Compared with patients who avoided these painkillers, those who took an NSAID had a 2.4-fold higher risk of a major bleed and those who took aspirin had a 1.5-fold higher risk. Even though [this warning about major bleeds with NSAIDS or aspirin] is on the warfarin label. . .
5 years. A decade means 10 years, so to find out how many years are  in half of a decade you would simply divide 10 by 2, which is 5.
decâ¢ade. 1. a period of ten years. 2. a period of ten years beginning with a year whose last digit is zero: the decade of the 1990s. 3. a set or series of ten.