نتایج جستجو برای: odd ratio
تعداد نتایج: 523349 فیلتر نتایج به سال:
A detailed discussion of the point in polygon problem for arbitrary polygons is given. Two concepts for solving this problem are known in literature: the even–odd rule and the winding number, the former leading to ray-crossing, the latter to angle summation algorithms. First we show by mathematical means that both concepts are very closely related, thereby developing a first version of an algor...
BACKGROUND Knowledge of specific risk factors for incisional Surgical Site Infection (SSI) is essential to create a specific SSI risk stratification index for colorectal surgery patients. OBJECTIVE Identify factors increasing the risk of incisional SSI that lead to the development of a more efficient tool for predicting and comparing surgical site infection rates among surgeons and institutio...
Hypoxemia is the most common adverse event that happened during gastrointestinal endoscopy. To estimate risk of hypoxemia prior to endoscopy, American Society of Anesthesiology (ASA) classification scores were used as a major predictive factor. But the accuracy of ASA scores for predicting hypoxemia incidence was doubted here, considering that the classification system ignores much information ...
We study the ratio between the minimum size of an odd cycle vertex transversal and the maximum size of a collection of vertex-disjoint odd cycles in a planar graph. We show that this ratio is at most 10. For the corresponding edge version of this problem, Král and Voss recently proved that this ratio is at most 2; we also give a short proof of their result.
BACKGROUND There has been a long-standing debate regarding whether aminoglycosides should be administered on a multiple daily dosing (MDD) or once-daily dosing (ODD) schedule. Several unique characteristics of the aminoglycosides make ODD an attractive and possibly superior alternative to MDD. These include concentration-dependent bactericidal activity; postantibiotic effect, which allows conti...
بیماری آتاکسی تلانژکتازی (at) یک بیماری نادر اتوزومال مغلوب است که گسترش آن 40000/1 تا 300000/1 است. این بیماری به علت جهش در ژنatm ایجاد می شود که روی کروموزوم 11q 22.3 قراردارد. بیماری معمولا در دومین سال زندگی به صورت تدریجی و پیشرونده بروز می کند که شامل دژنره شدن اعصاب مخچه ای، عدم تعادل در حرکت، نقص سیستم ایمنی، عفونت های ریوی ، ناپایداری کروموزومی، دیسپلازی تیموس، حساسیت به اشعه پر انرژی...
Introduction: During the past few years, an increasing body of evidence has suggested a possible role for human herpes virus 6 (HHV-6) in Multiple Sclerosis (MS) pathogenesis. Despite the many reports supporting the relationship between HHV-6 and MS, this association has not been definitely proved or refuted, and the matter remains unresolved. The current study was aimed to investigate any rela...
Objectives: The current study was performed to investigate the relationship between mental impairment and each component of activity of daily living (ADL) in elderly residents of the Kahrizak Charity Foundation. Methods & Materials: Standardized Iranian Mini Mental examination and Barthel index were used to assest cognitive status and ADL in 184 elderly residents of Kahrizak, respectively. ...
زمینۀ مطالعه:مولکول‌های مجتمع عمده پذیرش بافتی (MHC)، در اتصال به پپتیدهای پادگنی و عرضه آن‌ها به لنفوسیت‌های T نقش مهمی دارند و تنوع آن‌ها با پاسخ‌های ایمنی و خودایمنی مرتبط است. ارتباط ژن کدکننده MHC کلاس 2 در سگ (DRB1)با برخی بیماری‌های ایمنی سگ نشان داده شده است. هدف:کشف ارتباط بیماری درماتیت آتوپیک سگ با آلل‌های ژن DLA-DRB1. روش‌کار: تعداد 20 نمونه خون از سگ‌های مبتلا به درماتیت آتوپیک و ...
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