Gastrointestinal Hemorrhage in Warfarin Anticoagulated Patients: Incidence, Risk Factor, Management, and Outcome

Table 6

Multivariate analysis of risk factors of gastrointestinal bleeding in patients taking warfarin.

Variable	Relative risk	95% confidence interval	𝑃 value
Age > 65 yrs	2.5	1.2–5.5	0.02
Mean INR* > 2.1	2.1	1.0–4.2	0.04
History of GIB†	5.1	1.9–13.5	0.001
Cirrhosis	6.9	2.0–24.5	0.003

∗INR: international normalization ratio.
†GIB: gastrointestinal bleeding.