Table 3.

Proportion of SRs included in individual databases and their combination with MEDLINE and reference checking

Database	single database % [95% CI]	database + references % [95% CI]	MEDLINE + one database + references; % [95% CI]
MEDLINE	89.7% [89.0 to 90.3%]	93.7% [93.2 to 94.2%]
CINAHL	44.7% [43.7 to 45.7%]		94.6% [94.1 to 94.2%]
Embase	83.7% [82.9 to 84.5%]		94.8% [94.4 to 95.3%]
Epistemonikos	85.6% [84.7 to 86.5%]		99.2% [99.0 to 99.3%]
PsycINFO	24.5% [23.1 to 26.0%]		95.1% [94.7 to 95.5%]
TRIP	52.6% [51.0 to 54.1%]		96.3% [95.9 to 96.7%]

Best results in italics