نتایج جستجو برای: epidemiological research
تعداد نتایج: 1461860 فیلتر نتایج به سال:
background: multiple sclerosis (ms) is the most common demyelinating and inflammatory disease of the central nevus system especially in young adults, but in a subgroup of patients the first clinical symptoms present after the age of 50. this clinical presentation is defined as late-onset multiple sclerosis (loms). the incidence and prevalence of ms including loms vary geographically. the aim of...
abstract: introduction: psychiatric disorder is a disease in which patients suffer from emotional problems that these are visible in all aspect of patient’s life. studies show that there is a major difference between the prevalence of this disease in different countries and also show that this disorder is increasing. the aim of this study is to find the possible relationship between psychiatric...
conclusions considering the high occurrence of the mortality and the injuries of the rtis compared to that of the other types of accidents, more attention to rtis in planning and interventions seems necessary. background road traffic injuries (rtis) are the leading cause of injuries and the second cause of mortality in iran. objectives the aim of this study was to investigate the epidemiologica...
there are few published reports on epidemiological studies concerning rubella in iran. the level of antibody in vaccinated individual’s declines gradually and the chances of infection in these people are much greater to those naturally immunized by infection. therefore, it seemed logical to determine the level of antibody in non vaccinated female students, aged from 18 to 26 years of isfahan un...
BACKGROUND This article of the International Epidemiological Association commissioned paper series stocktakes the population health and status of epidemiology in 21 of the 53 countries of the WHO European Region. By United Nations geographical classification, these countries belong to Eastern Europe, Western Asia and South-Central Asia. METHODS Published data were used to describe population ...
Data missing, which occurs for different reasons, is an unavoidable problem in epidemiological studies. It is quite widespread and, therefore, it is considered as a challenge in research design and data analysis by many methodologists. Complete case analysis is often used in studies with missing data however, this approach may result in inaccurate estimates and inferences due to bias associated...
OBJECTIVE To overview and evaluate the main findings, methodological shortcomings, and time trends of the recent psychiatric epidemiology studies in Turkey, as well as to provide areas prone for development in forthcoming research. METHOD PubMed and Turkish Psychiatry Index were screened to identify relevant studies. Any epidemiological study from 2000 to 2012 with a general population or uni...
hedging is a multi-purpose rhetorical strategy which is usually used in scientific arguments to secure ratification of claims, reduce the risk of negation, avoid conflict, manage disagreement and leave room for the audience to assess presented information. hedges are frequently used in research articles to mitigate the findings of research endeavors. the present research aims to investigate the...
background: the most common method of collecting data in any area of human health research is to apply a questionnaire. however, if extreme cautiousness is not taking into account while designing a questionnaire, the gathered data might be ineffective. therefore, the aim of the present article is to discuss some of the most important set of guidelines in designing a questionnaire. materials a...
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