نتایج جستجو برای: analytical and survey
تعداد نتایج: 16902158 فیلتر نتایج به سال:
The aim of this study was to evaluate the students' attitudes towards cultural activities and institutions in the university to improve it. This study was based on a survey method along with self-assessment questionnaire and stratified random sampling among 350 university students in the first semester of the academic year 1392-1391. For the validity and reliability of the questionnaire, face v...
In the United States today, we know a great deal about the burden of high blood pressure (BP) and the inadequacy of its prevention and control at the national level.1 The National Health and Nutrition Examination Survey (NHANES), created through authorizing legislation of the National Health Survey Act of 1956, collects directly measured and selfreported data relevant to biological risk factors...
The purpose of this research was to investigate the associations between misperception of body weight and sociodemographic factors such as food stamp participation status, income, education, and race/ethnicity. National Health and Nutrition Examination Survey (NHANES) data from 1999-2004 and multivariate logistic regression are used to estimate how sociodemographic factors are associated with (...
Although the prevalence of chronic HCV is lower in children than adults, an estimated 5 million children worldwide have active HCV infection (Gower, 2014). Data from the National Health and Nutrition Examination Survey (NHANES) collected between 2003 and 2010 indicates that 0.2% of 6to 11-year-olds (31,000 children) and 0.4% of 12to 19-year-olds (101,000 adolescents) in the US are chronically i...
This report presents a detailed description of the sample design for the Third National Health and Nutrition Examination Survey, 1988-94, including a brief description of research that led to the choice of the final design. The National Health and Nutrition Examination Survey (NHANES) is one of the major surveys of the National Center for Health Statistics, Centers for Disease Control. Informat...
It is possible to use different methods to weight National Health and Nutrition Examination Survey (NHANES) data. Typically when weighting NHANES data we use a weighting class approach of predefined cells based on a limited number of variables. However, there are model based alternatives that allow for more flexibility in calculating the statistical weights. This flexibility is important becaus...
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