4. AOACRIMicroMethods-2018Awards

B ird et al .: J ournal of aoaC i nternational V ol . 99, n o . 4, 2016 985

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Table 2016.01C. Comparative results for the detection of Salmonella at three inoculum levels in raw ground beef (73% lean) by the 3M MDA 2 – Salmonella method versus USDA/FSIS MLG reference method in a collaborative study

Candidate presumptive

Candidate confirmed

Candidate result

Reference method

Candidate versus reference

Matrix and inoculation level Laboratory

Statistic

POD CC

POD C

POD R

dLPOD C

dLPOD CP

N X POD CP

N X

N X

N X

Raw ground beef (73% lean), uninoculated control

1 2 3 4

12 0 0.00 12 12 0 0.00 12 12 2 0.17 12 12 2 0.17 NA a

0 0 2 0

0.00 12 0 0.00 12 0 0.00 0.00 0.00 0.00 12 0 0.00 12 0 0.00 0.00 0.00 0.17 12 2 0.17 12 1 0.08 0.09 0.00 0.00 NA 0 0.00 12 0 0.00 0.00 0.17

5 b NA NA NA NA NA NA NA NA NA NA NA NA NA NA 6 12 0 0.00 12 0 0.00 12 0 0.00 12 0 0.00 0.00 0.00 7 c NA NA NA NA NA NA NA NA NA NA NA NA NA NA 8 12 0 0.00 12 0 0.00 12 0 0.00 12 0 0.00 0.00 0.00 9 12 0 0.00 12 0 0.00 12 0 0.00 12 0 0.00 0.00 0.00 10 c NA NA NA NA NA NA NA NA NA NA NA NA NA NA 11 12 0 0.00 12 0 0.00 12 0 0.00 12 0 0.00 0.00 0.00 12 12 0 0.00 12 0 0.00 12 0 0.00 12 1 0.08 −0.08 0.00 13 12 0 0.00 12 0 0.00 12 0 0.00 12 0 0.00 0.00 0.00 14 12 0 0.00 12 0 0.00 12 0 0.00 12 0 0.00 0.00 0.00 15 12 0 0.00 12 0 0.00 12 0 0.00 12 0 0.00 0.00 0.00 16 12 0 0.00 12 1 0.08 12 0 0.00 12 0 0.00 0.00 −0.08

Estimate

All

156 4 0.03 156 3

0.02 156 2 0.01 156 2 0.01 0.00 0.01

LCL d UCL e

0.01 0.06 0.15 0.14 0.17 0.04 0.00 0.09 0.16 0.14 0.19

0.01 0.06 0.14 0.12 0.15 0.03 0.00 0.07 0.14 0.12 0.15

0.00 0.05 0.11 0.10 0.15 0.03 0.01 0.07 0.11 0.10 0.13

0.00 −0.03 −0.03 0.05 0.03 0.05

0.11 0.10 0.15 0.00 0.00 0.04 0.11 0.10 0.13

s r

LCL UCL

s L

LCL UCL

s R

UCL LCL

0.0315

0.0877

0.0184

0.5167

P T

Raw ground beef (73% lean), low inoculum level

1 2

12 6 0.50 12 12 5 0.42 12

6 5

0.50 12 6 0.50 12 7 0.58 −0.08 0.00 0.42 12 5 0.42 12 4 0.33 0.09 0.00

3 12 9 0.75 12 10 0.83 12 9 0.75 12 7 0.58 0.17 −0.08 4 12 5 0.42 NA 4 0.33 NA 4 0.33 12 3 0.25 0.08 0.08 5 b NA NA NA NA NA NA NA NA NA NA NA NA NA NA 6 12 6 0.50 12 6 0.50 12 6 0.50 12 7 0.58 −0.08 0.00 7 c NA NA NA NA NA NA NA NA NA NA NA NA NA NA 8 12 9 0.75 12 9 0.75 12 9 0.75 12 8 0.66 0.09 0.00 9 12 4 0.33 12 4 0.33 12 4 0.33 12 5 0.42 −0.08 0.00 10 c NA NA NA NA NA NA NA NA NA NA NA NA NA NA 11 12 6 0.50 12 6 0.50 12 6 0.50 12 3 0.25 0.25 0.00 12 12 8 0.66 12 8 0.66 12 8 0.66 12 7 0.58 0.08 0.00 13 12 8 0.66 12 8 0.66 12 8 0.66 12 8 0.66 0.00 0.00 14 12 3 0.25 12 3 0.25 12 3 0.25 12 6 0.50 −0.25 0.00 15 12 5 0.42 12 5 0.42 12 5 0.42 12 4 0.33 0.09 0.00 16 12 9 0.75 12 9 0.75 12 9 0.75 12 8 0.33 0.09 0.00

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