نتایج جستجو برای: prognosis factor
تعداد نتایج: 942812 فیلتر نتایج به سال:
an elevated pulmonary artery pressure (pap) from any cause is associated with increased mortality, especially in cases of primary pulmonary arterial hypertension (pah). one of the many reasons behind a bad prognosis is the inherent difficulty in assessing right ventricular (rv) function with reproducible methods. intensive research involving the left heart has made it relatively easy to assess ...
در سال های اخیر، کاربرد مدل های هیدرولوژیکی توزیعی بر پایه فیزیکی افزایش یافته است. با این حال بسیاری از سوالات در خصوص واسنجی و صحت سنجی صحیح مدل های توزیعی و ارزیابی عدم قطعیت پارامترهای تخمینی، هنوز هم ناشناخته است. به خصوص برای مدل های پیچیده، تخمین پارامترها به طور صحیح، کاهش فضای پارامتری و استفاده از الگوریتم های موثر و کارآمد به منظور کاهش عدم قطعیت و تسهیل فرآیند واسنجی امری ضروریست. ه...
در این تحقیق به بررسی پارامترهای بیلان آب حوضه رودخانه آق چای در شمال استان آذربایجان غربی، با مساحت 1440.89 کیلومتر مربع پرداخته شده است. مدل سازی بارش-رواناب با گام زمانی روزانه و با استفاده از مدل نیمه توزیعی swat و بهینه سازی پارامترهای حوضه، بررسی عدم قطعیت مدل و پارامترها با برنامه swat-cup انجام گرفته است. کاربرد الگوریتم sufi-2 در بررسی عدم قطعیت نشان داد مقدار ضریب ناش برای دوره واسنج...
To assess the relationship between intestinal obstruction and the prognosis of rectal cancer. Data of 151 rectal cancer patients were extracted between January 2010 and October 2015 to survival analyse. The Kaplan-Meier method is used to survival analyse. The log-rank test was executed to compare the survival rate between patients with intestinal obstruction and those without intestinal obstruc...
BACKGROUND The influence of parity and time interval between age at first pregnancy (AFP) and age at diagnosis on breast cancer survival is not established in the same way as their influence on breast cancer risk. We aimed to investigate the association of time interval or parity with prognosis in pre- and postmenopausal women in Korea. METHODS We conducted a retrospective study of 29,167 wom...
Background Scoliosis is a disease that develops during growth and knowledge of scalability is essential for making treatment decisions. Of the many factors analyzed, are evidence of sex, topography, menarche , age, rapid growth spurt the magnitude of the curve, Risser 0 1 and the imbalance of occipital axis> 10 mm. The degree of reductibility or flexibility is also seen as a predictor of progre...
PURPOSE Vascular endothelial growth factor (VEGF) promotes angiogenesis and vascular permeability. The VEGF gene is polymorphic. We investigated the prognostic significance of three VEGF single nucleotide polymorphisms (SNP) in esophageal cancer. EXPERIMENTAL DESIGN Three hundred sixty-one patients were genotyped for three VEGF SNPs (-460T/C, 405G/C, and 936C/T) using DNA extracted from prosp...
To determine if occupational factors were associated with the outcome in workers with UEMS symptoms or disorders, we used data from the repetitive task survey performed in 1993 1994 and again in 1996 1997. The design has been described in earlier publications. , – – [8 Each worker had a standardized medical examination at baseline and again in 1996 1997. The self-administered questionnaire fill...
Prognostic factor research aims to identify factors associated with subsequent clinical outcome in people with a particular disease or health condition. In this article, the second in the PROGRESS series, the authors discuss the role of prognostic factors in current clinical practice, randomised trials, and developing new interventions, and explain why and how prognostic factor research should ...
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