Table 6.

Performance without customized dictionary on gold standard corpus.

PHI Type	PHI sub-type	Count	# FNs	Per Category Recall	Per Category Precision
Name	Patient Name	54	1	0.981
	Patient Name Initial	2	2	0.00
	Relative/Proxy Name	175	5	0.971
	Clinician Name	593	24	0.973	0.731
Date	Date (not year)	482	26	0.946
	Year	46	11	0.761	0.712
Location		367	231	0.371	0.840
Phone		53	0	1.00	0.898
Age over 89		4	1	0.750	0.600
Undefined		3	2	0.333	N/A
Overall		1779	295	0.834	0.725

(FNs are false negatives and N/A indicates not applicable.)