Complexity of prevalence and incidence measures in headache research
نویسندگان
چکیده
منابع مشابه
Complexity of prevalence and incidence measures in headache research.
Defining disease status in population-based studies is often challenging, particularly when disease status changes between active and non-active stages. Migraine is a typical example of a fluctuating disease as its frequency and clinical features can vary considerably during one’s lifespan (1). In general, the data show that the vast majority of patients have an onset of their migraine in child...
متن کاملthe effect of task complexity on efl learners’ written task performance in terms of accuracy and complexity
هدف اصلی این تحقیق بررسی تاثیر افزایش میزان پیچیدگی تکالیف مکالمه محور بر دقت و صحت و پیچیدگی عملکرد نوشتاری زبان آموزان می باشد. بدین منظور، 50 نفر از دانش آموزان دختر در رده ی سنی 15 الی 18 سال درسطح pre-intermediate از طریق petو vhs تست به عنوان شرکت کنندگان در تحقیق انتخاب شدند و به دو گروه آزمایشی و کنترل بصورت اتفاقی تقسیم شدند. اعضای گروه آزمایشی دو تکلیف ساده و پیچیده را طی 2 جلسه انجام...
the investigation of research articles in applied linguistics: convergence and divergence in iranian elt context
چکیده ندارد.
: metadiscourse in introduction sections of applied linguistics and physics research articles: exploring variation in frequency and type
abstract in written mode of language, metadiscourse markers are used commonly to help writers in general and academic writers in particular to produce coherent and professional texts. the purpose of the present study was to compare introduction sections of applied linguistics and physics articles regarding their use of interactive and interactional metadiscourse markers based on the model pro...
15 صفحه اولan investigation of accuracy and complexity across different proficiency levels in written narrative task
abstract this quasi-experimental study was aimed at examining the impact of storyline complexity on the grammatical accuracy and complexity of advanced and intermediate efl learners. a total of 65 advanced and intermediate efl learners were selected from iran language institute (ili). an intact group including 35 intermediate participants and another intact group with 30 advanced participants ...
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ژورنال
عنوان ژورنال: Cephalalgia
سال: 2012
ISSN: 0333-1024,1468-2982
DOI: 10.1177/0333102412437388