Fig. 3From: Area of the pressure-strain loop during ejection as non-invasive index of left ventricular performance: a population studyThe Ejection Work Density (EWD) in Relation to Hypertension (Panel a) and Obesity (Panel b). Boxplots present the adjusted mean EWD and 5–95% and 25–75% confidence limits. Adjustments in EWD accounted for the variance explained by age, sex (except in B) and heart rate. HT indicates hypertension; LV, left ventricular; NT, normotensiveBack to article page