نتایج جستجو برای: positive predictive value
تعداد نتایج: 1418773 فیلتر نتایج به سال:
A statistically significant research finding should not be defined as a P-value of 0.05 or less, because this definition does not take into account study power. Statistical significance was originally defined by Fisher RA as a P-value of 0.05 or less. According to Fisher, any finding that is likely to occur by random variation no more than 1 in 20 times is considered significant. Neyman J and P...
ABSTRACT To evaluate the reliability of modalities of management of patients with penetrating civilian abdominal and flank trauma, hospital records of all affected patients, who were managed in Hazrat Rasul-e Akram and Haft-e Tir hospitals in Tehran, have been reviewed over a seven-year period, ending on march 19, 1996. These hospitals are level two trauma centers affiliated to the...
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...
background: this study was conducted to assess the validity and reliability of ankle?brachial index (abi) by oscillometric blood pressure (bp) measurement as compared with an automated abi as a gold standard. materials and methods: this study was conducted at golden jubilee medical center, thailand. all the data were collected from 303 patients at risk of peripheral arterial disease (pad) who w...
Objective: one of the best tests for the assessment of a fetus is the biophysical profile test which has a significant effect on fetus health and the outcome of pregnancy. The present study was designed to determine the relationship between the full biophysical profile and the rapid biophysical profile tests in antepartum fetal surveillance. Patients and Methods: In this prospective study, Sin...
Abstract Background and Objectives: one of the endemic foci for Cutaneous Leishmaniasis in Iran is Mashhad in which limited outbreak have recently been reported. The commonly used method for diagnosis is the clinical features confirmed by direct microspic examination and culture or biopsy. We compared these two tests to determine the level of their sensitivity, specificity and positive predicti...
conclusions although lap had good performance in early diagnosis of gas, a combination of clinical findings, including tonsillar exudates, petechiae with results of rapid antigen test or culture is necessary for clinician judgment. throat culture is the gold standard test for detecting group a streptococcal infection, but rapid test is a good replacement for culture. objectives the aim of this ...
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...
Background: The purpose of this study was to evaluate the value of perioperative tests for the diagnosis of infectionin revision shoulder arthroplasty.Methods: A retrospective analysis was performed on 537 shoulder arthroplasties (429 patients) that underwent revisionshoulder arthroplasty at our institution. Periprosthetic tissue cultures were positive in 169/537 surgeries.Results: White-blood ...
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