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Table 1 Recall, precision and NNR for each strategy

From: Collating the knowledge base for core outcome set development: developing and appraising the search strategy for a systematic review

Database Number of records retrieved Number of included records Unique yield Recall (%) (nā€‰=ā€‰250) Precision (%) Number needed to read (NNR) Sensitivity Ɨ Precision
MEDLINE via OVID 19058 216 109 87 1.13 89 98.31
SCOPUS 14258 109 3 44 0.77 130 33.88
Cochrane Methodology Register 1082 9 0 4 0.83 121 3.32