نتایج جستجو برای: relative survival
تعداد نتایج: 705858 فیلتر نتایج به سال:
Relative survival, the survival analogue of excess mortality, is the method of choice for estimating patient survival using data collected by populationbased cancer registries. The relative survival ratio is typically estimated from life tables as the ratio of the observed survival of the patients (where all deaths are considered events) to the expected survival of a comparable group from the g...
OBJECTIVES This article presents five-year relative survival rates for prostate, breast, colorectal and lung cancer diagnosed in 1992. Provincial variations are also examined. DATA SOURCES Data are from the Canadian Cancer Registry, the National Cancer Incidence Reporting System, the Canadian Mortality Data Base, and life tables. ANALYTICAL TECHNIQUES Analysis was conducted using the maximu...
Lactococcosis has been defined as acute septicaemia, which causes economic losses in farmed fish, especially in rainbow trout. This study was done to evaluate the effects of the essential oils of Satureja bachtiarica and Nigella sativa on the efficacy of lactococcosis vaccine in rainbow trout. A total number of 270 fishes with a mean weight of 120 g were obtained; they were randomly divided int...
BACKGROUND Providing up-to-date estimates of cancer patient survival rates is an important task of cancer registries. A few years ago, a new method of survival analysis, denoted period analysis, was proposed to enhance the recency of long-term survival estimates. The aim of this paper is to provide a comprehensive empirical evaluation of the use of this method. METHODS Using data from the nat...
BACKGROUND AND PURPOSE Octogenarians were not included in the major trials of carotid endarterectomy. Concern has been expressed about the role of carotid endarterectomy in this age group. This concern is based in part on uncertainty about the long-term survival of elderly patients after carotid endarterectomy. The aim of the present study was to assess relative survival in those patients >or=8...
BACKGROUND In Europe skin melanoma (SM) survival has increased over time. The aims were to evaluate recent trends and differences between countries and regions of Europe. METHODS Relative survival (RS) estimates and geographical comparisons were based on 241,485 patients aged 15years and over with a diagnosis of invasive SM in Europe (2000-2007). Survival time trends during 1999-2007 were est...
Radical prostatectomy in elderly patients is controversial. To identify very old candidates for radical prostatectomy with the highest probability of long-term survival, we studied 47 consecutive men who underwent radical prostatectomy between 1992 and 2005 at an age of 75 years or older. A heuristic approach was used to search for subgroups with particularly high long-term survival. Several tw...
In this study a bio-economic model was used for a flock with 195 breeding ewes and 20 rams to determine economic values of important traits in Zel sheep of Golestan including litter size, pre-weaning survival, post-weaning survival, ewe survival, birth weight, weaning weight, yearling weight, ewe mature weight, dressing percentage, conception rate and wool weight. In this model, fixed environme...
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