نتایج جستجو برای: wald statistic and risk factors
تعداد نتایج: 17043522 فیلتر نتایج به سال:
CONTEXT Although the heritability of atrial fibrillation (AF) is established, the contribution of familial AF to predicting new-onset AF remains unknown. OBJECTIVE To determine whether familial occurrence of AF is associated with new-onset AF beyond established risk factors. DESIGN, SETTING, AND PARTICIPANTS The Framingham Heart Study, a prospective community-based cohort study started in 1...
this study is conducted in universities located in ilam provinceto identify the factors affecting creative organization. the research methodis mixed, in that, statistic sample in qualitative section consists of expertsand in quantitative section consists of employees, professors, and top andmiddle managers in universities (payam-e-noor university, medicalsciences university, azad university and...
Background Exposure to electro-magnetic fields is a risk factor for abortion. We aimed to review the relationship between exposure to magnetic fields during pregnancy and the risk of abortion. Materials and Methods: Two independent researchers screened the articles with related keywords including: "Radiofrequency", "RF", "RF-EMFs",...
1- in a search directed to the reaction of compound)23(the cycloaddition reaction of 1,3- diphenylisobenzofurane)14(with p-benzoquinone)19(,followed by addition of cyclopentadiene was carried out.the specific spacial stracture of its ir,nmr,mass spectra. 2- in another attempt the kinetic stability and behavior of compounds)20(and)23(was studied.the main subject of this study was the highly reve...
Spatial scan statistic methods are commonly used for geographical disease surveillance and cluster detection. The standard spatial scan statistic does not model any variability in the underlying risks of subregions belonging to a detected cluster. For a multilevel risk cluster, the isotonic spatial scan statistic could model a centralized high-risk kernel in the cluster. Because variations in d...
Summary It is frequently observed in practice that the Wald statistic gives a poor assessment of statistical significance variance component. This paper provides detailed analytic insight into phenomenon by way two simple models, which point to an atypical geometry as source aberration. The latter can principle be checked numerically cover situations arbitrary complexity, such those arising fro...
caring for patients with severe head injury and increased intracranial pressure is one of the important activities of nurses. nurses with specialized information and new, faster decisions can be life-saving. the most important thing is that nurses should be aware of the activities and the factors that can increase intracranial pressure, to recognize. this triangle of risk factors for increased ...
BACKGROUND The present study aimed to validate the pooled cohort risk (PCR) equations in a Chinese ischemic stroke population and to explore its prognostic value in predicting stroke recurrence, coronary heart disease, and vascular death. MATERIAL AND METHODS Patients were selected from the China National Stroke Registry. The C statistic was used to examine the clinical prediction of the scores...
supervisors play an undeniable role in training teachers, before starting their professional experience by preparing them, at the initial years of their teaching by checking their work within the proper framework, and later on during their teaching by assessing their progress. but surprisingly, exploring their attributes, professional demands, and qualifications has remained a neglected theme i...
the skill of reading in english as a foreign language is an important and challenging one which is affected both by linguistic and extra linguistic factors. since vocabularies are part and parcel of every reading comprehension text, knowing enough vocabulary always facilitates this process. however, guessing strategy as one of the most important strategies has consistently ignored by language l...
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