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Table 1 Search filter performance measures

From: Integrated Care Search: development and validation of a PubMed search filter for retrieving the integrated care research evidence

Search results

Relevant citations

Irrelevant citations

Citations retrieved by search

a

b

Citations not retrieved by search

c

d

Formulae

 Sensitivity (recall) = a/(a + c)

 Specificity = d/(b + d)

 Precision = a/(a + b)

 Accuracy = (a + d)/(a + b + c + d)

 Number Needed to Read = 1/Precision

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BMC Medical Research Methodology

ISSN: 1471-2288

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