Table 2: Baseline Echocardiography and Progression Rate of
Aortic Stenosis. Continuous variables are expressed as median (IQR) and
categorical variables are expressed as N (%). Progression rate was
calculated by dividing the difference in mean gradient or peak velocity
between first and last echocardiograms by time elapsed between scans.
Patients were determined to be rapid progressors if annualized
progression of mean gradient was greater than the average of that for
the entire study cohort.
AS: aortic stenosis, AVA: aortic valve area