نتایج جستجو برای: results of negative binomial models

تعداد نتایج: 21292001  

Journal: :gastroenterology and hepatology from bed to bench 0
alireza abadi department of community medicine & health, medical school, shahid beheshti university of medical sciences, tehran, iran asma pourhoseingholi department of biostatistics, school of paramedical sciences, shahid beheshti university of medical sciences, tehran, iran samira chaibakhsh department of biostatistics, school of paramedical sciences, shahid beheshti university of medical sciences, tehran, iran azadeh safaee department of control & prevention of diseases, deputy of health, shahid beheshti university of medical sciences, tehran, iran bijan moghimi-dehkordi department of control & prevention of diseases, deputy of health, shahid beheshti university of medical sciences, tehran, iran

aim : the purpose of this study is to analyze the cost of gerd and functional dyspepsia for investing its related factors. background : gastro-oesophageal reflux disease gerd and dyspepsia are the most common symptoms of gastrointestinal disorders. recent studies showed high prevalence and variety of clinical presentation of these two symptoms imposed enormous economic burden to the society. co...

Journal: :Health 2010
Alok Kumar Dwivedi Sada Nand Dwivedi Suryanarayana Deo Rakesh Shukla Elizabeth Kopras

Clinicians need to predict the number of involved nodes in breast cancer patients in order to ascertain severity, prognosis, and design subsequent treatment. The distribution of involved nodes often displays over-dispersion-a larger variability than expected. Until now, the negative binomial model has been used to describe this distribution assuming that over-dispersion is only due to unobserve...

Journal: :The Electronic Journal of Combinatorics 2012

پایان نامه :دانشگاه آزاد اسلامی - دانشگاه آزاد اسلامی واحد گرمسار - دانشکده ادبیات و علوم انسانی 1390

abstract the present study tried to investigate the effect of visual aids (films) on the development of the speech act of disagreement among iranian efl intermediate learners. to this end, the researcher selected 40 homogeneous intermediate learners based on their scores on oxford placement test. .the subjects then divided into control group and experimental group. both classes were tested by ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شیراز - دانشکده زبانهای خارجی 1389

the aim of the present study was to investigate the frequency and the type of discourse markers used in the argumentative and expository writings of iranian efl learners and the differences between these text features in the two essay genres. the study also aimed at examining the influence of the use of discourse markers on the participants’ writing quality. to this end the discourse markers us...

Journal: :Annals of Eugenics 1941

Journal: :SSRN Electronic Journal 2018

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه بیرجند - دانشکده ادبیات و علوم انسانی 1392

in new management approaches, in the organizations with inflexible structure, existing of red tapes and interruptions caused by limitations and also non-compliance with environmental changes, create demotivation among staff. with regard to the influence of job motivational potential and its relationship to the type of organizational structure( enabling and dissuasive), the goal of this research...

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