The abnormality of HRV were diagnosed if the value of any index was lower than the threshold (?1.96s of controls). The specificity of the diagnosis standard was 93.9%,its sensitivity was 51.2% in Anginas,71.4% in AMIS.

• 心率变异诊断冠心病的阳性标准取低于对照组上述任一项指标95%25区间下限值，则其特异性为93.；9%25，心绞痛组敏感性为51