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Tip of the Day:December 7

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sasCommunity Tip of the Day

Because of leap years, it is not possible to accurately calculate a person's colloquial age on a particular date ("Age at Last Birthday") using just simple arithmetic operations. However, SAS date functions can be employed to get a correct result. The formula is

 age = floor((intck('month',birth,somedate) - (day(somedate) < day(birth))) / 12);

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