Statistics Meeting Book (May 15, 2019)

ANNEX D Summary Data Table for Qualitative Method Single Laboratory Studies

Table D1. Comparative results for the detection of Listeria innocua in raw shrimp

Concentration

Candidate presumptive (CP)

Candidate confirmed (CC)

Candidate method (C)

Reference method (R)

C vs R CP vs CC

Statistic

MPN/25 g

N

x POD(CP)

N

x POD(CC)

N

x POD(C)

N

x POD(R)

dPOD(C,R) dPOD(CP,CC)

Estimate

0.00

20

0

0.00

20

0

0.00

20

0 0.00

20

0 0.00

0.00

0.00

LCL

0.00

0.00

0.00

0.00

0.00

–0.16

–0.16

UCL

1.50

0.16

0.16

0.16

0.16

0.16

0.16

Estimate

0.80

20

12 0.60

20

10

0.50

20

10 0.50

20

11 0.55

–0.05

0.10

LCL

0.43

0.39

0.30

0.30

0.34

–0.33

–0.19

UCL

1.39

0.78

0.70

0.70

0.74

0.24

0.37

Estimate

3.00

20

20 1.00

20

20

1.00

20

20 1.00

20

19 0.95

0.05

0.00

LCL

1.58

0.84

0.84

0.84

0.76

–0.12

–0.16

UCL

5.68

1.00

1.00

1.00

1.00

0.24

0.16

Estimate

17.00

20

20 1.00

20

20

1.00

20

20 1.00

20

20 1.00

0.00

0.00

LCL

0.27

0.84

0.84

0.84

0.84

–0.16

–0.16

UCL

1060

1.00

1.00

1.00

1.00

0.16

0.16

ANNEX E Example of Graph of POD Values from Qualitative Method Single Laboratory Data Figure XXX

Notes : ( 1 ) The concentration plotted should be MPN/test portion. ( 2 ) Confidence intervals may also be plotted. ( 3 ) Collaborative data should be plotted analogously.