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)

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				–

¹Estimate.

²Standard error.

³Least square means after back transformation.

⁴Overall P value for fixed effects.

⁵Non-significant.

⁶See Materials and methods.

⁷The interaction term is visualized in Figure 2B.

⁸Forced into the model.