AOAC-RI ERP Micro June 2016
OMAMAN-29 A/ Collaboartive Study Manuscript OMA ERP June 2016 ERP Use Only
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 (Low Inoculum Level) 2
Candidate presumptive (CP)
Candidate confirmed (CC)
Candidate result (C)
Reference method (R)
C vs. R
Matrix/ Inoculation Level
Statistic
Laboratory
POD (CP) 0.58 0.58 0.33 0.42 0.50 0.58 0.58 0.58 0.42 0.42 0.52 0.43 0.60 0.51 0.45 0.52 0.00 0.00 0.15 0.51 0.46 0.52 NA 0.66 NA
POD (CC) 0.58 0.50 0.33 0.42 0.50 0.58 0.58 0.50 0.42 0.42 0.50 0.41 0.59 0.51 0.46 0.52 0.00 0.00 0.14 0.51 0.46 0.52 NA 0.66 NA
POD (C) 0.58 0.50 0.33 0.42 0.50 0.58 0.58 0.50 0.42 0.42 0.50 0.41 0.59 0.51 0.46 0.52 0.00 0.00 0.14 0.51 0.46 0.52 NA 0.66 NA
POD (R) 0.50 0.42 0.42 0.33 0.50 0.50 0.50 0.58 0.33 0.42 0.45 0.37 0.54 0.51 0.46 0.52 0.00 0.00 0.11 0.51 0.46 0.52 NA 0.50 NA
dLPOD (C,R)
dLPOD (CP,CC)
N
X
N
X
N
X
N
X
1 2 3 4 5 6 7
12 12 12 12 12 12 12
7 7 4 5 6 7 7
12 12 12 12 12 12 12
7 6 4 5 6 7 7
12 12 12 12 12 12 12
7 6 4 5 6 7 7
12 12 12 12 12 12 12
6 5 5 4 6 6 6
0.08 0.08 -0.08 0.08 0.00 0.08 0.08 -0.08 0.08 0.00 0.04 -0.08 0.17 NA 0.16 NA
0.00 0.08 0.00 0.00 0.00 0.00 0.00
Deli Turkey
8 a
NA NA
NA
NA
NA
NA
NA
NA
NA
9
12
8
12
8
12
8
12
6
0.00
10 a
NA NA
NA
NA
NA
NA
NA
NA
NA
MPN/ Test Portion
11 12 13
12 12 12
7 5 5
12 12 12
6 5 5
12 12 12
6 5 5
12 12 12
7 4 5
0.08 0.00 0.00 0.02 -0.11 0.14
Estimate
All
132
68
132
66
132
66
132
60
0.63 0.49 0.80
LCL UCL LCL UCL LCL UCL UCL LCL s r b s L c s R d
0.8762 AOAC Research Institute Expert Review Panel Use Only 0.9123 0.9123 0.9829 a N/A – Laboratory did not participate or submit data for this matrix Value = Homogeneity test of laboratory PODs LCL – Lower Confidence Limit; UCL – Upper Confidence Limit
e
P T
3 4 5 6 7
b Repeatability Standard Deviation, c Among-Laboratory Standard Deviation, d Reproducibility Standard Deviation, e P T
23
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