Table 2.

Article and interaction statistics

Data	Drug–disease corpus	Drug–phenotype corpus	Total
No. articles reviewed	78 263	10 366	88 629
No. articles curateda	51 884	9 646	61 530
No. articles rejected	26 379	720	27 099
No. total interactions	183 849	70 324	254 173
No. chemical–disease interactions	145 366	6 807	152 173
No. chemical–gene interactions	32 539	26 033	58 572
No. gene–disease interactions	4 603	742	5 345
No. phenotype interactions	1 341b	36 742	38 083
Average no. interactions per curated article	3.5	7.3	n/a
Average no. chemicals per curated article	1.7	2.3	n/a
Average no. diseases per curated article	2.0	0.5	n/a
Average no. genes per curated article	0.5	1.9	n/a
Average no. phenotypes per curated article	<0.0b	1.6	n/a
Average no. anatomy terms per curated article	<0.0b	1.7	n/a
Average no. taxa per curated article	1.0	1.0	n/a

^aabstract curation whenever possible; full text was examined if necessary to resolve issues.

^bcurated from 401 drug–disease articles during transitional period to drug–phenotype phase.

n/a, not applicable.