TABLE 3.

Comparative yield of clinically significant isolates of bacteria and yeast from four bottle types

Microorganism(s)	Total no. of isolates	No. of isolates from:				P
		Standard aerobic	FAN aerobic	Standard anaerobic	FAN anaerobic	Aerobic standard vs FAN aerobic	Anaerobic standard vs FAN anaerobic
Gram-positive cocci	138	100	125	109	127	<0.001	<0.001
S. aureus	51	36	50	38	50	<0.001	<0.001
Coagulase-negative staphylococcus	50	39	48	41	45	0.003	NS
Enterococci	18	11	12	14	15	NSa	NS
Streptococci	19	14	15	16	17	NS	NS
Gram-positive bacilli	4	4	3	2	2	NCb	NC
Gram-negative bacilli	54	44	46	39	45	NS	NS
Enterobacteriaceae	39	31	34	31	37	NS	0.03
Other GNBc	15	13	12	8	8	NS	NS
Anaerobes	9	1	1	5	9	NC	NC
Yeast	20	20	19	8	4	NS	NC
All microorganisms	225	169	194	163	187	<0.001	<0.001

^aNS, not significant (P > 0.05). 

^bNC, not calculated when total number of isolates was ≤10. 

^cGNB, gram-negative bacilli.