Table 5.

Minor and Major Bleeds by BRI Category in All Patients and in the Subgroup with Atrial Fibrillation

BRI	Patients N	Patient- Years of Warfarin	Minor N (% per patient) (% per patient- year; 95% CI)	Major N (% per patient) (% per patient- year; 95% CI)
All patients
High	196	179	12 (6.1) (6.7; 3.4–11.7)	19 (9.7) (10.6; 6.4–16.6)
Intermediate	943	997	50 (5.3) (5.0; 3.7–6.6)	25 (2.6) (2.5; 1.6–3.7)
Low	130	132	11 (8.5) (8.3; 4.2–14.9)	1 (0.8) (0.8; 0–4.2)
Total	1269	1308	73 (5.8) (5.6; 4.4–7.0)	45 (3.5) (3.4; 2.5–4.6)
Atrial fibrillation
High	72	65	5 (6.9) (7.7; 2.5–18.0)	8 (11.1) (12.3; 5.3–24.3)
Intermediate	435	459	19 (4.4) (4.1; 2.5–6.5)	10 (2.3) (2.2; 1.0–4.0)
Low	36	32	3 (8.3) (9.4; 1.9–27.3)	0 (0) (0; 0–9.4)
Total	543	556	27 (5.0) (4.9; 3.2–7.1)	18 (3.3) (3.2; 1.9–5.1)

BRI, outpatient bleeding risk index; 95% CI, 95% confidence interval.