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Eugene Garfield, PhD
Institute for Scientific Information Philadelphia

JAMA. 1988;259(13):1946-1947.

	Since this article does not have an abstract, we have provided the first 150 words of the full text PDF and any section headings.

In Reply.

—In a recently published study of the world's 75 most "influential," that is, most-cited general and internal medical journals,¹ we provided data on short- and long-term impact based on 1982 data from the Journal Citation Reports volumes of the Science Citation Index. Impact is a measure of the number of citations to the average article published in a recent two-year period. In that respect, JAMA still ranks eighth among the same group of general and internal medical journals. Using another indicator of impact, we also measured the numbers of articles that had received 50 or more citations. This number is affected by the age and size of a journal as well as the journal's impact on researchers.

Thus, the safest statement we can make about journal impact scores is that they reflect a journal's influence on research workers. Indeed, a large percentage of citations to biomedical research . . . [Full Text PDF of this Article]

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