The introduction of the 5-year impact factor: does it benefit statistics journals?

In this paper, we investigate the effects of the introduction of 5-year impact factors. We collect impact factor data for all disciplines available in the Journal Citation Reports. For all these categories, we give insights into the relationship between the traditional 2-year impact factor and the new 5-year impact factor. Our main focus is to investigate whether the traditionally low impact factors for statistics journals improve with this new measure. The results show that the statistics discipline indeed benefits from the 5-year window, that is, the impact factor increases. This appears to be true for most disciplines, although the statistics discipline ranks among the top 15 (out of 171) disciplines in this respect.