Influential variables in the Journal Impact Factor of Dentistry journals

Abstract

The aim of this contribution is to determine what variables influence the position, by quartiles of the impact factor, as a quality indicator of a journal in the field of Dentistry. Methods: To this end, 24 journals included in Journal Citation Reports, 6 pertaining to each quartile were selected by a stratified sampling and then an ordinal regression model was estimated stepwise considering the journal impact factor quartile as response variable. Results: The estimation procedure concluded that the average number of papers published yearly by a journal and the percentage of systematic reviews are the most significant variables to be considered, along with the factor representing the journal's degree of adherence to recommendations by the International Committee of Medical Journal Editors. Conclusions/Clinical significance: Systematic reviews have significant effect on the Journal Impact Factor position of a journal as well as adherence to ICMJE recommendations, while papers publishing clinical trials bear no influence on this factor. Greater yearly average of published papers in a journal means a higher impact factor.

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“…Although journal impact factors can be manipulated, the ideal is to increase journal impact factors through ethical means by excluding manipulation. Previous studies have reported many recommendations to improve the journal impact factor 18–20 . These recommendations, valid for all journals, may allow the Journal of Craniofacial Surgery journal to increase its impact factor in the long run.…”

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