Table 4

Descriptive statistics for citation counts



Oncology
CM physics


Google Scholar
Scopus
Web of Science
Google Scholar
Scopus
Web of Science



1993
Mean
20.8
35.4
45.3
10.3
N/A
22.5

St. Dev.
37.9
60.7
77.4
20.7
N/A
32.5








2003
Mean
6.2
8.9
8.3
2.2
2.2
3.9

St. Dev.
8.0
12.0
10.9
3.7
2.7
4.9

Bakkalbasi et al. Biomedical Digital Libraries 2006 3:7   doi:10.1186/1742-5581-3-7