نتایج جستجو برای: صدک percentile
تعداد نتایج: 12849 فیلتر نتایج به سال:
مقدمه: مطالعات رشد در کشورهای مختلف نشان می‌دهد که در طول یک قرن و نیم گذشته میانگین اندازه‌های قد و وزن، یک روند صعودی را طی نموده است. در ایران مطالعات مختلفی بر روی رشد در اندازه‌های کوچک و در سطح استان‌ها انجام گرفته است. این مطالعات حتی برای آن مقطع زمانی قابل تعمیم به کل کشور نبوده و همچنین در دو یا چند مقطع مختلف زمانی نیز در یک مکان یا به‌طور گسترده در کشور انجام نگرفته است تا با استفاد...
BACKGROUND In 2009, the Centers for Medicare & Medicaid Services is publicly reporting hospital-level risk-standardized 30-day mortality and readmission rates after acute myocardial infarction (AMI) and heart failure (HF). We provide patterns of hospital performance, based on these measures. METHODS AND RESULTS We calculated the 30-day mortality and readmission rates for all Medicare fee-for-...
Purpose – This study is concerned with a problem in measuring citation impact with the aid of percentile data, which arises from the assignment of publications (or the journals in which the publications have appeared) by Thomson Reuters for the Web of Science to more than one subject category. If there is more than one subject category for a publication, it is initially unclear which category i...
OBJECTIVE The aim of this study was to highlight the clinical association of baseline levels of conjugated dienes in low-density lipoprotein (LDL-BCD) and nitric oxide (NO) with immunoglobulins (Igs) and T helper (Th)1/Th2 ratio in patients with newly diagnosed B-cell non-Hodgkin lymphoma (NHL). PATIENTS AND METHODS Thirty-two newly diagnosed patients with aggressive B-cell NHL and 25 age-, s...
A representative group of 33 medical students who were entering the junior year clerkships was tested for retention and recall of clinical information 3 months after taking an examination on the same subject. The students were not given an opportunity to review the subject. On 39 identical multiple choice test questions, the students' mean score declined 10 percentile points (P < 0.05) from tha...
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