Assessment of blinding
BANG
After completing each study, cardiologists were asked to predict the agent of initial interpretation. Cardiologists correctly predicted the method of initial assessment for 1,130 (32.3%) studies, incorrectly guessed for 845 (24.2%) studies and were unsure whether initial assessment was provided by AI or sonographers for 1,520 (43.4%) studies. The Bang’s blinding index, a metric of blinding in which 0 is perfect blinding and −1 or 1 is perfectly unblinding, was used to assess the trial