"Citation bias and other determinants of citation in biomedical research: findings from six citation networks."
The aim of this study is to assess the determinants of citation and how these compare across six different biomedical research fields. Citation network analyses were performed for six biomedical research questions. After identifying all relevant publications, all potential citations were mapped together with the actually performed citations in each network. As determinants of citation we assessed the following: study outcome, study design, sample size, journal impact factor, gender, affiliation, authority and continent of the corresponding author, funding source, title of the publication, number of references, and self-citation.