نتایج جستجو برای: cohort effect

تعداد نتایج: 1835023  

Journal: :journal of biostatistics and epidemiology 0
mohammad gholami-fesharaki assistant professor, department of biostatistics, school of medical sciences, tarbiat modarres university, tehran, iran anoshiravan kazemnejad professor, department of biostatistics, school of medical sciences, tarbiat modarres university, tehran, iran

the  main  assumptions  in  liner  mixed  model  are normality  and  independency  of  random  effect component.   unfortunately,   these   two  assumptions   might   be  unrealistic   in  some   situations. therefore, in this paper, we will discuss about the analysis of bayesian analysis of non-normal and non-independent mixed model using skew-normal/independent distributions, and finally, thi...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شهید چمران اهواز - دانشکده ادبیات و علوم انسانی 1390

abstract: advertisements are the most accessible type of authentic materials, and this is one reason why they are used more and more in english teaching classes. for this cause, studies in the field of advertisements are very widespread nowadays. for pun is one aspect which makes advertisements more interesting, it is used more than before in advertisements. use of puns makes an advertisement m...

Maximizing the social welfare considered as one of the main aspects the development process in society. This important is achieved through increased quality of life and welfare consumer the individual. In this context, quality of life and welfare consumer women as an important group of human resources in society, is affected by various factors. Despite women’s welfare patterns there is no...

Journal: :American journal of epidemiology 2003
Guan-Hua Huang Ronald Klein Barbara E K Klein Sandra C Tomany

The number of people in the United States with age-related maculopathy is increasing in recent years because of increasing longevity. However, it is possible that a birth cohort effect, due to different levels of exposure to risk factors, may explain changes in the prevalence of age-related maculopathy by age. In this report, the authors utilize data from the population-based Beaver Dam Eye Stu...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه پیام نور - دانشگاه پیام نور استان تهران - دانشکده علوم انسانی 1390

this study attempted to explore if teaching english collocations through two different modes of awareness-raising and input flooding has any possible differential effect on immediate retention as well as retention in a delayed assessment. it also compared the possible differential effect of teaching english collocations implicitly and explicitly on actively using the items in writing. m...

2016
Ana Luiza Gonçalves Soares Laura D. Howe Alicia Matijasevich Fernando C. Wehrmeister Ana M.B. Menezes Helen Gonçalves

Adverse childhood experiences (ACEs) can affect people's health and wellbeing not only at the time the ACE is experienced, but also later in life. The majority of studies on ACEs are carried out in high-income countries and little is known about its prevalence in low and middle-income countries. Thus, the aim of this study was to assess the prevalence of ACEs, associations between ACEs and soci...

2016
Joseph Murray Pedro C Hallal Gregore I Mielke Adrian Raine Fernando C Wehrmeister Luciana Anselmi Fernando C Barros

BACKGROUND Youth violence is a major global public health problem. Three UK and Swedish studies suggest that low resting heart rate predicts male youth violence, but this has not been tested in other social settings nor for females. METHODS A prospective, population-based birth cohort study was conducted in Pelotas, Brazil. Heart rate was measured using a wrist monitor at ages 11, 15 and 18 y...

2015
Chunhui Li Chuanhua Yu Peigang Wang

BACKGROUND Breast cancer is the most common cause of cancer-related death among women. In this paper, we studied the variations in the trends of Chinese female breast cancer mortality by age, period and cohort from 1990 to 2009. METHODS The mortality data were collected from the Institute for Health Metrics and Evaluation. An age-period-cohort model and Intrinsic Estimator were used to estima...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه علوم کشاورزی و منابع طبیعی گرگان - دانشکده تولیدات گیاهی و دامی 1393

خشکبار و آجیل از محصولات صادراتی کشور می باشند که کیفیت بالا و عاری از آلودگی بودن آن ها به آفات، مانند کنه های انباری اهمیت ویژه ای دارد. برای بررسی فون کنه های محصولات خشکبار و میوه های خشک در سه شهر مشهد، نیشابور و سبزوار در طول سال 93-1392 نمونه گیری هایی انجام شد. نمونه ها از محصولاتی شامل: توت خشک، آلو، گردو، انجیر خشک، هلو، تخمه هندوانه، تخمه کدو، کشمش، خرمای تازه، خرمای خشک، زردآلو، تخم...

ژورنال: پژوهش در پزشکی 2010
معقول3, نجمه, وزیری‌نژاد*, رضا, سجادی2، , محمد علی ,

Abstract Backgraound: In view of the increasing prevalence of diabetes, and the absence of a previous survey in the study population, the present study was done to assess the quality of life in diabetic patients. Methods: Two groups of diabetic (n=101) and healthy (n=123) subjects matched according to age, gender, educational status, social class, occupation and marital status were recruit...

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