Microbiology-PTM-OMA_Modules_1-5

Data Table – Qualitative Method SLV

Table 2. Comparison of candidate and reference method results

Confirmed Candidate

Reference

MPN b / test portion N a

Matrix

Strain

Instrument

dPOD C f

95% CI g

POD C d (95% CI g ) 0.00 (0.00, 0.43) 0.00 (0.00, 0.43) 0.80 (0.58, 0.92) 0.80 (0.58, 0.92) 1.00 (0.57, 1.00) 1.00 (0.57, 1.00)

POD R e (95% CI g ) 0.00 (0.00, 0.43) 0.00 (0.00, 0.43) 0.70 (0.48, 0.85) 0.70 (0.48, 0.85) 1.00 (0.57, 1.00) 1.00 (0.57, 1.00)

X c

X c

A

0

0

0.00 (‐0.43, 0.43)

N/A

5

B

0

0

0.00 (‐0.43, 0.43)

Smoked  Salmon (7.0 x 10 5 CFU/g)

A

16

14

0.10 (‐0.17, 0.35)

L.  monocytogenes  ATCC 15313

0.91 (0.64, 1.76)

20

B

16

14

0.10 (‐0.17, 0.35)

A

5

5

0.00 (‐0.43, 0.43)

7.34 (3.65, 16.76)

5

B 0.00 (‐0.43, 0.43) a N = Number of test potions. b MPN = Most Probable Number with 95% confidence interval.  c x = Number of positive test portions.  d POD C =  Probability of Detection for the confirmed candidate results .  e POD R = probability of detection for the reference method results .  f dPOD C = POD C  minus POD R .  g 95% Confidence Interval.  h N/A not applicable.  5 5