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CMAJ
CMAJ - July 28, 1998JAMC - le 28 juillet 1998

CMAJ is Canada's most cited medical journal

CMAJ 1998;159:129

© 1998 Canadian Medical Association

CMAJ's impact ranking is continuing to rise, according to the Institute for Scientific Information's (ISI) Journal Citation Reports. In 1996, the most recent year for which data are available, CMAJ ranked 19th among 98 medical and general and internal medicine journals. In 1995 it placed 25th among 106 journals. The latest rankings mean CMAJ continues its role as Canada's most cited medical journal.

The impact factor is a measure of the frequency with which the average journal article has been cited in a particular year. It is based on the ISI database of 16 000 journals, books and proceedings, but is only one possible measurement of success for a journal.

It has been criticized because of the proliferation of self-citation, citation of work quoted in survey articles and the lack of citation of primary sources, which are often published in languages other than English. However, the data are considered a useful longitudinal tool and they do indicate that CMAJ has maintained its ranking among major journals. It now places in the top 10 among general medical journals.

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