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B
ird
et al
.:
J
ournal of
AOAC I
nternational
V
ol
.
100, N
o
.
1, 2017
87
Table 2016.07C. Comparative results for the detection of
Listeria
in 125 g deli turkey test portions by the 3M MDA 2–
Listeria
method versus USDA/FSIS MLG 8.09 in the collaborative study
Uninoculated control
Statistic
Matrix/
inoculation
level
Lab
CP
a
CC
b
C
c
R
d
C vs R
N
e
x
f
POD
CP
N x
POD
CC
N x
POD
C
N x
POD
R
dLPOD
Cvs R
dLPOD
CP vs CC
Deli turkey 1 12 0 0
.00 12 0 0.00 12 0 0.0012 0 0.00
0.00
0.00
2 12 0 0
.00 12 0 0.00 12 0 0.0012 0 0.00
0.00
0.00
3 12 0 0
.00 12 0 0.00 12 0 0.0012 0 0.00
0.00
0.00
4 12 0 0
.00 12 0 0.00 12 0 0.0012 0 0.00
0.00
0.00
5 12 0 0
.00 12 0 0.00 12 0 0.0012 0 0.00
0.00
0.00
6 12 0 0
.00 12 0 0.00 12 0 0.0012 0 0.00
0.00
0.00
7 12 0 0
.00 12 0 0.00 12 0 0.0012 0 0.00
0.00
0.00
8
g
NA NA NA NA NA NA NA NA NA NA NA NA
NA
NA
9 12 0 0
.00 12 0 0.00 12 0 0.0012 0 0.00
0.00
0.00
10
h
NA NA NA NA NA NA NA NA NA NA NA NA
NA
NA
11 12 0 0
.00 12 0 0.00 12 0 0.0012 0 0.00
0.00
0.00
12 12 0 0
.00 12 0 0.00 12 0 0.0012 0 0.00
0.00
0.00
13 12 0 0
.00 12 0 0.00 12 0 0.0012 0 0.00
0.00
0.00
Estimate
Labs
N x
POD
CP
N x
POD
CC
N x
POD
C
N x
POD
R
dLPOD
C vs R
dLPOD
CP vs CC
All
132 0 0
.00 132 0 0.00 132 0 0.00 132 0 0.00
0.00
0.00
LCL
i
0.00
0.00
0.00
0.00
–0.03
–0.03
UCL
j
0.03
0.03
0.03
0.03
0.03
0.03
s
r
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
k
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
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
l
1.0000
1.0000
1.0000
1.0000
Low inoculum level
Deli turkey 1 12 7 0.58 12 7 0.58 12 7 0.58 12 6 0.50
0.08
0.00
2 12 7 0.58 12 6 0.50 12 6 0.50 12 5 0.42
0.08
0.08
3 12 4 0.33 12 4 0.33 12 4 0.33 12 5 0.42
-0.08
0.00
4 12 5 0.42 12 5 0.42 12 5 0.42 12 4 0.33
0.08
0.00
5 12 6 0.50 12 6 0.50 12 6 0.50 12 6 0.50
0.00
0.00
6 12 7 0.58 12 7 0.58 12 7 0.58 12 6 0.50
0.08
0.00
7 12 7 0.58 12 7 0.58 12 7 0.58 12 6 0.50
0.08
0.00
8a NA NA NA NA NA NA NA NA NA NA NA NA
NA
NA
9 12 8 0.66 12 8 0.66 12 8 0.66 12 6 0.50
0.16
0.00
10a NA NA NA NA NA NA NA NA NA NA NA NA
NA
NA
MPN/
Test
Portion
11 12 7 0.58 12 6 0.50 12 6 0.50 12 7 0.58
-0.08
0.08
12 12 5 0.42 12 5 0.42 12 5 0.42 12 4 0.33
0.08
0.00
13 12 5 0.42 12 5 0.42 12 5 0.42 12 5 0.42
0.00
0.00
Estimate 0.63 All
132 68 0.52 132 66 0.50 132 66 0.50 132 60 0.45
0.04
0.02
LCL
0.49
0.43
0.41
0.41
0.37
-0.08
-0.11
UCL 0.80
0.60
0.59
0.59
0.54
0.17
0.14
s
r
b
0.51
0.51
0.51
0.51