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Since Lawrence in 2001 proposed the open access (OA) citation advantage, thepotential benefit of OA in relation to the citation impact has been discussedin depth. The methodology to test this postulate ranges from comparing theimpact factors of OA journals versus traditional ones, to comparing citationsof OA versus non-OA articles published in the same non-OA journals. However,conclusions are not entirely consistent among fields, and two possibleexplications have been suggested in those fields where a citation advantage hasbeen observed for OA: the early view and the selection bias postulates. In thisstudy, a longitudinal and multidisciplinary analysis of the gold OA citationadvantage is developed. All research articles in all journals for all subjectcategories in the multidisciplinary database Web of Science are considered. Atotal of 1,137,634 articles - 86,712 OA articles (7.6%) and 1,050,922 non-OAarticles (92.4%)- published in 2009 are analysed. The citation windowconsidered goes from 2009 to 2014, and data are aggregated for the 249disciplines (subject categories). At journal level, we also study the evolutionof journal impact factors for OA and non-OA journals in those disciplines whoseOA prevalence is higher (top 36 subject categories). As the main conclusion,there is no generalizable gold OA citation advantage, neither at article nor atjournal level.

Reconsidering the gold open access citation advantage postulate in a  multidisciplinary context: an analysis of the subject categories in the Web  of Science database 2009-2014