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Table 2 Performance of search terms and filters designed for retrieving systematic reviews in EMBASE

From: An optimal search filter for retrieving systematic reviews and meta-analyses

Search filter Sensitivity* Specificity** Precision Number needed to read
health-evidence.ca
health-evidence.ca SR search filter 87.9 (80.3, 92.8) 98.2 (98.2, 98.2) 0.5 (0.5, 0.6) 186.0 (176.0, 208.9)
Wilcynski and Haynes (2007)
Sensitive query 96.3 (90.8, 98.5) 72.3 (72.3, 72.3) 0 (0, 0) 2709.5 (2622.5, 2945.2)
‘Small drop in specificity, substantive gain in sensitivity’ query 75.7 (66.7, 82.8) 99.3 (99.3, 99.3) 1.1 (1, 1.2) 88.2 (80.5, 100.1)
Best optimization query 96.3 (90.8, 98.5) 85.5 (85.5, 85.5) 0.1 (0.1, 0.1) 1403.4 (1363.4, 1502.0)
Specific query 63.4 (28.0, 45.9) 99.5 (99.5, 99.5) 0.9 (0.7, 1.1) 117.8 (93.4, 154.2)
BMJ Clinical Evidence filter 84.1 (76.0, 89.8) 98.5 (98.5, 98.5) 0.6 (0.5, 0.6) 167.9 (157.0, 186.1)
Centre for Reviews and Dissemination filter 66.4 (57.0, 74.6) 97.6 (97.6, 97.6) 0.3 (0.3, 0.3) 341.0 (302.0, 400.0)
Scottish Intercollegiate Guidelines Network filter 81.3 (72.9, 87.6) 99.0 (99.0, 99.0) 0.8 (0.8, 0.8) 118.6 (110.1, 132.5)
  1. Values are in percentages (95% confidence intervals).
  2. * Validation data set (n = 107).
  3. ** Validation data set (n = 990862).
  4. Abbreviations: SR – systematic review.