نتایج جستجو برای: case control study
تعداد نتایج: 5686763 فیلتر نتایج به سال:
آموزش واژه با بهره گیری از یادگیری تلفیقی و نرم افزارهای چند رسانه ای در کلاس های آموزش زبان انگلیسی
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...
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...
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...
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...
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 ...
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...
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...
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...
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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