TABLE 3.

Comparative times to detection of MAC from BACTEC 13A, MYCO/F LYTIC, BacT/ALERT MB, and ISOLATOR 10 systems

Bottle pair (bottle 1, bottle 2)	No. of pairs	Mean (range) time (days) to positivity		P value
		Bottle 1	Bottle 2
BACTEC 13A, MYCO/F LYTIC	33	15.3 (6-42)	12.8 (7-21)	NSa
BACTEC 13A, BacT/ALERT MB	38	14.1 (6-39)	11.6 (1-42)	0.035
BACTEC 13A, ISOLATOR 10	26	12.6 (6-32)	20.0 (8-42)	<0.001
MYCO/F LYTIC, BacT/ALERT MB	33	12.8 (7-23)	11.0 (5-26)	0.038
MYCO/F LYTIC, ISOLATOR 10	24	13.2 (7-23)	20.4 (8-42)	<0.001
BacT/ALERT MB, ISOLATOR 10	24	9.9 (1-17)	19.0 (8-42)	<0.001

^aNS, not significant.