阳性预测值

阳性预测值、敏感性、特异性和精确度、肿瘤诊断分期和治疗处理变化由123例未经治疗的头颈部肿瘤患者子集分析来决定。

PPV , sensitivity , specificity , accuracy , diagnostic upstaging , and treatment management changes were determined from subset analysis of123 previously untreated patients with HN cancer .

CABS取6为筛查界线分更为理想，其特异性为0.91，敏感性为0.82、一致率为0.87、阳性预测值为0.88、阴性预测值为0.86，且3岁以上儿童使用优于3岁以下。

The best cut-off score of CABS was 6 , and its specificity , sensitivity , accuracy , PPV and NPV were 0.91 , 0.82 , 0.87 , 0.88 and 0.86 respectively . It was more effective for children over 3 years .

妊高症阳性预测值MAP为25.9%，滚动试验为30.9%；

The positive rate of hypertension of pregnancy estimated by MAP was 25.9 % and by roll over test was 30.9 % .

结果分析CT、MRI及PET三者敏感性、特异性、准确性、阳性预测值和阴性预测值，并进行比较，发现其敏感性和特异性均无显著性差异（P值分别为0.377和0.7）。

Results The sensibility and specificity between CT , MRI and PET were not significant discrepancy ( P value were 0.377 and 0.7 respectively ) by contrast analysis .

特异性IgE检测结果与临床诊断之间的符合率较高，阳性预测值均大于94%，阴性预测值均大于80%。

The positive and negative predictive values were greater than 94 % and 80 % respectively .

倾斜5minNPY浓度较倾斜前下降达30pg／ml以上对倾斜试验结果的阳性预测值为77%、敏感性为83%、特异性为82%。

A early decrease of NPY concentrations more than 30 pg / ml predicted 77 % positive tilt response with 83 % sensitivity and 82 % specificity .

在鼻咽癌高发区不同血清特征的人群中，计算出ZEBRA／IgG阳性预测值，可为临床医生制定临床决策提供依据。

The ZEBRA / IgG positive level can be an indicator for prognosis in the area with high NPC incidence .

计算BIS判断镇静深度的敏感度和阳性预测值。

Sensitivity and positive predictive value of BIS were calculated to determine the role of BIS in assessing the depth of sedation .

结论：CT检查对于发现支气管肺癌纵隔侵犯有重要价值，改进CT扫描技术并制定特定判断标准有助于提高CT对支气管肺癌纵隔侵犯的阳性预测值。

Conclusion : CT has very important value in detecting mediastinal invasion of primary bronchogenic carcinoma . The positive predictive value may be higher , depending on the technique improving of CT scan and the criteria used .

常规CT检查诊断急性阑尾炎准确率38.5%，敏感性38.7%，特异性37.5%，阳性预测值70.6%，阴性预测值13.6%。

In contrast , conventional CT scanning yielded an accuracy of 38.5 % , sensitivity of 38.7 % , specificity of 37.5 % , positive predictive value of 70.6 % and negative predictive value of 13.6 % .

CT对于Ⅱ度椎弓根螺钉的敏感度为100%，特异度为88%，阳性预测值为60%，阴性预测值为100%。

Whereas , for pedicle screw of grade ⅱ, CT had a positive predictive value of 60 % , a negative predictive value of 100 % , a sensitivity of 100 % and a specificity of 88 % .

术前CT检查发现肿瘤残留的灵敏度为80.0%（28/35），阳性预测值为87.5%（28/32）。

The sensitivity of residual carcinoma detection by CT scan before operations was 80 . 0 % ( 28 / 35 ) , with the positive predictive value of 87 . 5 % ( 28 / 32 ) .

CRP诊断细菌性肠炎敏感度、特异度、准确度、阳性预测值及阴性预测值较PCT小。

The CRP diagnosis bacterium enteritis sensitivity , the peculiarity , the accuracy , the masculine forecast value and negative forecast value PCT is smaller .

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。

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 .

PCR扩增法灵敏度为66.7%，特异度为33.3%，与参照标准的符合率为61.9%，阳性预测值为85.7%，阴性预测值为14.3%；

The sensitivity of PCR was 66.7 % , the specificity was 33.3 % , the coincidence rate was 61.9 % , the positive predicted value was 85.7 % , the negative predicted value was 14.3 % ;

CRP、GR%灵敏度、阳性预测值、阴性预测值及准确性相似，均高于WBC。

The sensitivity , positive predictive and negative predictive values , and accuracy of CRP were similar to those of GR % and higher than those of WBC .

结果45例垂体腺瘤中，MRI预测海绵窦侵袭的敏感性为60%，特异性为85%，阳性预测值为83%，阴性预测值为63%。

Results The sensitivity of MRI for predicting cavernous sinus invasion was 60 % , its specificity 85 % , its positive predictive value 83 % and negative predictive value 63 % in 45 patients with pituitary adenoma .

