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false-positive     
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  假阳性
     Results The positive rate of 10 minutes of 31 cases who were infected by Hp is 87.1%(27/31), the positive rate of 30 minutes is 96.78%(30/31); the false-positive rate of 56 cases who were not infected with Hp is 19.7%(11/56).
     结果 31例Hp感染患者10分钟阳性率87.1%(27/31) ,30分钟阳性率96.78 % (30/31) ,56例无Hp感染患者假阳性率19.7 % (11/56)。
短句来源
     In the cytological group, sensitivity was 94.59% , specifity rate was 81.54% , false-positive rate was 7.89% , false-negative rate was 13.11% , and accord rate was 90.61% .
     本组细胞学诊断的敏感度94 .5 9% ,特异度 81.5 4 % ,假阳性率 7.89% ,假阴性率 13.11% ,符合率 90 .6 1%。
短句来源
     False-positive percentage of LCT was LSIL22.9%, HSIL5.2%, SCC0.0%, AC0.0%.
     假阳性(误诊)率分别为LSIL22.9%(41/179)、 HSIL5.2%(5/96)、SCC0.0%(0/6)、AC0.0%(0/1)。
短句来源
     MRCP had a sensitivity of 100%(36/36) in diagnosing biliary complications after OLT,with a positive predictive value of 91.7%(33/36),a false-positive rate of 5.56%(2/36),and an overall diagnostic accuracy of 94.4%(51/54).
     MRCP诊断肝移植术后胆道并发症的敏感性为100%(36/36),阳性预测值91.7%(33/36),假阳性率为5.56%(2/36),诊断准确率为94.4%(51/54)。
短句来源
     Results The positive rate of LAM-B+38 kD-IgG in sera was 26.67%(28/105)in tuberculosis group and the false-positive rate of LAM-B+38 kD-IgG in sera was 1.96%(2/102) in non-tuberculosis group.
     结果血清抗LAM-B+相对分子质量为38-IgG阳性率:非结核病组假阳性率1.96%(2/102);
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  例假阳性
     By diagnosis of 99mTc-MIBI imaging,axillary lymph node metastasis false-negative 6 cases, false-positive 2 cases. The sensitivity of scintimammograph in detecting metastatic axillary lymph node was 78.6%, and the specificity was 90.1%,the accuracy was 84%.
     99mTc-MIBI显像诊断乳腺癌腋窝淋巴结转移假阴性6例,假阳性2例,其灵敏度78.6%,特异性为90.1%,准确性为84%。
短句来源
     19S-IgM-TPPA test were positive in 16 infants,2 false-positive and 4 false negative. Sensitivity rate was 77.78%(symptomatic 78.57%,asymptomatic 75%),specificity 98.37%,diagnostic index 176.15%,respectively.
     19S-IgM-TPPA试验阳性结果16例,假阳性2例,假阴性4例,敏感性77.78%(有症状78.57%,无症状75%),特异性98.37%,诊断指数176.15%;
短句来源
     There were 71 true-negative,4 false-negative,21 true-positive,1 false-positive cases on axial T2-weighted images. The sensitivity,specificity,negative predictive value,positive predictive value and the overall accuracy of axial-T2WI were 84.6%,98.6%,94.7%,95% and 94.8% respectively.
     横轴位T2WI真阴性71例,假阴性4例,真阳性21例,假阳性1例,敏感性为84.6%,特异性为98.6%,阴性预期价值为94.7%,阳性预期价值为95%,总的正确率为94.8%;
短句来源
     Results Ultrasonographically,20 cases were accurately diagnosed,3 cases were false-negative and 1 cases was false-positive.
     结果超声诊断符合有20例,假阴性3例,假阳性1例。
短句来源
     Results There were 66 true-negative,one false-negative,24 true-positive,6 false-positive MRCP among the overall 97cases. The sensitivity,specificity,negative predictive value,positive predictive value and the overall accuracy of MRCP were 96.8%,92%,98.5%,80% and 92.8% respectively.
     结果97例中MRCP真阴性66例,假阴性1例,真阳性24例,假阳性6例,敏感性为96.8%,特异性为92%,阴性预期价值为98.5%,阳性预期价值为80%,总的正确率为92.8%。
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  假阳性的
     False-positive results mostly are caused by the inflammatory pseudotumor, analysis of its time-attenuation curve could help differentiate from the malignant nodule.
     炎性假瘤是产生假阳性的主要原因,动态曲线分析对其与恶性结节的鉴别有一定帮助。
短句来源
     Tuberculosis is the main disease that brings false-positive conclusion.
     结核是引起假阳性的主要病种,符合线路断层显像误判的9例中,6例为结核。
短句来源
     The problem of false-positive reactions,due to the cross-reactive nature of the antigen preparations used,can largely be overcome by using a comparative assay in which an animal's IFN-γ response to bovine PPD and avian PPD are compared.
     假阳性反应的难题归因于所使用的抗原制品间的交叉反应特性,设动物对牛PPD和禽PPD的r干扰素反应作对照可解决假阳性的问题。
短句来源
     Conclusions The urine NMP 22 has high sensitivity in patients with urothelial tumors,but the clinical factors that contribute to false-positive of urine NMP 22 should be considered in diagonsis of urothelial tumors.
     结论 尿液NMP 2 2检测诊断尿路上皮肿瘤有较高的敏感性 ,但诊断中需全面考虑造成假阳性的临床因素 ;
短句来源
     his study aimed to overcome false - positive in detection of tumor micrometastases by reverse transcriptase - polymerase chain reaction (RT - PCR),Using this method , the authors amplified cytokeratin 19(CK19) mRNA in histologically involved regional lymph nodes of 40 patients with non - small - cell - lung - carcinoma and 20 with esophgus cancer. In addition , they amplified CK19 mRNA in DNase - pretreated normal nodes of 10 . respectively.
     为探讨克服RT-PCR法检测恶性肿瘤微转移时出现假阳性的方法,作者运用该法检测了40例非小细胞肺癌和20例食管癌患者病理证实有转移的淋巴结中角蛋白19(CK19)基因的表达,同时还分别运用套式RT-PCE或RT-PCR法检测了10例良性肺和食管肿瘤患者正常淋巴结中CK19基因的表达。
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  假阳性原因
     Analysis on false-positive cases of fetal umbilical cord around the neck diagnosed by color doppler ultrasound
     彩超诊断胎儿脐带绕颈假阳性原因分析
短句来源
     Analysis of false-positive associated with antibody tests for SARS-CoV
     SARS-CoV抗体实验诊断中的假阳性原因分析
短句来源

