tokens: The annual incidence of warfarin - related bleeding at Brigham and Women ' s Hospital increased from 0 . 97 / 1 , 000 patient admissions in the first time period ( January 1995 to October 1998 ) to 1 . 19 / 1 , 000 patient admissions in the second time period ( November 1998 to August 2002 ) of this study .