Table 2. Number of cases of GI bleeding within each exposure risk period (Number of gastrointestinal bleeding = 1,713).

Variables	No Drug Exposure	Warfarin exposure	Dabigatran exposure
#of patients with the specified risk period	1215	293	1215
#of GI bleeding episodes unique to each of the risk period	1159	84	470
Mean individual risk period in days (Range)	448(101–632)	114(1–431)	159 (1–503)
Median individual risk period in days (IQR)	476 (356–555)	89 (43–153)	128 (50–241)

GI-Gastrointestinal, IQR-Interquartile range.