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Table 1 Performance of search terms and filters designed for retrieving systematic reviews in MEDLINE

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 (85.0, 93.3)

98.9 (98.9, 98.9)

1.4 (1.3, 1.5)

71.4 (68.7, 75.5)

Montori, et. al (2005)

Sensitive query

99.0 (96.5, 99.7)

62.0 (62.0, 62.0)

0 (0, 0)

2191.2 (2166.3, 2284.3)

‘Balanced query’ (sensitivity > specificity)

99.0 (96.5, 99.7)

87.6 (87.6, 87.6)

0.1 (0.1, 0.1)

712.4 (706.7, 733.4)

Balanced query (specificity > sensitivity)

87.9 (82.8, 91.7)

98.5 (98.5, 98.5)

1.1 (1.0, 1.1)

94.9 (90.9, 100.9)

Specific query

81.6 (75.8, 86.3)

99.3 (99.3, 99.3)

2.0 (1.9, 2.3)

49.4 (46.7, 53.2)

Shojania and Bero (2001)

85.5 (80.1, 89.7)

99.1 (99.1, 99.1)

1.7 (1.6, 1.8)

57.8 (55.1, 61.8)

Hunt and McKibbon (1997)4 terms

69.6 (63.0, 75.4)

99.4 (99.4, 99.4)

1.9 (1.7, 2.0)

53.9 (49.7, 59.6)

Hunt and McKibbon (1997)8 terms

85.5 (80.1, 89.7)

99.2 (99.2, 99.2)

1.9 (1.8, 2.0)

53.4 (50.9, 57.0)

Boynton, et. al (1998)

Sensitivity maximiser

99.5 (97.3, 99.9)

75.6 (75.6, 75.6)

0.1 (0.1, 0.1)

1395.1 (1387.7, 1437.2)

Precision query (> 70%)

47.8 (41.2, 54.6)

99.6 (99.6, 99.6)

2.1 (1.8, 2.5)

46.7 (40.9, 54.4)

BMJ Clinical Evidence

88.9 (83.9, 92.5)

99.0 (99.0, 99.0)

1.6 (1.5, 1.7)

61.7 (59.3, 65.5)

Centre for Reviews and Dissemination

For inclusion in DARE

92.8 (88.4, 95.6)

95.7 (95.7, 95.7)

0.4 (0.4, 0.4)

262.2 (254.2, 275.8)

Strategy 1

99.0 (96.5, 99.7)

71.2 (71.2, 71.2)

0.1 (0.1, 0.1)

1693.1 (1659.8, 1773.3)

Strategy 2.1

99.5 (97.3, 99.9)

87.4 (87.4, 87.4)

0.1 (0.1, 0.1)

717.5 (714.2, 736.1)

Strategy 2.2

99.0 (96.5, 99.7)

88.9 (88.9, 88.9)

0.2 (0.2, 0.2)

636.0 (631.0, 654.5)

Scottish Intercollegiate Guidelines Network Filter

87.0 (81.7, 90.9)

99.2 (99.2, 99.2)

1.9 (1.8, 2.0)

52.0 (49.7, 55.4)

  1. Values are in percentages (95% confidence intervals).
  2. * Validation data set (n = 207).
  3. ** Validation data set (n = 1174817).
  4. Abbreviation: SR – systematic review.