Table 3. Statistics related to the prospective signal detection performance of MEDLINE.

	AUC_OR	AUC_N	F@3	F@1	M+	M−
AUC_N, area under the receiver operating characteristic curve for number of articles used as a signal score; AUC_OR, area under the receiver operating characteristic curve for the corrected odds ratio signal score; F@1, F-score using a cutoff of 1 article; F@3, F-score using a cutoff of 3 articles; M+, number of positive test cases containing information in MEDLINE; M−, number of negative test cases containing information in MEDLINE.
narrow 2013	0.67	0.73	0.34	0.65	33	6
narrow 2012	0.66	0.71	0.34	0.63	31	6
narrow 2011	0.66	0.71	0.34	0.63	31	6
narrow 2010	0.66	0.70	0.34	0.61	30	6
narrow 2009	0.63	0.68	0.29	0.57	27	5
broad 2013	0.71	0.75	0.47	0.70	40	13
broad 2012	0.71	0.74	0.47	0.68	38	12
broad 2011	0.70	0.73	0.45	0.67	37	12
broad 2010	0.70	0.74	0.44	0.67	37	11
broad 2009	0.67	0.71	0.40	0.63	33	10