Table 2

Diagnostic accuracy of low dose and full protocol dobutamine echocardiography in predicting recovery of segmental resting function six months after revascularisation in patients taking β blockers

Sensitivity (%)Specificity (%)PPV (%)NPV (%)Accuracy (%)
CI, confidence interval; NPV, negative predictive value PPV, positive predictive value.
Low dose47 (34/72)81 (70/86)68 (34/50)65 (70/108)66 (104/158)
95% CI35 to 5973 to 8955 to 8155 to 7559 to 73
Full protocol81 (58/72)76 (65/86)73 (58/79)82 (65/79)78 (123/158)
95% CI72 to 9067 to 8563 to 8374 to 9072 to 84
p Value<0.001NSNS<0.05<0.001