نتایج جستجو برای: confounding factors epidemiology

تعداد نتایج: 1171708  

Journal: :Experimental & clinical gastroenterology 2022

Gallbladder cancer (GBC) is a rare but highly malignant neoplasm. Most cases are discovered incidentally in patients undergoing evaluation for gallstone disease. It believed that an unfavorable prognosis associated with RZD late stage at diagnosis, which due to both the anatomical position of gallbladder and vagueness non-specificity symptoms, increases relevance studying highlighting this topi...

2013
Nora Schweitzer Arndt Vogel

Worldwide, hepatocellular carcinoma (HCC) is is the fifth most common cancer in men and the seventh in women (Figure 1). Because of impaired treatment options and late diagnosis in many cases, mortality is almost as high as the incidence rate (mortality: incidence rate 0.93). Worldwide, it is the third most frequent cause of tumour-related deaths. In the year 2008, 748,300 new HCCs and 695,900 ...

Journal: :The Medical journal of Australia 2002
Peter N Le Souëf

What we know: No one gene is a major cause of asthma. Some racial groups are more at risk of asthma than others. Early exposure to domestic animals appears to reduce the chance of developing asthma. Good hygiene may increase the likelihood of asthma. Impaired early airway function predisposes to asthma. What we need to know: How do several minor genetic factors combine to increase the risk of a...

Journal: :PLoS Medicine 2007
George Davey Smith Debbie A Lawlor Roger Harbord Nic Timpson Ian Day Shah Ebrahim

BACKGROUND In conventional epidemiology confounding of the exposure of interest with lifestyle or socioeconomic factors, and reverse causation whereby disease status influences exposure rather than vice versa, may invalidate causal interpretations of observed associations. Conversely, genetic variants should not be related to the confounding factors that distort associations in conventional obs...

احمدشیروانی , مرجان, باقری نسامی , معصومه, فخری , مولود, محسنی بندپی , محمدعلی,

Background and purpose: Low back pain (LBP) is a common and costly problem during pregnancy and assumes to be a part of normal pregnancy caused by normal physiological changes. Pregnancy-related LBP is one of the main reasons for disability, absence from work and responsible for huge direct and indirect economical impact. This article systematically reviews papers concerning the epidemi...

رحیمیان بوگر, اسحق, طباطبائی, سید موسی, نیک آئین, نگین,

Background and Objective: Smoking is a main factor for incidence and progression of the chronic diseases and their related adverse outcomes. The aim of this study was to compare the resiliency and psychological risk factors between the youth of smokers and non-smokers. Materials and Methods: In a cross-sectional descriptive plan, among the youth of Semnan town, 300 participants (153 smok...

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