196-197 / 1195
25
regrowth
NA
5
5
1.0
(0.57, 1.0)
5
1.0
(0.57, 1.0)
0
(-0.45, 0.45)
Plastic
surfaces
LB/4”X4”
sponge/18 hr +/-
regrowth
S
. Mbandaka
(DD13240)
Control
5
0
0
(0, 0.43)
0
0
(0, 0.43)
0
(-0.45, 0.45)
NA
20
13
0.65
(0.43, 0.82)
13
0.65
(0.43, 0.82)
0
(-0.14, 0.14)
NA
5
5
1.0
(0.57, 1.0)
5
1.0
(0.57, 1.0)
0
(-0.45, 0.45)
Tile surfaces
BPW/4”X4”
sponge 18 hr +/-
regrowth
S
. Lexington
(DD13068)
Control
5
0
0
(0, 0.43)
0
0
(0, 0.43)
0
(-0.45, 0.45)
NA
20
6
0.3
(0.15, 0.52)
6
0.3
(0.15, 0.52)
0
(-0.14, 0.14)
NA
5
5
1.0
(0.57, 1.0)
5
1.0
(0.57, 1.0)
0
(-0.45, 0.45)
Tile surfaces
LB/4”X4” sponge
18 hr +/- regrowth
S
. Lexington
(DD13068)
Control
5
0
0
(0, 0.43)
0
0
(0, 0.43)
0
(-0.45, 0.45)
NA
20
9
0.45
(0.26, 0.66)
9
0.45
(0.26, 0.66)
0
(-0.14, 0.14)
NA
5
5
1.0
(0.57, 1.0)
5
1.0
(0.57, 1.0)
0
(-0.14, 0.14)
White
Pepper
TSB/25 g/22 hrs
S
. Newport
(DD13079)
Control
5
0
0
(0, 0.43)
0
0
(0, 0.43)
0
(-0.45, 0.45)
1.3 (0.81, 2.2)
20
14
0.7
(0.48, 0.85)
14
0.7
(0.48, 0.85)
0
(-0.14, 0.14)
26 (20, 44)
5
5
1.0
(0.57, 1.0)
5
1.0
(0.57, 1.0)
0
(-0.14, 0.14)
Ground Beef
with Soy
MLG
mTSB/325g/22 hr
S
. Typhimurium
(DD1467)
Control
5
0
0
(0, 0.43)
0
0
(0, 0.43)
0
(-0.14, 0.14)
1.0 (0.74, 1.4)
60
39
0.65
(0.52, 0.76)
39
0.65
(0.52, 0.76)
0
(-0.049, 0.049)
6.0 (4.4, 8.4)
5
5
1.0
(0.57, 1.0)
5
1.0
(0.57, 1.0)
0
(-0.45, 0.45)
Shell Eggs
MP/1000 g/48 hrs
S. Enteritidis
(ATCC13706)
Control
5
0
0
(0, 0.43)
0
0
(0, 0.43)
0
(-0.14, 0.14)
1.6 (0.93, 3.1)
20
17
0.85
(0.64, 0.95)
14
0.70
(0.48, 0.85)
0.15
(-0.11, 0.39)
a
MPN = Most Probable Number is based on the POD of reference method test portions across labs using the AOAC MPN calculator, with 95% confidence interval
b
N = Number of test potions
c
x = Number of positive test portions
d
POD
C
=
Candidate method presumptive positive outcomes confirmed positive
e
POD
R
= Reference method confirmed positive outcomes divided by the total number of trials
f
dPOD
C
= Difference between the candidate method and reference method POD values
g
95% CI = If the confidence interval of a dPOD does not contain zero, then the difference is statistically significant at the 5% level
Collaborative Study Approved Protocol
Expert Review Panel Use Only