162-163 / 471
Table 2014.2A (cont’d)
: Comparative Results for the Detection of
Listeria
in Full Fat Cottage Cheese (4% Milk Fat) by the 3M
™
MDA
Listeria
Method vs.
1
AOAC OMA 993.12 in a Collaborative Study (High Level)
2
Statistic
MPN/
Test Portion 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)
4.83
3.30
7.07
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
a
NA NA
NA
NA NA
NA
NA NA
NA
NA NA
NA
NA
NA
5
a
NA NA
NA
NA NA
NA
NA NA
NA
NA NA
NA
NA
NA
6
a
12
12
1.00
12
12
1.00
12
12
1.00
12
7
0.58
0.42
0.00
7
12
12
1.00
12
12
1.00
12
12
1.00
12
12
1.00
0.00
0.00
8
12
12
1.00
12
12
1.00
12
12
1.00
12
12
1.00
0.00
0.00
9
12
12
1.00
12
12
1.00
12
12
1.00
12
12
1.00
0.00
0.00
10
12
12
1.00
12
12
1.00
12
12
1.00
12
12
1.00
0.00
0.00
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
a
12
2
0.17
12
2
0.17
12
12
1.00
12
12
1.00
-0.83
0.00
14
12
12
1.00
12
12
1.00
12
12
1.00
12
12
1.00
0.00
0.00
15
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
1.0000
1.0000
1.0000
1.0000
a
Results were not used in statistical analysis due to deviation from testing protocol.
3
c
Repeatability Standard Deviation,
d
Among-Laboratory Standard Deviation,
e
Reproducibility Standard Deviation,
f
P
T
Value =Homogeneity test of laboratory PODs
4
LCL – Lower Confidence Limit; UCL – Upper Confidence Limit;
NA- laboratory results were not received
5
6
7
8
Candidates for 2016 Method of the Year
132