Original search strategy Implemented search strategy with maximized sensitivity filter Implemented search strategy with USDeN filter
Systematic review 1 (Articles included in the review and indexed in MEDLINE: n=12)
Articles retrieved in MEDLINE (n)
210
389
99
Included articles retrieved (n) 6 7 5
Sensitivity (%) 50.0% 58.3% 41.6%
Precision (%) 2.8% 1.7% 5.1%
NNR (n) 35 55 20
Systematic review 2 (Articles included in the review and indexed in MEDLINE: n=4)
Articles retrieved in MEDLINE (n)
1,119
454
55
Included articles retrieved (n) 1 1 1
Sensitivity (%) 25.0% 25.0% 25.0%
Precision (%) 0.1% 0.2% 1.8%
NNR (n) 1,119 454 55