Quartile (Q1-Q4)

In journal rankings, quartiles divide all journals in a subject category into four equal groups based on their impact factor or SJR score. Q1 contains the top 25% of journals (highest impact), Q2 the next 25%, Q3 the third quarter, and Q4 the bottom 25%. A journal can be Q1 in one subject category and Q2 in another. JournalsHub displays quartile rankings on the journal detail page and the dedicated rankings page.