Using the Rank Equity Index to measure emergency medicine faculty rank progression.

REI analysis demonstrates EM women faculty and faculty of color are not achieving rank parity and are disadvantaged at the first tier of promotion. A preliminary longitudinal trend analysis suggests little progress. Asian women and Black men experience the most rank inequity. REI analysis identifies a need for focused faculty development to enhance our most vulnerable faculty's rank progression, suggesting that targeted recruitment and retention efforts of women faculty of all races/ethnicities and faculty of color, in particular, will improve diversity at every tier of faculty rank.