Microbiology Methods for ERP Review 3-2020
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Table 2020.1A : Summary of results for the detection of Salmonella in raw ground beef (80% lean) Method a GENE-UP ® Salmonella (SLM) w/ Alternative Confirmation
Extraction Method Inoculation Level
Non-inoculated
Low
High
Candidate Presumptive Positive/ Total # of Samples Analyzed Candidate Presumptive LPOD (CP) Candidate Confirmed Positive/ Total # of Samples Analyzed Candidate Confirmed LPOD (CC) Candidate Confirmed Positive/ Total # of Samples Analyzed Candidate Presumptive Positive that Confirmed LPOD (C) Positive Reference Samples/ Total # of Samples Analyzed
0/132
51/132
132/132
0.00 (0.00, 0.03)
0.39 (0.33, 0.44)
1.00 (0.95, 1.00)
0/132
50/132
130/132
0.00 (0.00, 0.03)
0.38 (0.31, 0.45)
0.98 (0.95, 1.00)
0/132
49/132
130/132
0.00 (0.00, 0.03)
0.37 (0.31, 0.43)
0.98 (0.95, 1.00)
0/132
51/132
127/132
Reference LPOD (R)
0.00 (0.00, 0.03)
0.39 (0.27, 0.51)
0.96 (0.89, 1.00)
dLPOD C (Candidate vs. Reference) b
0.00 (-0.03, 0.03)
-0.02 (-0.15, 0.12)
0.02 (-0.03, 0.09)
s r c
0.00
0.50
0.12
s L d
0.00
0.00
0.00
s R e
0.00
0.50
0.12
dLPOD CP (Candidate Presumptive vs. Candidate Confirmed) b
0.00 (-0.02, 0.02)
0.01 (-0.03, 0.04)
0.02 (-0.01, 0.04)
SE (dLPOD) f
0.01 0.00 0.00 0.00
0.02 0.50 0.00 0.50
0.01 0.00 0.00
s r
s L s R
0.00 a Results include 95% Confidence Intervals; b A confidence interval for dLPOD that does not contain the value 0 indicates a statistically significant difference between the two methods; , c Repeatability Standard Deviation, d Among-Laboratory Standard Deviation, e Reproducibility Standard Deviation, f SE
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