نتایج جستجو برای: survival analysis
تعداد نتایج: 3074356 فیلتر نتایج به سال:
Introduction: Thalasemia Major is one of the most common anemia diseases that can be fatal if not promptly diagnosed. The survival analysis of these patients can be an appropriate strategy in determining risk factors for death in these patients. The purpose of this study was to choose the best model to determine the risk factors for death in patients with the thalasemia major using common metho...
Background: the aim of this study was to investigate the prognostic value of 18Fluorine-fluorodeoxyglucose positron emission tomography/computed tomography (18F-FDG PET/CT) parameters in both overall survival and progression-free survival in Stage I-III non-small cell lung cancer (NSCLC). Materials and Methods: In this retrospective study, 267 patients who were diagnosed as Stage I-III non-smal...
the present study reports an analysis of response articles in four different disciplines in the social sciences, i.e., linguistics, english for specific purposes (esp), accounting, and psychology. the study has three phases: micro analysis, macro analysis, and e-mail interview. the results of the micro analysis indicate that a three-level linguistic pattern is used by the writers in order to cr...
conclusions in this study, the patients’ survival rate was 73%, which is quite low compared to the survival rate reported in other studies. although we only have a 12-year experience with pediatric liver transplantation, the survival rate has increased in our center through the recent years (2008-2011). however, the survival rate of the patients who had survived 3 months after the transplantati...
Background and Purpose:Many children younger than 1 year old (about 4/000/000) are dying annually around the world, that three quarters of this mortality is related to neonatal period (4 weeks after birth). Several factors such as environmental conditions, social and genetic factors are causes of decreasing neonatal mortality. The aim of this study was to determine the neonatal survival rate ...
Background & Objectives: Golestan province in Iran has been known as a high risk area for esophageal cancer (EC). This study was conducted to assess the population-based survival rate in EC patients in Golestan province of Iran. Methods: In a longitudinal study, 223 EC patients registered in Golestan population-based cancer registry in 2007 and 2008 were recruited. Kaplan-Meier method was pe...
Abstract Background and Objectives Evaluation of cell survival is important in cellular studies and the result is decisive for the application of the test substance. Different methods are used to evaluate cell survival and the correlation between methods is important. Here, Vero cell line was used to evaluate the effects of HSV-1 virus on cell survival. Cell survival after HSV-1 infection usin...
To examine the role of inter-word spaces during reading, we used a gaze-contingent boundary paradigm to manipulate parafoveal preview (i.e., valid vs. invalid preview) in a normal text condition that contained spaces (e.g., "John decided to sell the table") and in an unsegmented text condition that contained random numbers instead of spaces (e.g.,"John4decided8to5sell9the7table"). Preview effec...
The present study examined whether adolescent friendships dissolve because of characteristics of friends, differences between friends, or both. Participants were 410 adolescents (201 boys, 209 girls; mean age = 13.20 years) who reported a total of 573 reciprocated friendships that originated in the seventh grade. We conducted discrete-time survival analyses, in which peer nominations and teache...
background : we conducted a retrospective analysis to investigate the clinical outcome of combined modality therapy using multiagent chemotherapy, nephrectomy, and radiotherapy in treatment of children with wilms' tumor. methods : this study was conducted on 91 cases of newly diagnosed wilms' tumor from january 2001 until february 2012. patients were categorized into two groups according to tre...
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