TABLE 2.

Antagonism between S. aureus and other bacterial groups^a

Bacterial group	OR (95% CI) at wk:			Overall OR (95% CI)
	2	12	24
Corynebacteria	1.3 (0.55-2.8)b	2.8 (1.4-5.6)c	1.5 (0.65-3.4)b	2.0 (1.3-3.0)d
CoNS	8.6 (2.8-26.7)e	2.1 (1.0-4.2)f	0.78 (0.34-1.8)b	1.7 (1.1-2.5)g
Streptococci	0.78 (0.27-2.3)b	2.3 (0.97-5.6)b	0.57 (0.25-1.3)b	1.3 (0.81-2.1)b

^aOR (95% CI) and P values are given for the absence of S. aureus given colonization with each bacterial group. ORs were derived from univariate analyses, with conditional logistic regression used to calculate the overall effect, allowing for correlation between swabs taken from the same infant.

^bResult was not significant.

^cP = 0.003.

^dP = 0.002.

^eP < 0.0001.

^fP = 0.04.

^gP = 0.014.