The number of excess cases of people with a disease in a population that can be attributed to a particular risk factor. Population attributable risk is a joint function of relative risk, the prevalence of a risk factor in the population, and the absolute risk of disease.
Example: Roughly 135,000 people die each year from lung cancer in the United States. The relative risk of lung cancer in smokers is 10 to 1; one-third of the American population smokes, so 101,000 lung cancer deaths per year are attributable to smoking. Alternatively, there might have been 101,000 fewer deaths if no one smoked.
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Save Your Lungs And Never Have To Spend A Single Cent Of Ciggies Ever Again. According to a recent report from the U.S. government. Centers for Disease Control and Prevention, more than twenty percent of male and female adults in the U.S. smoke cigarettes, while more than eighty percent of them light up a cigarette daily.