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Table 3 Percentage of retrieved articles by the number of citing articles and similarity index

From: Novel citation-based search method for scientific literature: a validation study

Number of citing articles Similarity index* Percentage of articles in PubMed Number Percentage retrieved, median
> 20 > 0.2 100 101 87.5 (68.0, 100.0)
> 100 > 0.2 100 70 90.8 (77.6, 100.0)
> 20 > 0.5 100 52 87.5 (77.4, 100.0)
> 100 > 0.5 100 32 91.9 (82.2, 100.0)
> 20 > 0.2 > 90 150 83.3 (64.1, 96.5)
> 100 > 0.2 > 90 111 85.7 (66.7, 96.7)
> 20 > 0.5 > 90 71 87.5 (69.2, 95.2)
> 100 > 0.5 > 90 47 87.5 (76.9, 95.2)
> 20 > 0.2 All 200 80.0 (60.0, 94.1)
> 100 > 0.2 All 139 81.2 (64.3, 95.2)
> 20 > 0.5 All 94 84.5 (61.5, 94.4)
> 100 > 0.5 All 59 86.8 (66.7, 94.4)
  1. *Similarity index = number of co-citations between query articles / number of citations of the less-cited query article. IQR inter-quartile range