Integrative approach to quality assessment of medical journals using impact factor, eigenfactor, and article influence scores.

In general, as the number of citable items decreased, the IF of the journals increased, though this relationship did not reach statistical significance (p = 0.132) largely due to the extreme effects of the New England Journal of Medicine , whose IF score increased by 21 in the absence of any significant changes in the number of citable items over the 8 years of the study.

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