B – Retraction index

Fang FC, Casadevall A, Morrison RP. Retracted science and the retraction index. Infection and Immunity 2011;79(10):3855-3859
(doi: 10.1128/IAI.05661-11)

To determine whether journals differ in frequency of retracted articles and whether there is a relationship between retraction frequency and journal impact factor, the authors carried out a PubMed search among 17 journals. Using a novel measure, the “Retraction Index”, they found that the frequency of retraction varies among journals and that it shows a strong correlation with the journal impact factor.