Sample size and power based on the population attributable fraction.
نویسندگان
چکیده
منابع مشابه
Population Attributable Fraction of Hypertension Associated with Obesity in Iran
Introduction: Prevalence of obesity has been increased in Iran over the recent decades. Little is known about fraction of hypertension attributable to obesity in Iran. This study aimed to determine the population attributable fraction (PAF) of hypertension due to obesity across different provinces of Iran. Materials & Method: Data on prevalence of hypertension, were extracted from Iranian Mi...
متن کاملWhat Does the Population Attributable Fraction Mean?
Recent controversy over the disagreement of population attributable fraction estimates for the obesity-total mortality relation has made the concept of attributable fraction visible in both scientific and popular news. Most of the attention in writings on the attributable fraction has focused on technical matters of estimation and on ensuring a causal relationship between exposure and outcome. ...
متن کاملAttributable risk, population attributable risk, and population attributable fraction of death associated with hypertension in a biracial population.
In 1961, blood pressure was measured in the 40-69-year-old segment of the population of Evans County, Georgia. Mortality was monitored for up to ten years. The relationship found between hypertension and mortality is characterized in this report by four parameters: attributable risk, prevalence, population attributable risk, and population attributable fraction. Attributable risk of death, a me...
متن کاملThe population attributable fraction and confounding: buyer beware.
Unfortunately, we got the wrong answer. The correct answer is 21%; we over-estimated the PAF by nearly 30%. What did we do wrong? We followed a wellestablished, but incorrect, tradition of putting adjusted RRs in the crude (unadjusted) PAF formula. The crude formula is only appropriate when the impact of exposure (i.e. ‡ 5 kg gain) on the development of disease (i.e. diabetes) is not confounded...
متن کاملPopulation Attributable Fraction of Ischemic Heart Disease Associated to Hypertension in the Middle East and North Africa
Background: Ischemic Heart Disease has been increasing in the Middle East and North Africa. Hypertension is an important modifiable risk factor of IHD and play an important role in the epidemic of IHD. Hypertension is responsible for about 45% of IHD mortality and affects more than one billion people around the world. Objective: This study aims to quantify the population attributable fraction...
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ژورنال
عنوان ژورنال: American Journal of Public Health
سال: 1989
ISSN: 0090-0036,1541-0048
DOI: 10.2105/ajph.79.9.1289