نتایج جستجو برای: case control study

تعداد نتایج: 5686763  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شیخ بهایی - دانشکده زبانهای خارجی 1392

the purpose of this study was to investigate the impact of blended learning and multimedia softwares on iranian efl students vocabulary learning. in addition, the present study tried to examine the extent to which multimedia softwares can be applied into efl classes in iran. it also attempted to find out students attitudes toward using these softwares. to this end, 87 iranian efl learners at el...

Objective The aim of this study is to evaluate the relationship between phytoestrogen intake with endometriosis risk. MaterialsAndMethods A case-control study was conducted on 78 women with a laparoscopically confirmed diagnosis of endometriosis and on 78 normal pelvis women (as the control group). Common dietary intake was collected by a validated 147-item semi-quantitative FFQ. Calculation ty...

پایان نامه :دانشگاه آزاد اسلامی - دانشگاه آزاد اسلامی واحد گرمسار - دانشکده علوم انسانی 1391

the present study was conducted to investigate the effect of implicit focus on form through input flooding and the effect of noticing, explicit focus on form on linguistic accuracy. to fulfill the purpose of the study, 86 iranian pre-intermediate efl learners of one of the language institutes were chosen by means of administering ket as the homogeneity test. these learners were pretested throug...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تبریز 1390

the present research study attempted to find out the extent to which two pre-task activities of “glossary of unknown vocabulary items” and “content related support” assisted efl language learners with their performance on listening comprehension questions across two different proficiency levels (low and high). data for this study were obtained from a total of 120 language learners, female and m...

پایان نامه :موسسه آموزش عالی غیردولتی رودکی تنکابن - دانشکده ادبیات و علوم انسانی 1394

this study was conducted to investigate the effect of favorite-text on iranian intermediate efl learners’ vocabulary development. sixty learners from nour-al-mahdi english institute participated in the present study. having been homogenized by oxford placement test (opt), they were randomly assigned into two groups of 30, control and experimental. then both groups sat for a pre-test which was a...

Journal: :iranian journal of public health 0
jalal poorolajal mehrdokht mazdeh mohammad saatchi elaheh talebi ghane azam biderafsh bahar lotfi

background: hamadan province is one of the high-risk regions in iran for multiple sclerosis (ms). a majority of the epidemiological studies conducted in iran addressing ms are descriptive. this study was conducted to assess ms and its associated risk factors in hamadan province, the west of iran . methods: this case-control study compared 100 patients with ms (case group) and 100 patients with ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شیراز 1356

بمنظور بررسی اعتیاد به تریاک بعنوان یکی از عوامل مستعد کننده برای ابتلاء سکته قلبی روش بررسی گذشته نگر (retrospective case-control stydy) در دو بیمارستان سعدی و نمازی که هر دو وابسته بدانشگاه شیراز هستند انجامگرفت . جمعیت مورد مطالعه شامل 200 مورد سکته قلبی و 200 نفر شاهد بود (که شامل 51 زن و 149 مرد در هر گروه بوده است) که بر حسب جنس ، سن (سال +3) و بیمارستان مقایسه (match) شدند. سن، جنس و اعت...

Journal: :international journal of pediatrics 0
nahid karamzad vice-chancellery for food and drug, maragheh university of medical sciences, maragheh, iran. saeid safiri department of epidemiology and biostatistics, school of public health, tehran university of medical sciences, tehran, iran & road traffic injury research center, department of statistics & epidemiology, tabriz university of medical sciences, tabriz, iran. samira amiri student research committee, school of nutrition, tabriz university of medical sciences, tabriz, iran naeema syedi school of pharmacy and medical sciences, sansom institute for health research, university of south australia, south australia, australia. mehrangiz ebrahimi-mameghani nutrition research center, school of nutrition, tabriz university of medical sciences, tabriz, iran. mahmood moosazadeh health sciences research center, faculty of health, mazandaran university of medical sciences, sari, iran.

background: ninety-five percent of low birth weight infants are born in developing countries. this study was aimed to assess the predictors of low birth in east azerbaijan, north-west province of iran. materials and methods: the study was conducted through a hospital based case–control design involving 49 women delivering low birth weight infants and 98 delivering normal weight infants. the dat...

Journal: :international journal of preventive medicine 0
parastoo golshiri somayeh rasooli mohammadhasan emami arash najimi

background: the prevalence of colorectal cancer (crc) is rapidly increasing in iran. it holds the most prevalent cancer after skin, breast, and gastric cancers among the iranian population. the current study was designed to investigate the effects of leisure time, occupational and household physical activity as well as exercise on the risk of crc in the iranian population. methods: in this popu...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه مازندران 1388

some researches made in the field of agency problem issue, deal with the role of control systems regarding owners and managers. in this research the relationship between the two control mechanisms, namely the voluntary disclosure (external control mechanism) and outside directors (internal control mechanism), which are reductive of agency problems, has been studied. for this reason, a sample ...

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