نتایج جستجو برای: positive predictive value ppv
تعداد نتایج: 1420372 فیلتر نتایج به سال:
OBJECTIVE: 1) To correlate caloric results with sinusoidal and step-velocity rotary chair gain, phase, asymmetry and time constant values in all patients; 2) To evaluate sensitivity, specificity, positive predictive value and negative predictive value of both tests in patients with vestibular dizziness. STUDY DESIGN: Retrospective case review. SETTING: Academic tertiary care vestibular function...
background cryptosporidium spp. is a widespread protozoan parasite involving humans and animals. objectives this study was carried out to evaluate the immunofluorescence assay (ifa) and pcr results for more accurate diagnosis of faecal specimens. patients and methods forty six faecal human specimens of cryptosporidium oocysts were examined by pcr and ifa in calgary, canada. in statistical analy...
Most retrospective studies evaluating fresh-frozen plasma:packed red blood cell ratios in trauma patients requiring massive transfusion (MT) are limited by survival bias. As prospective resource-intensive studies are being designed to better evaluate resuscitation strategies, it is imperative that patients with a high likelihood of MT are identified early. The objective of this study was to dev...
Literature about the value of diagnostic tests for hazelnut allergy in children is scarce. For peanut allergy cutoff levels of specific IgE with a 95% positive predictive value (PPV) were published. To evaluate current diagnostics for hazelnut allergy in children, data of 151 children, who underwent a double-blind placebo-controlled food challenge (DBPCFC) for hazelnut were analyzed. The PPV or...
abstract background: squamous cell carcinoma (scc) constitutes the main oral malignancy . parallel to better understanding of molecular and genetic patterns of tumor behavior, more precise correlation of tumor markers such as epidermal growth factor (egf) and laminin-5 are sought to estimate macroscopic and microscopic tumor status . methods: we conducted a cross-sectional study collecting ...
background and objective: this study was undertaken to assess the ability of standard urinalysis (ua) and hemocytometer white blood cell (wbc) counts for the diagnosis of urinary tract infection (uti) in patients with urinary symptoms. materials and methods: a total of 600 patients with symptoms of urinary tract infection were enrolled in this prospective study. standard ua, hemocytometer wbc c...
conclusions the fev1/fev6 ratio can be used as a valid surrogate for fev1/fvc in the diagnosis of airway obstruction, especially for screening purposes in high-risk populations for copd. moreover, fev6 is an acceptable alternative for fvc in detection of restrictive pattern. results this study shows that the current cut-off points used to detect obstruction and restriction can be replaced by fe...
The objective of this study is to assess the value of postcone endocervical curettage, after conization of cervical intraepithelial neoplasia or carcinoma as a predictive tool for residual lesions. This is a retrospective observational study. All data were obtained by the University Hospital of Zurich, Department of Gynaecology. One hundred fifty patients underwent hysterectomy within 12 months...
Objectives:1-To determine the Positive Predictive Value(PPV) of ?glandularNeoplasia and borderline nuclear changes in glandularcells by comparing and correlating the cytology andhistological reports. 2Compare the Positive Predictive Value(PPV) to other recent studies inLiterature. Design: Retrospective review Method: Review of the cytology and histology reports via elect...
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