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 E. coli O157:H7 in Raw Ground Beef (73% Lean) by the 3M ™ MDA 2 - E. coli O157 1 (including H7) Method vs. USDA/FSIS MLG Chapter. 5.09in 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) 0.167 0.417 0.167 0.167 0.417 0.250 0.250 0.333 0.333 NA NA NA
POD (CC) 0.167 0.250 0.167 0.167 0.417 0.250 0.250 0.250 0.333 NA NA NA
POD (C) 0.167 0.250 0.167 0.167 0.417 0.250 0.250 0.250 0.333 NA NA NA
POD (R) 0.167 0.417 0.333 0.333 0.583 0.083 0.333 0.333 0.417 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
2 5
12 12
2 3
12 12
2 3
12 12
2 5
0.00
0.00
-0.167
0.167
NA NA
NA NA
NA NA
NA NA
NA
NA
Raw Ground Beef (73% Lean)/ Low
12 12 12 12 12 12 12
2 2 5 3 3 4 4
NA NA
2 2 5 3 3 3 4
NA NA
2 2 5 3 3 3 4
12
4 4 7 1 4 4 5
-0.167 -0.167 -0.167 0.167 -0.083 -0.083 -0.083 NA NA
0.00 0.00 0.00 NA 0.00 0.00 NA 0.00 NA 0.083 -0.167
NA
12
12
12
7 a
NA NA
NA NA
NA NA
NA NA
12 12 12 12
12 12 12 12
12 12 12 12
10 a 11 12 14 15 13 a
NA NA
NA NA
NA NA
NA NA
NA NA
NA
NA NA
NA
NA NA
NA
NA NA
NA
NA
MPN/ Test Portion
12
2
0.167
12
4
0.333
12
2
0.167
12
6
0.500
-0.333
NA NA
NA
NA NA
NA
NA NA
NA
NA NA
NA
NA
NA
Estimate
All
120 32
0.27 0.19 0.35 0.45 0.40 0.52 0.00 0.00 0.16 0.45 0.40 0.52
120 31
0.26 0.18 0.34 0.45 0.40 0.52 0.00 0.00 0.13 0.45 0.40 0.51
120 29
0.24 0.16 0.32 0.44 0.39 0.51 0.00 0.00 0.13 0.44 0.39 0.50
120 42
0.35 0.26 0.44 0.48 0.42 0.52 0.05 0.00 0.23 0.48 0.43 0.52
-0.11 -0.22 0.01
0.01 -0.10 0.12
LCL UCL LCL UCL LCL UCL UCL LCL s r b s L c s R d
0.29 0.09- 0.55
0.760 0.342 a N/A – Laboratory did not participate or submit data for this matrix, b Repeatability Standard Deviation, c Among-Laboratory Standard Deviation, d Reproducibility Standard Deviation, AOAC Research Institute Expert Review Panel Use Only 0.920 0.908 e P T Value = Homogeneity test of laboratory PODs,LCL – Lower Confidence Limit; UCL – Upper Confidence Limit
e
P T
3 4
18
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