Autonomous cortisol secretion in patients with adrenal incidentalomas is associated with increased mortality, but detailed information about the risk associated with specific levels of autonomous cortisol secretion is not available. Objective:To measure the association between mortality and levels of autonomous cortisol secretion in patients with adrenal incidentalomas. Design:Retrospective cohort study. (ClinicalTrials.gov: NCT03919734) Setting:Two hospitals in …