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Table 1 Formulas for calculating sensitivity, 1-specificity, and precision.

From: Electronic search strategies to identify reports of cluster randomized trials in MEDLINE: low precision will improve with adherence to reporting standards

  Eligible articles Ineligible articles Total articles
Retrieved by search strategy a b a+b
Not retrieved by search strategy c d c+d
Total a+c b+d N
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BMC Medical Research Methodology

ISSN: 1471-2288

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