The results show that HFECG has asensitivity(88.1%),and a specificity(76.6%)in diagnosis of CAD when morbidity rate(61. 9%),petive expectancy value is 85.9%,negative expectancy value is 79.90%.

• 结果显示在患病率为61．90%25的情况下，HFECG诊断CAD的敏感性和特异性分别为88．1%25和76．6%25；阳性预测值和阴性预测值分别为85．9%25和79．9%25。