Table 2

Accuracy of low dose dobutamine echocardiography (LDDE) and ²⁰¹thallium SPECT in predicting functional recovery after revascularisation in patients with a non-occluded (group 1) and an occluded (group 2) left anterior descending coronary artery

		LDDE			²⁰¹Thallium SPECT
		Group 1	Group 2		Group 1	Group 2
Sensitivity	87% (55/63)	52% (36/69)2-165		80% (48/60)	72% (39/54)2-151
Specificity	68% (57/83)	74% (60/81)		21% (7/33)2-170	64% (23/36)2-165
Accuracy	77% (112/146)	64% (96/150)2-150		59% (55/93)2-164	69% (62/90)
PPV	68% (55/81)	63% (36/57)		65% (48/74)	75% (39/52)
NPV	88% (57/65)	65% (60/93)2-160		37% (7/19)2-170	61% (23/38)

↵2-150 p = 0.01;
↵2-160 p = 0.001;
↵2-165 p < 0.0001v group 1.
↵2-151 p < 0.05;
↵2-164 p < 0.01;
↵2-170 p < 0.0001v LDDE.
NPV, negative predictive value; PPV, positive predictive value; SPECT, single photon emission computed tomography.