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Table 4 Systematic reviews that contributed most to the 'not retrieved articles’ in PubMed; performance of improved searches

From: The comparative recall of Google Scholar versus PubMed in identical searches for biomedical systematic reviews: a review of searches used in systematic reviews

 

Number of included references

Number of includes retrieved by

 

Authors’ search

Improved search

Javan

68

29

61

Hasani

78

51

67

Verhoeven

89

67

81

Navarese

17

5

5

Novak

30

19

26

Gupta

16

8

12

Hardefeldt

26

18

23

 

324

197 (61%)

275 (85%)