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. 2019 Aug 17;8(8):1240. doi: 10.3390/jcm8081240

Table 2.

Clinically relevant bleeding events in orally anticoagulated patients versus the remainder of the study cohort.

Variable n (%) All Patients (n = 328) No OAC (n = 116) OAC (n = 212) p-Value NOAC (n = 74) VKA (n = 138) p-Value
Bleeding events, n (%) 54 (16.5) 5 (4.3) 49 (23.1) <0.001 16 (21.6) 33 (23.9) <0.001
Cerebral bleeding, n (%) 4 (1.2) 0 (0.0) 4 (1.9) 0.137 0 (0.0) 4 (2.9) 0.062
Gastrointestinal bleeding, n (%) 21 (6.4) 3 (2.6) 18 (8.5) 0.037 6 (8.1) 12 (8.7) 0.111
Urogenital bleeding, n (%) 5 (1.5) 1 (0.9) 4 (1.9) 0.469 1 (1.4) 3 (2.2) 0.690
Hematoma bleeding, n (%) 8 (2.4) 0 (0.0) 8 (3.8) 0.034 5 (6.8) 3 (2.2) 0.013
Nasal bleeding, n (%) 14 (4.3) 1 (0.9) 13 (6.1) 0.024 3 (4.1) 10 (7.2) 0.043
Other bleeding, n (%) 2 (0.6) 0 (0.0) 2 (0.9) 0.294 1 (1.4) 1 (0.7) 0.493

OAC, oral anticoagulation; NOAC, non-vitamin K oral anticoagulant; VKA, vitamin K antagonist Clinically relevant bleeding events were defined in accordance to the definition of major bleeding recommended by the International Society on Thrombosis and Haemostasis [22]. Major bleeding was defined as fatal bleeding and/or bleeding into a critical organ (intracranial, intraocular, retroperitoneal, intraarticular, pericardial, or intramuscular) and/or clinically relevant bleeding with a drop in hemoglobin ≥ 2 g/dL or requiring to transfusion. Values are given as total numbers (n) and percent (%). Bold indicates p < 0.05.