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Table 2 Sensitivity of each search strategy.

From: Optimizing search strategies to identify randomized controlled trials in MEDLINE

Search strategy Median (%) Interquartile range (%) Mean rank (Friedman test) Reviews with perfect sensitivity (%) Relevant items missed (across 94 reviews)
SS123 100.00 4.17 4.24 70.21 49
SS12 100.00 12.15 3.34 52 108
SScrossover 100.00 12.15 3.34 52 108
SSCROSS-OVERSTUDIES 100.00 12.15 3.34 52 108
SSvolunteer 100.00 12.15 3.34 52 108
SSversus 100.00 12.15 3.41 52 105
  1. χ2 = 131.667, p < .01