以PCT2ng／ml为临界值，诊断重症感染的特异性达97.01%，与CRP相比，PCT诊断重症感染的敏感性、特异性、阳性预测值及阴性预测值更高，诊断准确性高。

Diagnostic sensitivity , specificity , positive and negative predictive value of PCT in severe infection disease were higher than CRP regarding 2 ng / ml as the cut-off value for PCT.

抗M3受体抗体对SS的敏感性和特异性分别为83.8%和97.5%，阳性预测值为95.7%，阴性预测值为90.0%。

{ 2 } Its sensitivity was 83.8 % and specificity was 97.5 % in SS with a positive predictive rate of 95.7 % and negative prediction rate of 90.0 % .

结果：MRI诊断ACL撕裂的敏感度为95.7%，特异度为85.7%，阳性预测值为88.5%，阴性预测值为94.7%。

Result : The sensitivity , specificity , positive predictive value and negative predictive value of MR diagnosis of ACL tears were 95.7 % , 85.7 % , 88.5 % and 94.7 % , respectively .

结果：螺旋CT诊断人未钙化肋软骨骨折的敏感性为93.54%，准确率为93.93%，阳性预测值93.54%，假阳性率3%，假阴性率3%。

Results : The diagnostic sensibility of spiral CT in non-calcified costal cartilage of human individual is 93.54 % , accurate rate is 93.93 % , positive predictive value is 93.54 % , false positive rate 3 % , false negative rate is 3 % .

并计算双期CTA、3D-DSA诊断自发性蛛网膜下腔出血病因的敏感性、特异性、阳性预测值及阴性预测值。

The sensitivity , specificity , positive predictive value and negative predictive value of double-phase CTA and 3D-DSA in SHA were also calculated .

结果①符合线路SPECT检出原发性胃癌的敏感性、特异性和阳性预测值分别为88.9%、100%和88.9%。

Results ① The sensitivity , specificity and positive predictive value of SPECT with coincidence imaging in gastric carcinoma detection was 88.9 % ( 16 / 18 ), 100 % and 88.9 % ;

ST段抬高Ⅱ<Ⅲ提示RCA为IRA的敏感性，特异性和阳性预测值分别为905%，90%和971%。

ST elevation ratio ⅱ / ⅲ < 1 identified RCA occlusion with sensitivity , specificity and positive predictive value of 90.5 % , 90 % and 97.1 % , respectively .

结果使用各参数估价重度MR的敏感性、特异性、阳性预测值和阴性预测值，以收缩期PVFRs分别为87%、93%、98%和70%；

Results For detecting the severe MR ( grade ⅲ ⅳ MR in left ventricular angiography ), the sensitivity , specificity , positive and negative predictive valves of the reversed pulmonary venous flow pattern were 87 % , 93 % , 98 % and 70 % , respectively ;

对SHCC的阳性预测值MDCT增强后多期扫描略高于MR动态增强扫描，分别为97·5%、97·6%和90·7%、94·7%。

The positive predictive values for small HCC were higher on dynamic MDCT ( 97.5 % , 97.6 % ) than on dynamic MRI ( 90.7 % , 94.7 % ), respectively .

TVS结合CDE诊断黄体血肿、成熟性囊性畸胎瘤、巧克力囊肿及恶性卵巢小肿块的灵敏度（Se）、阳性预测值（PV+）、阳性似然比（LR+）分别为80.00%、94.12%、59.20；

The Sensitivity , Positive Predictive Value , Positive Likelihood Ratio of hemorrhagic corpora luteum , mature cystic teratomas , endometriomas and small malignant masses were 80.00 % , 94.12 % , 59.20 ;

衣原体临床实验室检测的灵敏度和阳性预测值（PPS）分别为55%和26%，医师诊断的灵敏度和阳性预测值为61%和24%。

Results The sensitivity and the positive predictive value of chlamydiae detecting in STD clinic laboratory were 55 % and 26 % , that in clinical physicians were 61 % and 24 % .

以十二指肠溃疡预测HPylori感染其特异性、阳性预测值和阳性似然比分别为953%（CI919～98.7%）、833%（CI720～94.6%）和459。

With endoscopic diagnosis of duodenal ulcer as predictor of H.pylori-positive , the specificity , predictive value and positive likelihood ratio was 95.3 % ( CI91.9 ~ 98.7 % ), 83.3 % ( CI72.0 ~ 94.6 % ) and 4.59 , respectively .

上皮性卵巢癌患者血清SE一cad水平显著性升高，敏感性、特异性、阳性预测值、阴性预测值均达85%以上，可作为一种较好的肿瘤标志物进行应用。

The sensibility , specificity , positive prediction value and negative prediction value of sE-cad in diagnosis of epithelial ovarian carcinoma were all above 85 % . In a word , serum sE-cad could be used as tumor marker for epithelial ovarian carcinoma .