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Table 9 Precision and recall from the CRIS performance test

From: Development and evaluation of a de-identification procedure for a case register sourced from mental health electronic records

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%
  1. *See Table 10.