Searching for Controlled Trials of Complementary and Alternative Medicine: A Comparison of 15 Databases

Table 3

Database overlap for 2005.

	Acubriefs	CINAHL	AMED	Global Health	PsycINFO	MANTIS	ICL	AHW
Acubriefs	1.00	0.03	0.06	0.00	0.00	0.00	0.00	0.00
CINAHL	0.08	1.00	0.11	0.02	0.02	0.08	0.03	0.00
AMED	0.36	0.28	1.00	0.04	0.04	0.20	0.08	0.00
Global Health	0.00	0.06	0.06	1.00	0.00	0.06	0.00	0.00
PsycINFO	0.00	0.06	0.06	0.00	1.00	0.06	0.00	0.00
MANTIS	0.00	0.50	0.50	0.10	0.10	1.00	0.30	0.00
ICL	0.00	0.50	0.50	0.00	0.00	0.75	1.00	0.00
AHW	0.00	0.00	0.00	0.00	0.00	0.00	0.00	1.00

This table shows the proportion of controlled CAM trials (after de-duplication against PubMed) from the database listed in the row that were also indexed in the database shown in the column.