. Author manuscript; available in PMC: 2018 Nov 1.

Published in final edited form as: J Biomed Inform. 2017 Jun 7;75 Suppl:S19–S27. doi: 10.1016/j.jbi.2017.06.006

Table 5.

The performance of i2b2 main PHI categories (micro-averaged on 2016 test set, at strict entity level). Number of training instances for each main category is also shown.

PHI category	Precision	Recall	F₁-measure	# training instances (%)
CONTACT	93.5	91.27	92.37	154 (0.74)
NAME	94.48	92.47	93.46	3,691 (17.71)
DATE	97.04	95.32	96.17	5,723 (27.46)
AGE	96.0	93.88	94.93	3,637 (17.45)
PROFESSION	86.44	64.36	73.78	1,471 (7.06)
ID	95.24	60.61	74.07	44 (0.21)
LOCATION	88.47	81.36	84.76	7,213 (34.60)