Current statistical methods for estimating nest survival rates assume that nests are identical in their propensity to succeed. However, there are several biological reasons to question this assumption. For example, experience of the nest builder, number of nest helpers, genetic fitness of individuals, and site effects may contribute to an inherent disparity between nests with respect to their d...

Background Ewing’s sarcoma family is a group of small round cells tumors. The aim of this study is to evaluate clinicopathologic characteristics and outcome of Ewing’s sarcoma in children and adolescents in Yazd, Iran. Materials and Methods All patients under 19 years with documented pathology of Ewing’s sarcoma family tumor who referred to Shahid Ramazanzadeh Radiotherapy center between 2...

background : stomach cancer is one of the most common malignancies worldwide. in iran, the mortality of stomach cancer is the first cause of death due to cancer in both sexes. this study was designed to estimate survival rate of stomach cancer at national level. methods : from the national cancer registry file, 3439 cases of stomach cancer that had telephone number and were diagnosed between ye...

background the number of patients with gastric cancer is growing worldwide. in iran (in 2009) of the 74067 new cases of cancer, 6886 were diagnosed as having gastric cancer. this study was conducted to investigate 5-year survival rate for gastric cancer in yazd province, central iran. methods in this descriptive study, the medical records of patients with gastric cancer were collected from the ...

objective: at present, treatment of edentulous areas with implant-supported prosthesis has greatly increased. the aim of this study was to assess the survival rate of implants with different diameters. methods: this retrospective study was conducted on 239 warfare victims presenting to qazi tabatabaie clinic during 2000-2010. a total of 1,649 implants were placed. the success criteria included ...

background: for adult all patients, the indications and appropriate timing of allogeneic hematopoietic stem cell transplantation (ahsct) continue to be debated. the primary aim of this single-institution study was to compare the results of our adult all patients that had been allografted with those reported in the current literature. subjects and methods: this study included 53 consecutive adul...

Background & Objectives: Colon cancer is currently of high incidence and mortality rate. Identifying the factors influencing its prognosis can be very beneficial to its clinical treatment. Recent studies have shown that lymph nodes ratio can be considered as an important prognostic factor. The aim of the present study is to investigate the effect of this factor on the prognosis of the ...

abstract         in the increasing population of the elderly in iran, so far no prospective health studies have been undertaken.   this study was conducted to identify the risk factors of survival time of the elderly of ages above 60 years. material and methods: individuals above 60 years old were recruited in the primary phase of the tehran lipid and glucose study (tlgs) during 1998-2001. they...

conclusions it was observed that the success and survival rate of maxillary molar immediate implant was relatively high and similar to those of conventional delayed implants. results immediate implants were most frequently used for incisor and premolar sites and there is very little data available on immediate implantation in the molar area. in this research, we reviewed all the existing papers...