Sensitivity, specificity, positive predictive value, and negative predictive value of the dipyridamole sestamibi stress test in predicting graft occlusion or ≥=50% new native coronary artery disease in men versus women and in patients aged ≥65 years versus <65 years who had prior coronary artery bypass grafting

In 88 men and 56 women (mean age 68 ± 9 years) with previous coronary artery bypass surgery who had dipyridamole sestamibi stress tests ≤8 ± 7 days after coronary angiography performed because of cardiac symptoms, the sensitivity, specificity, positive predictive values, and negative predictive values of the test in predicting graft occlusion or ≥50% new native coronary artery disease (CAD) in men compared with women were 96% and 94% (p = NS), 30% and 67% (p = NS), 91% and 96% (p = NS), and 50% and 57% (p = NS), respectively. In 92 patients aged ≥65 years compared with 52 patients aged <65 years, the sensitivity, specificity, positive predictive value, and negative predictive value in predicting graft occlusion or ≥50% new native CAD were 95% and 95% (p = NS), 50% and 40% (p = NS), 96% and 87% (p <0.05), and 43% and 67% (p = NS), respectively.