Integrative Approach to Quality Assessment of Medical Journals Using Impact Factor, Eigenfactor, and Article Influence Scores
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.