AOAC-RI ERP Book MICRO.pdf

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CONFIDENTIAL INFORMATION
Page 13 of 17
Table 8. Quantities and Percentages of True Positive, True Negatives, False
Positives, and False Negatives for the Candidate Method Testing of Sprouts
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 Result1 Total Percentage (%)
True Positive 4 80
True Negative 1 20
False Negative 0 0
False Positive 0 0
True Positive 10 50
True Negative 10 50
False Negative 0 0
False Positive 0 0
True Positive 0 0
True Negative 5 100
False Negative 0 0
False Positive 0 0
Un-inoculated
High
Low