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Table 3 Performance of search terms and filters designed for retrieving systematic reviews in CINAHL

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 89.9 (93.5, 94.0) 97.6 (97.6, 97.6) 1.8 (1.6, 1.8) 57.2 (54.7, 61.7)
Wong, et. al (2006)
Best sensitivity query 96.1 (91.2, 98.3) 94.6 (94.6, 94.6) 0.8 (0.8, 0.8) 120.8 (118, 127.7)
‘Small drop in sp, substantive gain in sensitivity’ query 45 (36.7, 53.6) 95.3 (95.3, 95.3) 0.5 (0.4, 0.5) 235.3 (193.9, 296.4)
Best optimization (sensitivity > specificity) query 50.4 (42, 58.8) 99.4 (99.4, 99.4) 3.8 (3.2, 4.5) 26.3 (22.5, 31.6)
Best specificity query 47.3 (38.9, 55.8) 99.4 (99.4, 99.4) 3.5 (2.8, 4.1) 29.1 (24.7, 35.5)
Centre for Reviews and Dissemination Filter 98.4 (94.5, 99.6) 94.0 (94.0, 94.0) 0.8 (0.7, 0.8) 130.4 (128.9, 136.2)
McKibbon (1998) 78.3 (70.5, 84.5) 98.9 (98.9, 98.9) 3.2 (2.9, 3.4) 31.7 (29.3, 35.2)
  1. Values are in percentages (95% confidence intervals).
  2. * Validation data set (n = 129).
  3. ** Validation data set (n = 272264).
  4. Abbreviations: SR – systematic review.