نتایج جستجو برای: Cumulative Incidence
تعداد نتایج: 305163 فیلتر نتایج به سال:
b a c k g r o u n d & aim: in many studies, the survival of patients with chronic kidney disease who are treated with peritoneal dialysis technique has been considered, while this is possible in peritoneal dialysis patients to switch to another treatment. to achieve more accurate estimation of patient survival is necessary to examine all events. the purpose of this study is to estimate...
background: including multivariate survival data can be pointed competing risks data. there are various methods to analyze such data such as semi-parametric methods of cause-specific hazard function, and cumulative incidence function. the aim of this study was to deploy competing risks model to analyze the determinants of patients with liver cirrhosis. materials and methods: during the one-year...
background & aim: we aimed to describe a standard survival analysis, so that we can analyze some factors related to the time of occurrence of different types of reflux (unilateral-left, unilateralright, and bilateral) in children with antenatal hydronephrosis (anh) and to provide an approach taking competing risks into account. methods & materials: we used data of 193 children that was collecte...
Objective- Locomotor disorders are prevalent health problems in dairy herds that negatively affect milk production, reproduction performance and animal welfare. The ultimate cost of locomotor disorders in dairy cattle is substantially greater than treatment costs alone. As limited information is available on incidence of feet and leg disorders in Iran, the objective of this study was to determi...
Background: Given that COVID-19 continues to spread worldwide, has become a public health priority. This study aimed to investigate the correlation between the social capital and the epidemiological indicators of COVID-19. Methods: This survey is an ecological study, so all studied variables are aggregate variables. To collect the variables in the study, a data set was provided, which includ...
background: mastitis is an important health disorder in dairy herds which affects milk production, animal reproduction and production. objectives: the aim of this study was to estimate the cumulative incidence of mastitis in dairy herds in tehran province. methods: from 679 dairy herds in tehran province that have more than 50 animals, 32 dairy herds were selected randomly and animals that had...
Background and Objective: Breast cancer is one of the most common cancers in women worldwide. This study was conducted to analyze the factors related to survival of patients with breast cancer using two models of Cox proportional specific-cause and sub-distribution models (direct modeling of cumulative incidence). These patients were at the competitive risk of death from breast cancer and also ...
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