نتایج جستجو برای: multicenter
تعداد نتایج: 40857 فیلتر نتایج به سال:
OBJECTIVES To test one-month outcomes in a single center for their statistical power to corroborate conclusions derived from large multicenter databases. BACKGROUND Only with large, multicenter databases has it been possible to demonstrate more frequent occurrences of complications in patients treated by "low-volume operators." Critics feel that such analyses mask excellent performance by man...
OBJECTIVE To evaluate SAPS 3 performance in Spain, assessing discrimination and calibration in a multicenter study. DESIGN A prospective, multicenter study was carried out. PATIENTS AND SETTING A prospective cohort study was performed in Spanish hospitals between 2006 and 2011. MEASUREMENTS AND RESULTS A total of 2171 patients were included in the study. The mean age was 61.4±16.09 years,...
BACKGROUND Data on the etiologies of pneumonia among children are inadequate, especially in developing countries. The principal objective is to undertake a multicenter incident case-control study of <5-year-old children hospitalized with pneumonia in developing and emerging countries, aiming to identify the causative agents involved in pneumonia while assessing individual and microbial factors ...
A July 1997 assessment of the American Academy of Neurology (AAN) Therapeutics and Technology Subcommittee reviewed vagus nerve stimulation (VNS) for epilepsy, and concluded that it was promising, but not yet established. Subsequent to that review, a second multicenter, randomized, controlled clinical trial has shown safety and efficacy of VNS for treatment of intractable partial seizures. Give...
STUDY DESIGN A multicenter retrospective case series. OBJECTIVE Horner's syndrome is a known complication of anterior cervical spinal surgery, but it is rarely encountered in clinical practice. To better understand the incidence, risks, and neurologic outcomes associated with Horner's syndrome, a multicenter study was performed to review a large collective experience with this rare complicati...
purpose: to determine the prevalence of keratoconus (kcn) in patients with mitral valve prolapse (mvp). methods: this descriptive study was conducted on patients with mvp at shahid rajaei hospital during 2003-2004. corneal topography was performed in 392 subjects with absolute mitral valve prolapse based on perloff’s major criteria. orbscan was carried out in suspected kcn cases. results: patie...
introduction : to evaluate the clinical and radiographic outcomes of pulpotomy treatment with mineral trioxide aggregate (mta) in symptomatic mature permanent teeth with carious exposure. materials and methods: ten patients aged 27-54 years presented with 11 symptomatic permanent teeth ( n =11). each offending carious tooth was clinically and radiographically determined. we removed caries as co...
BackgroundCeliac disease is a common lifelong disorder. Recent studies indicate that the number of clinically detected cases has increased over last decades, however little known about changes in prevalence and detection rate celiac disease.AimTo evaluate current Italy by multicenter, mass screening study on large sample school-age children.Methodschildren aged 5–11 years were screened at schoo...
BACKGROUND Publication bias and/or true heterogeneity can skew aggregate impressions from scientific literature. To better determine aggregate measures for unruptured intracranial aneurysm (UIA) treatment, we analyzed adverse outcome rates of surgical clipping and endovascular coil embolization. METHODS Two independent reviewers searched MEDLINE for studies publishing adverse outcome rates fo...
BACKGROUND AND PURPOSE Ensuring the reliability and validity of outcome measures used in clinical trials is essential to the success of the trial. The Trial of Org 10172 in Acute Stroke Treatment (TOAST) is a multicenter clinical trial that is recruiting patients with acute ischemic stroke seen at medical centers across the United States. METHODS This paper describes an approach to train phys...
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