

Table 3 Final linear mixed regression model for the β-galactosidase liquid assay for rnaIII gene expression and final model corrected for in vitro growth inhibition of Staphylococcus aureus by bovine non-aureus staphylococci (NAS)

From: Metabolites of bovine-associated non-aureus staphylococci influence expression of Staphylococcus aureus agr-related genes in vitro

Predictor variables Final model Final model corrected for in vitro growth inhibition
β1 SE2 LSM3 p value4 β SE LSM p value
Intercept 1.42 0.05   1.53 0.10  
Time of measurement     < 0.0001      < 0.0001
 1 h Referent 28.46   Referent 26.45  
 2 h 0.15 0.03 43.24   0.15 0.03 40.20  
 3 h −0.005 0.04 43.79   −0.005 0.04 40.70  
 4 h 0.03 0.05 47.65   0.03 0.05 44.30  
NAS species     0.0002     0.0275
 S. aureus + S. chromogenes 0.06 0.06 36.20   0.07 0.06 35.65  
 S. aureus + S. epidermidis 0.04 0.08 60.63   –0.04 0.10 50.41  
 S. aureus + S. simulans Referent 29.22   Referent 28.67  
Habitat     NS5     
 Milk     
 Teat apex     
In vitro growth inhibition6     NS     (0.2957)8
 None Referent 48.76  
 Partial −0.11 0.10 38.14  
 Total −0.25 0.16 27.70  
NAS species × Time of measurement7     < 0.0001     < 0.0001
NAS species × Habitat NS    
NAS species × In vitro growth inhibition NS    
Habitat × In vitro growth inhibition NS    
Habitat × Time of measurement NS    
  1. 1Estimate.
  2. 2Standard error.
  3. 3Least square means after back transformation.
  4. 4Overall P value for fixed effects.
  5. 5Non-significant.
  6. 6See Materials and methods.
  7. 7The interaction term is visualized in Figure 2B.
  8. 8Forced into the model.