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

Table 1

Database productivity from 100 most recent non-PubMed records (before screening).

	N of journals indexed	Estimated N of non-PubMed journals indexed	N examined to get 100 non-PubMed records	Eligible per 100 (precision, %)	Timeframe for 100 non-PubMed records
Acudoc2 RCT	n/a	n/a	160	100	2003–2004
Acubriefs	32	20	337	56	2005+
AMED	508	230	1520	41	2004+
Hom-Inform	53	43	373	30	1998–2003
MANTIS	1541	565	1082	29	2004+
PsycINFO	2056	1147	1015	27	2004+
CINAHL	1827	855	1490	25	2005+
Global Health	5701	3362	1303	19	2004+
ICL	44	39	221	14	2004+
Alt HealthWatch^a	35	21	531	9	2004+
CAIRSS for Music	18	15	n/a	1	n/a
AGRICOLA	2241	1593	986	0	n/a
Datadiwan	n/a	n/a	n/a	0	n/a
Herb Research Foundation	n/a	n/a	n/a	0	n/a
IBIDS	5257	1208	n/a	0	n/a

N indicates number; n/a indicates information not available.
^aWe examined the peer-reviewed journals (PRJ subset) only.