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.
Full Definition of DECADE. 1. : a group or set of 10: as a: a period of 10 years b: a division of the rosary that consists primarily of 10 Hail Marys. 2. : a ratio of 10 to 1: order of magnitude. The war lasted nearly a decade. 2  The bridge was built a decade ago. 3  The decade of the 1920s runs from January 1, 1920 to December 31, 1929. 4  the first decade of the 21st century.