Table 4.

Frequency of single and mixed bacterial species from patients with enterococcal bacteremia or patients with S. aureus/E. coli bacteremia with respect to the full sample size (upper table) and the subgroup of deceased patients (lower table)

All patients
	2 or More species*	Single species*	Odds ratio	95% Confidence interval	P
Enterococcal bacteremia	73	194	3.8	2.6–5.6	<0.0001
Nonenterococcal bacteremia	59	600	Ref.
All patients
	2 or More species*	Single species*	Odds ratio	95% Confidence interval	P
Enterococcal bacteremia (other than E. faecalis or E. faecium)	6	8	7.63	2.6–22.7	0.0003
Bacteremia due to E. faecalis	29	83	3.6	2.2--5.9	<0.0001
Bacteremia due to E. faecium	38	103	3.7	2.4--5.9	<0.0001
Nonenterococcal bacteremia	59	600	Ref.
Deceased patients
	2 or More species	Single species	Odds ratio	95% Confidence interval	P
Enterococcal bacteremia	10	39	2.3	0.9--6.0	0.08
Nonenterococcal bacteremia	10	91	Ref.
Deceased patients
	2 or More species*	Single species*	Odds ratio	95% Confidence interval	P
Enterococcal bacteremia (other than E. faecalis or E. faecium)	1	1	9.1	0.5--156.9	0.13
Bacteremia due to E. faecalis	4	15	2.4	0.7--8.7	0.17
Bacteremia due to E. faecium	5	23	2.0	0.6--6.3	0.25
Nonenterococcal bacteremia	10	91	Ref.

^*Incomplete data for 2 data sets each