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Revised Mar 2014

31

Table 2013.2A (cont’d)

: Comparative Results for the Detection of

Salmonella

spp. in Raw Ground Beef (25 g) by the 3M MDA

Salmonella

Method vs.

1

USDA/MLG-FSIS in an Inter-laboratory Study (High Level Inoculum)

2

Statistic

MPN/

Test Portion Laboratory

Candidate presumptive

(CP)

Candidate confirmed

(CC)

Candidate result (C)

Reference method

(R)

C vs. R

N

X

POD(CP)

N

X

POD(CC)

N

X

POD(C) N

X POD(R) dLPOD

(C,R)

dLPOD

(CP,CC)

1

12

12

1.00

12

12

1.00

12

12

1.00

12

12

1.00

0.00

0.00

2

12

12

1.00

12

12

1.00

12

12

1.00

12

12

1.00

0.00

0.00

3

b

NA

i

NA

NA

NA NA

NA

NA NA

NA

NA NA

NA

NA

NA

4

b

NA NA

NA

NA NA

NA

NA NA

NA

NA NA

NA

NA

NA

5

b

NA NA

NA

NA NA

NA

NA NA

NA

NA NA

NA

NA

NA

6

b

NA NA

NA

NA NA

NA

NA NA

NA

NA NA

NA

NA

NA

7

b

NA NA

NA

NA NA

NA

NA NA

NA

NA NA

NA

NA

NA

8

b

NA NA

NA

NA NA

NA

NA NA

NA

NA NA

NA

NA

NA

9

12

12

1.00

12

12

1.00

12

12

1.00

12

12

1.00

0.00

0.00

10

12

12

1.00

12

12

1.00

12

12

1.00

12

12

1.00

0.00

0.00

11

12

12

1.00

12

12

1.00

12

12

1.00

12

12

1.00

0.00

0.00

12

a

12

12

1.00

12

12

1.00

12

12

1.00

12

12

1.00

0.00

0.00

13

12

12

1.00

12

12

1.00

12

12

1.00

12

11

0.92

0.08

0.00

14

12

12

1.00

12

12

1.00

12

12

1.00

12

12

1.00

0.00

0.00

15

12

12

1.00

12

12

1.00

12

12

1.00

12

12

1.00

0.00

0.00

16

a

12

12

1.00

12

12

1.00

12

12

1.00

12

12

1.00

0.00

0.00

17

12

12

1.00

12

12

1.00

12

12

1.00

12

12

1.00

0.00

0.00

18

a

12

12

1.00

12

12

1.00

12

12

1.00

12

12

1.00

0.00

0.00

19

a

12

12

1.00

12

12

1.00

12

12

1.00

12

12

1.00

0.00

0.00

20

12

12

1.00

12

12

1.00

12

12

1.00

12

12

1.00

0.00

0.00

Estimate

All

120 120

1.00

120 120

1.00

120 120

1.00

120 119

0.99

0.01

0.00