Assimilated LVEF: A Bayesian technique combining human intuition with machine measurement for sharper estimates of left ventricular ejection fraction and stronger association with outcomes
  The cardiologist's main tool for measuring systolic heart failure is left
ventricular ejection fraction (LVEF). Trained cardiologist's report both a
visual and machine-guided measurement of LVEF, but only use this machine-guided
measurement in analysis. We use a Bayesian technique to combine visual and
machine-guided estimates from the PARTNER-IIA Trial, a cohort of patients with
aortic stenosis at moderate risk treated with bioprosthetic aortic valves, and
find our combined estimate reduces measurement errors and improves the
association between LVEF and a 1-year composite endpoint.
