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false-negativity
相关语句
  相似匹配句对
     False Words
     绞刑架False
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     On False Information
     试论言语假信息
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     Hermeneutics and false-reading
     诠释与误读
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     False-negative is 0%;
     假阴性0%;
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     On Negativity Thought of Lao Tze
     论《老子》中的否定性思维
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o evaluate Whether a pregnant woman is inanemia or there exist the needs to replenish ironis usually based on the measurement of hemo-globin ( HB)concentration,because the evaluationof iron nutritional status has not yet been usedWidely in onr country.Blood specimens were collected from 258 preg- nant women,and concentrations of Hb,serumferritin(SF)and free erythrocyte protoporphyrin(FEP) were determined to find out a reasonablyboundary value of Hb concentration from the two different ones set by out country...

o evaluate Whether a pregnant woman is inanemia or there exist the needs to replenish ironis usually based on the measurement of hemo-globin ( HB)concentration,because the evaluationof iron nutritional status has not yet been usedWidely in onr country.Blood specimens were collected from 258 preg- nant women,and concentrations of Hb,serumferritin(SF)and free erythrocyte protoporphyrin(FEP) were determined to find out a reasonablyboundary value of Hb concentration from the two different ones set by out country and WHO,respectively,and the one averaged the formertwo,i.e,100g/L,110g/L and 105g/L.Falsepositivity and false negativity in diagnosis ofiron d ficiency anemia(IDA)for pregnantwomen were evaluated baseden on the measurement of SF and FEP concentrations as gold standards.Results showed that the optimal Hb concentration for preliminary diagnosis of IDA was 105g/L with maximizing Youden index.

由于国内评价铁营养状况的检测方法尚未普及,目前一般只能依据血红蛋白(Hb)的检测结果来判断孕妇是否贫血和是否需要补铁。为了找出一合理的Hb界限值,以平衡由此带来的缺铁诊断的假阳性和假阴性偏性,笔者对256名孕妇的Hb、血清铁蛋白(SF)和红细胞原卟啉(FEP)三项指标检测的基础上,探讨了Hb的三个不同界限值(国内定界限值:Hb=100g/L;世界卫生组织定界限值;Hb=110g/L;和二者均值:Hb=105g/L)时,孕妇缺铁诊断假阳性和假阴性的程度,借用流行病学筛查的指标,提出了与SF和FEP检测结果相符合为标准,以两项约登指数(YI)之和最大为原则的衡量方法,以此选出Hb=105g/L为粗判孕妇缺铁性贫血的界限值为最佳。

Objective To investigate lymphatic drainage of rectal and lymphatic spread of rectal cancer. Methods Rectal endoscopic lymphoscintigraphy was performed in 37 volunteers and 16 patients. One millilitre dextran marked with 99m Tcwas injected bilaterally into submucosa of the rectum through rectal endoscopy. 1,2,3 hours after the injection, rectal lymphoscintigraphy was registered with a computerized gamma camera(TOSHIBA GCA901A). Results Lymphoscintigraphy in control subjects showed upward epirectal...

Objective To investigate lymphatic drainage of rectal and lymphatic spread of rectal cancer. Methods Rectal endoscopic lymphoscintigraphy was performed in 37 volunteers and 16 patients. One millilitre dextran marked with 99m Tcwas injected bilaterally into submucosa of the rectum through rectal endoscopy. 1,2,3 hours after the injection, rectal lymphoscintigraphy was registered with a computerized gamma camera(TOSHIBA GCA901A). Results Lymphoscintigraphy in control subjects showed upward epirectal and pararectal nodes. The average number of the nodes was 12 three hours after the injection. Compared with histological node examination in all patients operated upon for rectal cancer, rectal endoscopic lymphoscintigraphy showed a sensitivity of 97 1%,a specificity of 75 0%, an overall accuracy of 87 5%, a false positivity of 25 0%, and false negativity of 8 3%. Conclusion The method is better for evaluating lymphatic spread of rectal cancer before operation.

目的 探索正常人经肛门镜直肠粘膜下核素注射后 ,淋巴显像时间、正常淋巴引流图谱及直肠癌患者术前淋巴结转移的评估方法。 方法  1ml99m Tc右旋糖酐作为淋巴显像剂 ,对 3 7例正常人及 16例直肠癌患者经肛门镜直肠粘膜下注射 ,分别于注射后 1、2、3小时采用TOSHIBAGCA90 1A型SPECT机显像 ,获得正常人及直肠癌患者的核素淋巴引流闪烁图谱。 结果 在正常人直肠淋巴引流显像中均显示向头侧的淋巴引流链 ,3小时后平均显影的淋巴结为 12个。该方法用于直肠癌术前淋巴结转移的评估其敏感性为 97 1% ,特异性 75 0 % ,准确性 87 5 % ,假阳性率 2 5 0 % ,假阴性率8 3 %。 结论 该方法是一种较为理想的直肠癌淋巴转移的术前评估方法。

Objective To select some practically useful items with higher positive rates from the currently applied seven serologic markers (SE-SLT、 LN、 HA、 CEA、 NSE、 AIF、 CA242) for diagnosis of lung cancer. Methods These seven markers were detected by ELISA, RIA and IRMA in lang cancer patients (273), CAB patients (179) and 193 controls. Sensitivity, specificity, false positivity and false negativity were compared and analyzed. Results The levels of all seven markers in lung cancer patients were higher than those...

Objective To select some practically useful items with higher positive rates from the currently applied seven serologic markers (SE-SLT、 LN、 HA、 CEA、 NSE、 AIF、 CA242) for diagnosis of lung cancer. Methods These seven markers were detected by ELISA, RIA and IRMA in lang cancer patients (273), CAB patients (179) and 193 controls. Sensitivity, specificity, false positivity and false negativity were compared and analyzed. Results The levels of all seven markers in lung cancer patients were higher than those in controls (P<0.01). The sensitivity of SE-SLT was the highest (81.6%) with lowest falsenegativity (18.4%). The specificity of CA242 was highest (96%) with lowest false positivity (4.0%). Conclusions Simultaneous SE-SLT and CA242 detection with routine CEA and NSE detection is a good model for diagnosis of lung cancer.

目的 :对血清SE -SLT、LN、HA、CEA、NSE、AIF、CA242进行测定 ,旨在筛选实用的肺癌诊断标志物 ,提高阳性检出率。方法 :分别采用ELISA、RIA和IRMA法对肺癌组、慢性支气管炎(CAB)组及正常对照组进行七项指标测定 ,并从敏感性、特异性、假阳性、假阴性等方面进行比较分析。结果 :肺癌组七项指标含量均高于正常对照组(P<0.01),SE -SLT敏感性最高(81.6 %) ,假阴性率最低(18.4%) ;CA242特异性最强(96.0%) ,假阳性率最低(4.0 %)。结论 :在常规进行CEA或NSE测定同时检测SE -SLT和CA242是优势互补诊断肺癌的较好的组合模式。

 
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