Table 1.
Journal Rankings Based On Their 2008 Eigenfactor, Impact Factor and the Article Influence Score.
Figure 1.
The Relationship Between Impact Factor (IF) and Eigenvalue Score (ES) In 2008.
The area of the circles is proportional to the number of citable items published in 2008. The area of the dotted line is expanded in figure 1B. R2 = 0.5721; p<0.0001.
Figure 2.
The Relationship of Changes in Citable Items Between 2001 and 2008 to Changes in Eigenfactor Score and Impact Factor Between 2001 and 2008.
R2 = 0.1957; p = 0.0099 for the relationship between changes in citable items and changes in Eigenfactor score and R2 = 0.1216; p = 0.0505* for the relationship between changes in citable items and changes in the impact factor. *The New England Journal of Medicine was excluded from the regression analysis, as it was an extreme outlier.
Table 2.
Temporal Trends in the Impact Factor of Common Medical Journals Between 2001 and 2008.
Table 3.
Temporal Trends in Eigenfactor Score of Common Medical Journals Between 2001 and 2008.
Table 4.
Temporal Trends in Citable Items of Common Medical Journals Between 2001 and 2008.
Table 5.
Temporal Trends in Article Influence Scores of Common Medical Journals Between 2001 and 2008.