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Table 5 Retrieval performance of search strategies in SUMSearch and Google Scholar

From: Developing search strategies for clinical practice guidelines in SUMSearch and Google Scholar and assessing their retrieval performance

Search strategy Sensitivity (%) Specificity (%) NNR
SUMSearch    
Guideline* 81.51 (74.53 to 88.49) 74.29 (72.64 to 75.94) 8.18 (6.90 to 10.05)
Recommendation* 60.50 (51.72 to 69.28) 76.28 (74.67 to 77.89) 9.93 (8.14 to 12.72)
Practice guideline* 40.34 (31.52 to 49.16) 89.45 (88.29 to 90.61) 6.96 (5.52 to 9.43)
Google Scholar    
Guideline/s 31.93 (23.56 to 40.30) 78.05 (76.50 to 79.60) 16.67 (12.76 to 24.04)
Recommendation/s 8.40 (3.42 to 13.38) 92.11 (91.09 to 93.13) 22.42 (13.97 to 56.82)
Practice guideline/s 11.76 (5.98 to 17.54) 95.72 (94.96 to 96.48) 9.29 (6.21 to 18.38)
  1. 95% confidence intervals in brackets.
  2. NNR = number needed to read.
  3. * = truncation.