HPV DNA testing already has a poor positive predictive value, especially in younger girls, they point out, and the absolute number of true positive tests would decrease substantially in this scenario. 他们指出,HPVDNA检验的阳性预测值已经不高,特别是对年轻的女性,在这种情况下,真阳性检验的绝对数目将会显著降低。
More positive results were found, however, leading to a lower positive predictive value. 液基细胞学检测敏感性较高,因由较高假阳性率,导致阳性预测价值较低。
While they identify greater risk in populations of patients, in most instances their positive predictive value is low with a lot of false positives. 当他们表明患者中的一部分人群有更高的危险时,通常其阳性预测值较低,且有很多假阳性。
The specificity and positive predictive value in the combined detection were elevated. 联合检测可提高检测的特异性和阳性预测值。
The sensitivity, specificity and positive predictive value was 76.7 %, 72.6 % and 76.7 % respectively. 经直肠灰阶超声及彩色多普勒超声检查对诊断前列腺癌的敏感性、特异性、阳性预测值分别为70.0%,46.8%,60.7%和76.7%,72.6%,76.7%。