“2-yr mean citedness” is the OpenAlex field summary_stats.2yr_mean_citedness (CC0): mean citations per paper over a two-year window. It is a raw bibliometric field, not a journal rating, and is not used for default ranking.
Medicine1,222Biochemistry, Genetics and Molecular Biology256Social Sciences219Psychology194Environmental Science193Medicine: Internal medicine: Special situations and conditions: Industrial medicine. Industrial hygiene1Medicine: Public aspects of medicine1