AOAC-RI ERP Book Micro Jan 19 2017
OMAMAN-35 A : Collaborative Study Manuscript For ERP Use Only January 2017
Table 2016.2A (cont’d.) : Comparative Results for the Detection of Salmonella in Raw Ground Beef (73% Lean) by the 3M ™ MDA 2 - E. coli O157 (including 1 H7) Method vs. USDA/FSIS MLG Chapter. 5.09 in a Collaborative Study (High Inoculum Level) 2
Candidate presumptive (CP)
Candidate confirmed (CC)
Matrix/ Inoculation Level
Candidate result (C)
Reference method (R)
C vs. R
Statistic
Laboratory
POD (CP) 0.500 0.917 1.000 0.667 1.000 0.917 0.917 0.583 0.750 NA NA NA
POD (CC) 0.500 0.917 1.000 0.667 1.000 0.917 0.917 0.667 0.750 NA NA NA
POD (C) 0.500 0.917 1.000 0.500 1.000 0.917 0.917 0.500 0.750 NA NA NA
POD (R) 0.667 0.917 0.750 0.833 0.917 1.000 0.917 0.833 0.333 NA NA NA
dLPOD (C,R)
dLPOD (CP,CC)
N
X
N
X
N
X
N
X
1 2 3 4 5 6 8 9
12 12 12 12 12 12 12 12 12
6
12 12 12 12 12 12 12 12 12
6
12 11 12 12 12 12 12 12 12
6
12 12 12 12 12 12 12 12 12
8
-0.167
0.00
12
11
11
11
0.00
0.083
NA NA
NA NA
NA NA
NA NA
NA
NA 0.00 0.00 0.00 NA 0.00 0.00
12
12
12
9
0.250 -0.333 0.083
Raw Ground Beef (73% Lean)/ High
8
8
6
10 11 12 11
12
12
12
7 a
NA NA
NA NA
NA NA
NA NA
NA
11 11
11 11
11 11
-0.083
0.00 NA
10 a 11 12 14 15 13 a
NA NA
NA NA
NA NA
NA NA
NA
7 9
8 9
6 9
10
-0.333 0.417
-0.083
4
0.00
MPN/ Test Portion
NA NA
NA
NA NA
NA
NA NA
NA
NA NA
NA
NA
NA
12
9
0.750
12
8
0.667
12
8
0.667
12
9
0.750
-0.083
0.083
NA NA
NA
NA NA
NA
NA NA
NA
NA NA
NA
NA
NA
Estimate
All
120
97
0.81 0.67 0.93 0.37 0.33 0.42 0.15 0.07 0.32 0.40 0.35 0.50
120
96
0.80 0.69 0.91 0.38 0.34 0.44 0.13 0.04 0.29 0.40 0.36 0.49
120
92
0.77 0.63 0.91 0.39 0.34 0.45 0.18 0.09 0.37 0.43 0.38 0.52
120
95
0.79 0.67 0.92 0.38 0.34 0.44 0.15 0.07 0.33 0.41 0.37 0.51 0.01
-0.025 -0.129 0.080
0.008 -0.092 0.109
LCL UCL LCL UCL LCL UCL UCL LCL s r b s L c s R d
1.92 1.00- 3.42
0.005 AOAC Research Institute Expert Review Panel Use Only 0.018 0.002 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
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