Skip to main content
. Author manuscript; available in PMC: 2017 Dec 1.
Published in final edited form as: J Biomed Inform. 2016 Oct 27;64:265–272. doi: 10.1016/j.jbi.2016.10.014

Table 5.

Fragment-level performance of various extraction methods.

Regex Matching Concept Mapping Supplement Dictionary Combined Method

R P F1 R P F1 R P F1 R P F1
SampleSize
/GroupSize
93.6 87.3 90.3 NA NA NA NA NA NA 93.6 87.3 90.3
Population NA NA NA 86.1 60.7 71.2 70.7 66.4 68.5 97 67.8 79.8
Study Arm NA NA NA 94.9 78.5 85.9 82.5 87.6 85 96.8 78.6 86.8
Outcome 14.0 19.7 16.4 56.4 41.9 48.1 82.4 79.5 80.9 93.5 72.6 81.8