207 / 453
CONFIDENTIAL INFORMATION
Page 9 of 13
Table 4. Quantities and Percentages of True Positive, True Negatives, False
Positives, and False Negatives for the Candidate Method Testing of Ground
Beef, 18hr Enrichment
1. TRUE POSITIVE, ““Screening Stage”” Positive Result
-
”Confirmation Stage” Positive Result; TRUE NEGATIVE,
“Screening Stage” Negative Result
-
”Confirmation Stage” Negative Result; FALSE POSITIVE, “Screening Stage” Positive
Result-
”Confirmation Stage” Negative Result; FALSE NEGATIVE, “Screening Stage” Negative Result
-
”Confirmation
Stage” Positive Result
Inoculation Level
Final Result
1
Total
Percentage (%)
True Positive
5
100
True Negative
0
0
False Negative
0
0
False Positive
0
0
True Positive
9
45
True Negative
11
55
False Negative
0
0
False Positive
0
0
True Positive
0
0
True Negative
5
100
False Negative
0
0
False Positive
0
0
High
Low
Un-inoculated