 

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    The model system can be used to evaluate the sensitivity of a chemical cleavage method and to control false-positive and false-negative results when different protocols are applied to the detection of DNA point mutations.
          
    The presence of temperate phages in phage-typing preparations may cause false-positive results in identifying specific Salmonella strains isolated from the environment or salmonellosis patients.
          
    When the period of the sine-wave curve was allowed to vary in order to fit the data best, none of the statistical tests reached the level of significance required to dismiss the possibility of false-positive results.
          
    On days 1 and 3 the true-positive ratio (sensitivity) was plotted against false-positive ratio (1-specifity) for each score.
          
    However, also the quantitative culture technique whether applied on noninvasively or invasively retrieved samples is associated with false-negative and false-positive results in 10-30%.
          
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    In order to improve the work of electrocardiography in children, theliterature has been reviewed and 4 points are discussed in this paper. 1. Technique of recording: Direct writing ECG machine with elec-trodes of adequate sizes for different ages, the application of electrodepaste to a limited area and to keep the baby quiet during ECG exami-nation are essential for good recording. In addition to the usual precordialleads, V_3R or V_4R should be recorded. A paper speed of 50mm persecond for newborns and infants...

    In order to improve the work of electrocardiography in children, theliterature has been reviewed and 4 points are discussed in this paper. 1. Technique of recording: Direct writing ECG machine with elec-trodes of adequate sizes for different ages, the application of electrodepaste to a limited area and to keep the baby quiet during ECG exami-nation are essential for good recording. In addition to the usual precordialleads, V_3R or V_4R should be recorded. A paper speed of 50mm persecond for newborns and infants is proposed. 2. Normal values of electrocardiography in children: The normalvalues of ECG in children should reflect not only the proper age of thechild examined but also should be simple, clear and easy for clinicalapplication. By using the data of our studies and those of others inChina, a set of normal values has been worked out. 3. The ECG criteria of ventricular hypertrophy for Chinese children:These criteria are proposed with a discussion of their sensitivity andaccuracy in diagnosis. In case of right ventricular hypertrophy, the sensi-tivity is high but accuracy low, and a false positive diagnosis is easilymade. The younger the age, the more difficult the differentiation of thepathologic right ventricular hypertrophy from physiologic right ventricularpredominance. 4. Overloading of ventricles: Based upon the physiology of ventri-cular overloading and the data of clinical and ECG studies, Cabrara pro-posed the ECG criteria of various ventricular overloadings. It is general-ly accepted that the ECG of a child with overloading of the ventriclesis helpful in the diagnosis of congenital heart disease, although some wri-ters do not quite agree with him.

