نتایج جستجو برای: size risk

تعداد نتایج: 1463539  

Journal: :iranian journal of public health 0
morteza hajihosseini javad faradmal abdolazim sadighi-pashaki

background: breast cancer (bc) is the second most commonly diagnosed cancer after lung cancer. survival of bc patients is affected by intermediate events. this study was aimed to investigate the disease course of primary non-metastatic bc patients with first recurrence of the tumor (frt) as the intermediate event using the illness- death model. methods: this retrospective cohort study was condu...

Journal: :Pathology 2023

Introduction: Gallbladder carcinoma is the most common biliary tract carcinoma. A subset develops in polypoidal precursors that are detectable by ultrasound but not reliably distinguishable from non-neoplastic polyps. Most guidelines recommend cholecystectomy for polyps ≥ 10mm based on a higher rate of neoplasia, however, disagreements exist with management recommendations smaller incidentally ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی اصفهان - دانشکده ریاضی 1390

the main objective in sampling is to select a sample from a population in order to estimate some unknown population parameter, usually a total or a mean of some interesting variable. a simple way to take a sample of size n is to let all the possible samples have the same probability of being selected. this is called simple random sampling and then all units have the same probability of being ch...

Journal: :North American Actuarial Journal 2020

Journal: :Proceedings of the Royal Society B: Biological Sciences 2008

Journal: :Proceedings of the Royal Society of London. Series B: Biological Sciences 2004

Journal: :Journal of the American Society of Nephrology 1998

Journal: :Managerial and Decision Economics 2001

2011
Sarah Blickenstorfer Heinzpeter Schwermer Monika Engels Martin Reist Marcus G Doherr Daniela C Hadorn

BACKGROUND In order to optimise the cost-effectiveness of active surveillance to substantiate freedom from disease, a new approach using targeted sampling of farms was developed and applied on the example of infectious bovine rhinotracheitis (IBR) and enzootic bovine leucosis (EBL) in Switzerland. Relevant risk factors (RF) for the introduction of IBR and EBL into Swiss cattle farms were identi...

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