Table 7.

Sensitivity and specificity for each search tool by database

Search tool and database	Sensitivity (% relevant texts identified out of all relevant hits)	Specificity (% relevant texts identified out of all hits)
CINAHL PICO	14/18 = 77.78	14/1350 = 1.04
CINAHL PICO S	12/18 = 66.67	12/146 = 8.22
CINAHL SPIDER	12/18 = 66.67	12/146 = 8.22
MEDLINE PICO	12/18 66.67	12/8158 = 0.15
MEDLINE PICO S	6/18 = 33.33	6/113 = 5.32
MEDLINE SPIDER	5/18 = 27.78	5/14 = 35.71
EMBASE PICO	13/18 = 72.22	14/14250 = 0.1
EMBASE PICO S	7/18 = 38.88	7/189 = 3.7
EMBASE SPIDER	3/18 = 16.67	3/55 = 5.45