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© 2012 AOAC INTERNATIONAL

M

ICROBIOLOGY

G

UIDELINES

AOAC O

FFICIAL

M

ETHODS

OF

A

NALYSIS

(2012)

Appendix J, p. 20

Table G1. (

continued

)

Candidate presumptive (CP)

Candidate confirmed (CC)

Candidate result (C)

Reference method (R)

C vs R CP vs CC

Statistic

Concn,

MPN/25 g Lab

N

x

POD(CP)

N

x

POD(CC)

N

x

POD(C)

N

x

POD

(R)

dLPOD

(C,R)

dLPOD

(CP,CC)

08

12

7

0.58

12

7

0.58

12

7

0.58

12

11 0.92 –0.33

0.00

09

12

8

0.67

12

8

0.67

12

8

0.67

12

9 0.75 –0.08

0.00

10

12

8

0.67

12

8

0.67

12

8

0.67

12

9 0.75 –0.08

0.00

Estimate 0.92

All

120

75

0.63

120

74

0.62

120

74

0.62

120

80 0.67 –0.05

0.01

LCL

0.73

0.53

0.53

0.53

0.58 –0.36

–0.37

UCL

0.72

0.71

0.71

0.76 –0.04

0.12

s

r

0.50

0.50

0.50

0.47

LCL

0.44

0.44

0.44

0.42

UCL

0.52

0.52

0.52

0.52

s

L

0.00

0.00

0.00

0.04

LCL

0.00

0.00

0.00

000

UCL

0.13

0.11

0.11

0.22

s

R

0.50

0.50

0.50

0.47

LCL

0.45

0.45

0.45

0.42

UCL

0.52

0.52

0.52

0.52

P

T

0.9634

0.9867

0.9867

0.3711

etc.