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. 2021 Apr 19;181(6):1–9. doi: 10.1001/jamainternmed.2021.1197

Table 2. Outcomes of DOAC vs DOAC Plus ASA.

Outcome No. per 100 patient-years (95% CI) P value
DOAC (n = 1047) DOAC+ASA (n = 1047)
New thrombosis 2.30 (1.98-2.59) 2.50 (2.20-2.83) .80
Ischemic/embolic stroke 0.90 (0.71-1.08) 0.70 (0.55-0.90) .31
TIA 0.20 (0.10-0.27) 0.10 (0.05-0.20) .58
PE 0.20 (0.14-0.33) 0.20 (0.09-0.26) .67
DVT 0.40 (0.28-0.53) 0.90 (0.70-1.07) .07
MI 0.10 (0.05-0.20) 0.10 (0.02-0.12) .51
New bleed 26.00 (25.05-27.06) 31.60 (30.54-32.75) .009
Major 3.59 (3.23-3.98) 4.95 (4.52-5.41) .09
Fatal 0.06 (0.02-0.13) 0.05 (0.02-0.12) .82
Intracranial or intraspinal 0.39 (0.28-0.53) 0.33 (0.23-0.46) .75
Life threatening 1.05 (0.86-1.27) 1.42 (1.20-1.67) .38
Nonmajor 21.70 (20.77-22.60) 26.10 (25.14-27.15) .02
ED visit 11.50 (10.84-12.18) 13.80 (13.05-14.52) .14
For bleeding 10.40 (9.77-11.04) 13.00 (12.31-13.74) .08
For clotting 1.30 (1.06-1.51) 0.80 (0.65-1.02) .12
Hospitalization 6.50 (6.03-7.04) 9.10 (8.51-9.70) .02
For bleeding 5.30 (4.87-5.78) 8.20 (7.62-8.75) .006
For clotting 1.20 (1.01-1.46) 0.90 (0.75-1.14) .31
Death 3.40 (3.02-3.75) 3.80 (3.39-4.16) .76

Abbreviations: ASA, acetylsalicylic acid or aspirin; DOAC, direct oral anticoagulant; DVT, deep vein thrombosis; ED, emergency department; MI, myocardial infarction; PE, pulmonary embolism; TIA, transient ischemic attack.