    本文作者复习文献并合结自己的研究资料,提出简明实用的小儿心电图正常值及小儿心室肥厚的诊断标准,以供参考。

    Sheep red blood cells(SRBC), treated with tannic acid and glutaralde-hyde were sensitized with cysticercus fluid antigen, lyophilized and stored in ampoules at 4℃. Using such lyophilized sensitized SRBC a passive he-magglutination reaction on polystyrene plates was developed for the diagnosis of cysticercosis. Serum samples from 113 cases of cysticercosis and 196 cases of other diseases and normal controls were examined. A comparison was made of this reaction in parallel with an ordinary passive hemaggluti-nation...

    Sheep red blood cells(SRBC), treated with tannic acid and glutaralde-hyde were sensitized with cysticercus fluid antigen, lyophilized and stored in ampoules at 4℃. Using such lyophilized sensitized SRBC a passive he-magglutination reaction on polystyrene plates was developed for the diagnosis of cysticercosis. Serum samples from 113 cases of cysticercosis and 196 cases of other diseases and normal controls were examined. A comparison was made of this reaction in parallel with an ordinary passive hemaggluti-nation reaction and a complement fixation test. It was found that the he-magglutination reaction posseses the following advantages:1) High sensitivity with a postive rate of 95.6% in. proved cases of cysticercosis. Comparison of the three tests among 100 cases showed a higher positive rate by the two hemagglutination tests(98%)than the complement fixation test(91%), the hemagglutination test using lyophilized sensitized SRBC usually giving a higher titer than the ordinary hemagglutination reaction. 2) High specificity. There was no cross reaction in 25 cases of clo-norchiasis, 1 case of echinococcosis, 19 cases of brain tumor and 1 case of tuberculous pleurisy and there was no false positive reaction in 150 healthy subjects.3 ) Only 25 μ1 of serum are needed for each test , and so blood from earlobe and finger tips can be used.4) Performance is simple and endpoint can be read within 1 hour.5) The lyophilized sensitized SRBC can be kept for more than one year without loss of activity.

    本文报导用冻干致敏羊红细胞进行囊虫病间接血凝平板微量试验检查囊虫病113例及其他疾病和健康对照共196例的结果,同时与一般间接血凝和补体结合试验进行了平行对比观察,发现本法具有下述主要优点;(1)灵敏度高,检出率高达95.6%。在100例囊虫病的三种方法平行对比观察中,两种间接血凝法检出率为98%,超过补体结合试验(91%),而冻干间接血凝效价高于一般间接血凝试验。(2)特异性较强,肝吸虫病25例,棘球蚴病1例,脑瘤19例,胸膜结核1例,健康人150例均未出现阳性反应。(3)血清用量少,每次试验只需样品25微升(可用耳血或指血)。(4)操作简单,反应快速,一小时内即可报告结果。(5)保存时间长,抗原致敏的羊红细胞冻干后保存,一年后效价仍稳定不减。鉴于以上优点,我们建议由生物制品部门批量生产供应基层医疗防治单位应用。

    Oxytocin challenge test (OCT) was performed on 51 cases of high-risk pregnancy for fetal assessment and uteroplacental function during the period of August 1978 to July 1979. The technics and patterns of clinical response to OCT were described. 38 cases (74.5%) showed negative test, 9 (17.7%) positive and the remaining 4 (7.8%) were equivocal. However, 3 out of 38 cases (7.9%) were found to be "false-negative" and 3 out of 9 (33.3%) were "false-positive". The chances of meconium-staining amniotic fluid,...

    Oxytocin challenge test (OCT) was performed on 51 cases of high-risk pregnancy for fetal assessment and uteroplacental function during the period of August 1978 to July 1979. The technics and patterns of clinical response to OCT were described. 38 cases (74.5%) showed negative test, 9 (17.7%) positive and the remaining 4 (7.8%) were equivocal. However, 3 out of 38 cases (7.9%) were found to be "false-negative" and 3 out of 9 (33.3%) were "false-positive". The chances of meconium-staining amniotic fluid, intrauterine fetal distress and neonatal resuscitation necessitating endotracheal intubation in those with positive OCT were higher than those with negative or equivocal response (p<0.01). Some suggestions on clinical management according to various patterns of OCT were made.

    本文回顾性地小结了自1978年8月~1979年7月,在产前对51例高危孕妇进行了60次催产素应激试验(OCT),作为预测估计胎儿、胎盘情况的方法。文中介绍了试验方法,评定标准,以及OCT阴性、可疑、阳性与临床的关系.本组产妇,阴性试验为74.51%,可疑试验为7.84%,阳性试验为17.65%,假阴性率为7.89%,假阳性率为33.33%.研究结果表明:阳性试验的产妇在分娩过程中出现胎粪性羊水、胎儿宫内窘迫和需要气管插管复苏的机会均明显高于试验阴性和可疑的产妇(P<0.01).同时结合文献讨论了催产素应激试验各种类型的临床意义,并初步提出临床处理的建议.

     
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