A comparative study of pre-trained language models for named entity recognition in clinical trial eligibility criteria from multiple corpora

Table 1 Basic information and statistics of entities in the three EC corpora for NER

Corpus	EliIE	Covance	Chia
Number of documents	230	470	1000
Source	Clinicaltrials.org	In-house by Covance	clinicaltrials.org
Disease Areas	Alzheimer’s disease only	All diseases	All diseases

ISSN: 1472-6947