نتایج جستجو برای: positive predictive value (ppv)
تعداد نتایج: 1420372 فیلتر نتایج به سال:
objective: to determine the diagnostic value of serum white blood cell (wbc) count, fever (>38˚c) and wbc rise (>10%) for bacterial meningitis in patients with severe traumatic brain injury (tbi). m et h o d : this cross-sectional study was conducted in shahid rajaei hospital affiliated with shiraz university of medical sciences during a 1-year period from 2013 to 2014. we included consecutivel...
Background and purpose: Appendectomy is the most common emergency surgery and diagnosis of this clinical problem is of great importance in decreasing the complications and treatment costs. In this study the diagnostic value of bilirubin level and WBC count in acute appendicitis were compared. Materials and methods: A cross-sectional study was performed in patients attending Emergency Departm...
Abstract Background: Regarding the diagnostic errors of the classic criteria including serum ascites albumin gradient (SAAG), total protein concentration and the adapted Light et al’s criteria in distinguishing transudate versus exudates, we evaluated the ascitic fluid to serum bilirubin ratio as a new criteria in this regard. We also evaluated whether the combination of bilirubin r...
Background: The most common methods for screening of patients with probable ischemic heart disease are stress test and in special conditions are perfusion scan, so that their positive results was important indication of coronary angiography. Although, predictive value of perfusion scan has been considered, with regard to the impact of technical and specialized factors and according to the sprea...
259 consecutive colposcopic examinations were done at colposcopic unit in Shariati Hospital during 1995-97. 58 cases were omitted due to lack of biopsy report. There were 167 cases of concordance and 34 cases of discordance between results of pap test colposcopic directed biopsy in these cases. We evaluated the value of pap test as a screening test versus colposcopic directed biopsy and found s...
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abstract background: regarding the diagnostic errors of the classic criteria including serum ascites albumin gradient (saag), total protein concentration and the adapted light et al’s criteria in distinguishing transudate versus exudates, we evaluated the ascitic fluid to serum bilirubin ratio as a new criteria in this regard. we also evaluated whether the combination of bilirubin ratio with ea...
با گسترش روزافزون شبکه های کامپیوتری و استفاده از آن، مسائل امنیتی در این ارتباطات در سالهای اخیر اهمیت ویژه ای یافته است. بزرگترین خطر امنیتی که اینترنت در حال حاضر با آن مواجه است، انتشار سریع نرم افزارهای بدخواه اینترنتی است. طرحهای مبتنی بر امضا غالباً در تشخیص نرم افزارهای بدخواه یک روزه ناتوان بوده و با توجه به اینکه نوعاً نیازمند دخالت انسانی برای فرموله کردن امضاهای حملات جدید هستند، توان...
Abstract Background: Rheumatoid Arthritis, (RA) is a chronic inflammatory autoimmune disease with a progressive course requiring early diagnosis and treatment. The value of anti-cyclic citrullinated peptide antibodies (Anti-CCP) in the diagnosis of RA has been shown in several studies. The present study was designed to determine and compare the diagnostic value of Anti-CCP and rheumatoid fac...
Abstract Background: Usual diagnostic methods for detection of Cryptosporidium include smear preparation, modified Zeihl-Neelsen staining, microscopic examination and observation of oocysts. No studies have been done to compare PCR and Zeihl-Neelsen staining in Iran. This study was done to determine the positive predictive value, (PPV) and the negative predictive value (NPV) of PCR in compariso...
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