Ranking of addiction journals in eight widely used impact metrics

Abstract

Background and aims: Journal metrics assess impact upon the research literature, and are now used to assess individual researchers in hiring and promotion decisions. This study compared the ranking of addiction journals according to eight widely used metrics; assessed the correlations between journal rankings; and assessed changes over time in metric scores. Methods: Data pertaining to the 2020 scores on eight metrics for 43 journals were obtained and the top 20 ranking in each compared and the correlations between rankings assessed. The Impact Factor was employed to assess changes over time. Results: Ignoring the two categorization systems used by some metrics, 31 journals appeared in at least one metric top 20 and 11 in all eight. The top rank in each was occupied by one of three journals. Three-quarters of the correlations between rankings were above 6.0. The number of journals with an Impact Factor rose from 23 in 1997 to 38 in 2020, and the journals added tended to focus on addictions other than alcohol and drugs or have a specific focus. Conclusions and discussion: The results indicate a concentration of journals at the top of the metrics and moderate to strong agreement between them, but almost three-quarters of journals appeared in at least one metric. The longitudinal data reflect both a broadening and specialization of the addiction field. The study limitations include exclusion of some journals and metrics.

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