نتایج جستجو برای: survival analysis
تعداد نتایج: 3074356 فیلتر نتایج به سال:
Background and Objectives: Colorectal cancer is the fourth leading cause of cancer death worldwide. Annually 1430000 cases would be diagnosed and half of these people would die of the disease. In Iran, colorectal cancer is the fifth common cancer among men and is the thirdamong women. This study was designed to estimate survival rates for patients with colorectal cancer and related factors. ...
patients and methods this retrospective cohort study included 405 renal transplant patients from kerman university of medical sciences hospital, kerman, iran from 2004 to 2010. kaplan-meier method was used to estimate survival rates of patients, and time-dependent cox regression was used to examine the effect of allograft failure on patient survival. results during 4.06 years (median) of follow...
Background: Due to limited clinical data in pediatric-type sarcomas (rhabdomyosarcoma, Ewing's sarcoma, PNET, and desmoplastic small round-cell tumor), the aim of this study was to evaluate the demographic characteristics and identifying prognostic factors for survival. Materials and Methods: We retrospectively reviewed 110 patients with pediatric-type sarcomas. Overall and disease free surviva...
Background and Objectives: Given the advances in treatment and use of new therapies in kidney transplantation, there is always a need to evaluate the survival of graft and patient and to investigate the effect of new therapies. Therefore, the purpose of this study was to assess the survival rate of kidney graft and patient in patients transplanted in Shahid Hasheminejad hospital during 2008-201...
Background & Objectives: Although Cox regression is commonly used to detect relationships between patient survival and demographic/clinical variables, there are situations where parametric models can yield more accurate results. The objective of this study was to compare two survival regression methods, namely Cox regression and parametric models, in patients with gastric carcinoma registered a...
Background and Aim: Hemodialysis is the most common procedure which is performed for end-stage renal disease (ESRD) patients. Furthermore, vascular access is an important aspect of hemodialysis treatment, provided for patients with ESRD. There are different reports on the prevalence and survival of vascular access. In this study we report the prevalence and survival probability of vascular ...
Background: Thalassemia major (TM) is a severe disease and the most common anemia worldwide. The survival time of the disease and its risk factors are of importance for physicians. The present study was conducted to apply the semi-parametric Cox PH model and use parametric proportional hazards (PH) and accelerated failure time (AFT) models to identify the risk factors related to survival of TM ...
background: there currently is a lack of knowledge about the long-term survival of patients with beta thalassemia (bt), particularly in regions with low incidence of the disease. the aim of the present study was to determine the survival rate of the patients with bt major and the factors associated with the survival time. methods: this retrospective cohort study was performed in hamadan provinc...
abstract: introduction: colorectal cancer (crc) is one of the most common cancers in the world. during the past decades, survival of colorectal cancer patients has improved worldwide, however, it is not clear what factors have contributed to this development. this study was designed to evaluate the prognostic impact of a wide spectrum of pathologic parameters on survival rate in patients with...
Background and Aim: In recent decades, the survival rates of the children with cancer have improved significantly and their five-year survival rates have reached 80%, but there are still many concerns about the survival of adolescents and young people. Methods and Materials: In this retrospective study, the data of 310 children and adults with leukemia in Kurdistan Province were extracted from...
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