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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.