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. Author manuscript; available in PMC: 2016 Dec 19.
Published in final edited form as: Proc Conf Empir Methods Nat Lang Process. 2016 Nov;2016:856–865. doi: 10.18653/v1/d16-1082

Table 1.

Annotation statistics for the corpus.

Labels Num. of
Instances		 Avg word length
± std
ADE 1807 1.68 ± 1.22
Indication 3724 2.20 ± 1.79
Other SSD 40984 2.12 ± 1.88
Severity 3628 1.27 ± 0.62
Drugname 17008 1.21 ± 0.60
Duration 926 2.01 ± 0.74
Dosage 5978 2.09 ± 0.82
Route 2862 1.20± 0.47
Frequency 5050 2.44 1.70