ExaCT: automatic extraction of clinical trial characteristics from journal publications

Table 2 Sentence level performance of ExaCT

Information element	at least one relevant answer per article				all answers
	# of articles with expert's answers	system's suggestion		top5 recall	# of sentences with expert's answers	top5 sentence recall
		precision	recall
Eligibility criteria	50	0.78	0.78	0.98	133	0.77
Sample size	50	0.77	0.68	0.84	52	0.83
Start date of enrolment	37	0.97	0.86	0.86	37	0.86
End date of enrolment	37	0.91	0.81	0.89	37	0.89
Name of experimental treatment	50	0.86	0.86	0.98	56	0.95
Name of control treatment	50	0.86	0.86	1.00	54	0.96
Dose	49	0.81	0.78	0.98	72	0.90
Frequency of treatment	41	0.80	0.78	1.00	55	0.95
Route of treatment	37	0.86	0.81	0.95	39	0.95
Duration of treatment	41	0.74	0.76	0.93	44	0.91
Primary outcome name	48	0.66	0.69	0.88	52	0.81
Primary outcome time point	31	0.53	0.61	0.81	33	0.76
Secondary outcome name	43	0.69	0.79	0.98	49	0.88
Secondary outcome time point	26	0.69	0.69	0.88	29	0.83
Funding organization name	40	0.47	0.50	0.72	42	0.74
Funding number	5	0.31	0.80	0.80	5	0.80
Early stopping	2	0.33	1.00	1.00	2	1.00
Registration identifier of trial	31	1.00	0.94	0.94	31	0.94
Author name	50	0.98	0.98	0.98	50	0.98
Date of publication	50	0.98	0.98	0.98	50	0.98
DOI	48	1.00	0.98	0.98	48	0.98
Micro-average	816	0.80	0.80	0.93	970	0.88
Macro-average		0.76	0.81	0.92		0.89

ISSN: 1472-6947