Methods for Evaluation of medical prediction Models, Tests And Biomarkers (MEMTAB) 2018 Symposium

Table 1 (abstract P40). Diagnostic accuracy of the PHQ-9 by reference standard

	Semi-structured Reference Standard N studies = 29 N participants = 6,725 N major depression = 924		Fully structured Reference Standard N studies = 14 N participants = 7,680 N major depression = 839		Difference across reference standards (Semi- Fully)
Cutoff	Sensitivity	Specificity	Sensitivity	Specificity	Sensitivity	Specificity
5	0.98	0.55	0.93	0.54	0.05	0.01
6	0.98	0.63	0.91	0.61	0.07	0.02
7	0.98	0.69	0.86	0.69	0.12	0.00
8	0.95	0.75	0.82	0.75	0.13	0.00
9	0.91	0.80	0.74	0.79	0.17	0.01
10	0.88	0.85	0.70	0.84	0.18	0.01
11	0.84	0.89	0.62	0.87	0.22	0.02
12	0.79	0.91	0.57	0.89	0.22	0.02
13	0.70	0.93	0.49	0.92	0.21	0.01
14	0.64	0.95	0.44	0.94	0.20	0.01
15	0.56	0.96	0.35	0.96	0.21	0.00

ISSN: 2397-7523