aspirin
However, in younger patients, with a mean age of 65        years, the absolute reduction in stroke rate with warfarin compared with aspirin        was low (5.5 per 1,000 person-years) compared with an older group (15 per 1,000       person-years).
However, in younger patients, with a mean age of 65        years, the absolute  @PREDICAT$  in  @OBJECT$  rate with warfarin compared with  @SUBJECT$         was low (5.5 per 1,000 person-years) compared with an older group (15 per 1,000       person-years).