Fig. 2
From: The clinical use of stress echocardiography in ischemic heart disease
Kaplan-Meier survival curves (considering cardiac death as end point) in patients with pharmacologic stress echocardiography positive for ischemia stratified on the basis of the extent of ischemia, as expressed by delta wall motion score index (WMSI) set at 0.37 (left panel), and the dose to induce ischemia (left panel). From [47]