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Number of days/years gained or lost

 

A measure of the efficacy of a treatment or habit in terms of increase or decrease in life expectancy. For instance, 30 years or smoking one or two packs of cigarettes a day results in an average loss of 2, 250 days, or about six years of life. In another example, a Dutch analysis of the famous Framingham study quantifies the loss of life expectancy from being overweight