366-367 / 596
25
Table 2016.2A (cont’d.)
: Comparative Results for the Detection of
Listeria
in 125 g Deli Turkey Test Portions by the 3M
™
MDA 2 -
Listeria
Method vs.
1
USDA/FSIS MLG Chapter. 8.09 in a Collaborative Study (High Inoculum Level)
2
Statistic
Matrix/
Inoculation
Level
Laboratory
Candidate presumptive
(CP)
Candidate confirmed (CC)
Candidate result (C)
Reference method (R)
C vs. R
N
X
POD
(CP)
N
X
POD
(CC)
N
X
POD
(C)
N
X
POD
(R)
dLPOD
(C,R)
dLPOD
(CP,CC)
Deli
Turkey
1
12
12
1.00
12
12
1.00
12
12
1.00
12
12
1.00
0.00
0.00
2
12
12
1.00
12
12
1.00
12
12
1.00
12
12
1.00
0.00
0.00
3
12
12
1.00
12
12
1.00
12
12
1.00
12
12
1.00
0.00
0.00
4
12
12
1.00
12
12
1.00
12
12
1.00
12
12
1.00
0.00
0.00
5
12
12
1.00
12
12
1.00
12
12
1.00
12
12
1.00
0.00
0.00
6
12
12
1.00
12
12
1.00
12
12
1.00
12
12
1.00
0.00
0.00
7
12
12
1.00
12
12
1.00
12
12
1.00
12
12
1.00
0.00
0.00
8
a
NA NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
9
12
12
1.00
12
12
1.00
12
12
1.00
12
12
1.00
0.00
0.00
10
a
NA NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
MPN/
Test
Portion
4.52
3.19
6.42
11
12
12
1.00
12
12
1.00
12
12
1.00
12
12
1.00
0.00
0.00
12
12
12
1.00
12
12
1.00
12
12
1.00
12
12
1.00
0.00
0.00
13
12
12
1.00
12
12
1.00
12
12
1.00
12
12
1.00
0.00
0.00
Estimate
All
132 132
1.00
132 132
1.00
132
132
1.00
132 132
1.00
0.00
0.00
LCL
0.97
0.97
0.97
0.97
-0.03
-0.03
UCL
1.00
1.00
1.00
1.00
0.03
0.03
s
r
b
0.00
0.00
0.00
0.00
LCL
0.00
0.00
0.00
0.00
UCL
0.16
0.16
0.16
0.16
s
L
c
0.00
0.00
0.00
0.00
LCL
0.00
0.00
0.00
0.00
UCL
0.16
0.16
0.16
0.16
s
R
d
0.00
0.00
0.00
0.00
UCL
0.00
0.00
0.00
0.00
LCL
0.23
0.23
0.23
0.23
P
T
e
1.000
1.000
1.000
1.000
a
N/A – Laboratory did not participate or submit data for this matrix
3
b
Repeatability Standard Deviation,
c
Among-Laboratory Standard Deviation,
d
Reproducibility Standard Deviation,
e
P
T
Value = Homogeneity test of laboratory PODs
4
LCL – Lower Confidence Limit; UCL – Upper Confidence Limit
, N = number of samples tested, X = number of test samples with a positive result (presumptive or confirmed)
5
6
7
8