Russell S Traiste等人根据咽部紧缩感、发音障碍、无喘息及气味作为症状触发因子等作为CVD的关键特征,在一组VCD和哮喘患者中通过多元逻辑回归模型建立了一个鉴别系统,即Pittsburgh Vocal Cord Dysfunction Index.。如果截断值≥4,这个鉴别系统诊断VCD的敏感性达到0.83,特异性为0.95,与咽喉镜证实的VCD相比较,诊断准确性也达到了77.8% 。[17]
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