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HbA1c与OGTT在糖尿病诊断中的应用比较 被引量:15

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摘要 目的评价糖化血红蛋白(HbA1c)、空腹血糖(FPG)和口服葡萄糖耐量试验(OGTT)、餐后2 h血糖(2hPG)在糖尿病(DM)诊断中的应用价值,并探讨HbA1c与诊断为DM相关的临界点。方法 769例疑似DM的就诊者行OGTT并测定HbA1c。通过绘制受试者工作特征曲线(ROC曲线)获得HbA1c、FPG、2hPG与诊断为DM相关的临界点,并比较三者的敏感性和特异性。结果以HbA1c≥6.5%检出DM者占70.2%,以FPG≥7.0 mmol/L检出DM者占76.3%,以2hPG≥11.1 mmol/L检出DM者占84.4%。HbA1c与诊断为DM相关的临界点为6.25%,敏感性为80.3%,特异性为77.2%;曲线下面积为0.857(95%CI 0.830~0.885),阳性似然比3.52,阴性似然比0.25。FPG与诊断为DM相关的临界点为6.65 mmol/L,敏感性为84.2%,特异性为83.3%;曲线下面积为0.918(95%CI 0.899~0.959),阳性似然比5.05,阴性似然比0.18。2hPG与诊断为DM相关的临界点为10.15 mmol/L,敏感性为89.9%,特异性为89.1%;曲线下面积为0.956(95%CI 0.943~0.969),阳性似然比8.24,阴性似然比0.11。结论在DM诊断指标中,敏感性和特异性最好的是2hPG,其次是FPG,再次是HbA1c。只有HbA1c、FPG、OGTT联合应用,才能确保DM诊断的准确性。
出处 《安徽医科大学学报》 CAS 北大核心 2011年第9期982-983,共2页 Acta Universitatis Medicinalis Anhui
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