Table 9.

Precision and recall from the CRIS performance test

Types of PI	Frequency
Total Number of Notes scanned	500
Total number of PI instances	3603
Number of PIs correctly identified and masked	3573
Number of PIs that should have been masked	89*
Number of instances masked that should not have been masked	30
Precision	98.8%
Recall	97.6%

*See Table 10.