From: Novel citation-based search method for scientific literature: a validation study
 |  | Co-citation search | Co-citation + citation searches | ||
---|---|---|---|---|---|
Total | Number retrieved | Percentage* | Number retrieved | Percentage* | |
Overall | 4261 | 1938 | 45.5 | 2674 | 62.8 |
Times cited | |||||
 Not indexed | 591 | 157 | 26.6 | 181 | 30.6 |
 0 | 365 | 1 | 0.3 | 176 | 48.2 |
 1–5 | 787 | 104 | 13.2 | 385 | 48.9 |
 6–9 | 411 | 150 | 36.5 | 237 | 57.7 |
 10–19 | 658 | 406 | 61.7 | 480 | 72.9 |
 20–49 | 862 | 616 | 71.5 | 691 | 80.2 |
  > 50 | 587 | 504 | 85.9 | 524 | 89.3 |
Indexed in WOS** | |||||
 No | 703 | 184 | 26.2 | 235 | 33.4 |
 Yes | 3558 | 1754 | 49.3 | 2439 | 68.5 |
Number of references | |||||
 Not indexed | 591 | 157 | 26.6 | 181 | 30.6 |
  < 5 | 97 | 44 | 45.4 | 45 | 46.4 |
 5–9 | 108 | 65 | 60.2 | 75 | 69.4 |
  > =10 | 3465 | 1672 | 48.3 | 2373 | 68.5 |
Years since publication | |||||
 0–1 | 544 | 44 | 8.1 | 285 | 52.4 |
 1–2 | 487 | 118 | 24.2 | 243 | 49..9 |
 2–5 | 1081 | 402 | 37.2 | 606 | 56.1 |
 5–10 | 994 | 585 | 58.9 | 686 | 69.0 |
  > 10 | 1155 | 789 | 68.3 | 854 | 73.9 |