Table 3

HR of stroke and secondary outcomes among patients with nonvalvular atrial fibrillation newly initiating DOACs after propensity score matching: primary analyses

PatientsEventsRate per 1,000 PYPatientsEventsRate per 1000 PYHR
Apixaban vs rivaroxaban: primary and secondary outcomes, intent to treat
OutcomeApixabanRivaroxabanaHR (95% CI)
Stroke18395612.4718395713.480.93 (0.64 to 1.34)
All-cause mortality*183728862.72183725960.811.03 (0.87 to 1.22)
Myocardial infarction (MI)1839245.281839245.630.95 (0.54 to 1.68)
Transient ischaemic attack (TIA)1839306.641839286.571.03 (0.61 to 1.72)
Major bleeding event183911726.72183918345.860.60 (0.47 to 0.75)
Composite angina/MI/stroke endpoint (AMS)18399721.9318399623.120.96 (0.72 to 1.27)
Apixaban vs rivaroxaban: primary outcome (stroke) among subgroups, intent to treat
SubgroupApixabanRivaroxabanaHR (95% CI)
Age <75 years621116.4962195.801.10 (0.46 to 2.66)
Age ≥75 years11724115.2411724116.500.94 (0.61 to 1.44)
Concomitant aspirin use4091413.1640955.042.54 (0.92 to 7.07)
No concomitant aspirin use13894112.3113893812.091.03 (0.66 to 1.60)
Prior warfarin use26369.83263814.270.69 (0.24 to 1.98)
No prior warfarin use15164612.3515163610.361.19 (0.77 to 1.85)
With diabetes4741714.764741513.821.08 (0.54 to 2.16)
Without diabetes13103711.6813103311.121.05 (0.66 to 1.68)
With heart failure189717.81189717.501.04 (0.37 to 2.97)
Without heart failure16115213.0216114311.671.13 (0.76 to 1.70)
CHA2DS2 VASc 0–137999.0637955.351.65 (0.55 to 4.92)
CHA2DS2 VASc 2–313124012.6713124515.450.82 (0.54 to 1.26)
CHA2DS2 VASc 4+6916.286916.580.91 (0.06 to 14.58)
Male11583311.5611583011.181.03 (0.63 to 1.69)
Female6501912.236502114.490.86 (0.46 to 1.60)
Analysis of secondary comparisons: primary outcome (stroke), intent to treat
OutcomeApixabanDOACs other than apixabanaHR (95% CI)
Stroke22766512.5722766814.160.90 (0.64 to 1.27)
OutcomeRivaroxabanDOACs other than rivaroxabanaHR (95% CI)
Stroke19855912.8519856513.360.96 (0.67 to 1.36)
  • PS model accounts for age, gender, CHA2DS2 VASc score, year of treatment initiation and the following diagnoses and treatments in baseline: non-major bleeding events, anaemia, diabetes, hypertension, heart failure, osteoporosis/hip fracture, malignant neoplasm, acute kidney injury, chronic kidney disease, asthma/COPD, dementia, aspirin, antiplatelets other than aspirin, warfarin, antimeric preparations, NSAIDs, opioids, SSRIs, antidepressants other than SSRIs, antiepileptics, antipsychotics, benzodiazepines, lipid lowering drugs, insulin, antihyperglycemics other than insulins, antihypertensives, antiarrhythmics, nitrates cardiac vasodilators, cardiac stimulants, gastrointestinal protective agents, bisphosphonates and other agents affecting bone structure, systemic corticosteroids, antineoplastics, systemic antibiotics, systemic antivirals, vaccines/immunoglobulins.

  • DOACs comprised apixaban, rivaroxaban, edoxaban, dabigatran.

  • In analysis of stroke, MI, TIA, major bleeding events, and AMS, patients were followed until occurrence of outcome, death, end of patient registration or end of study period (December 2020).

  • *In analysis of all-cause mortality, patients were followed until occurrence of outcome (death), end of study period (December/2020) or the later date of end of patient registration and any recorded death within 90 days of end of patient registration. Propensity score matched sample size for analysis of all-cause mortality differs from sample size in analysis of other outcomes because of differences in censoring criteria, which impact a small number of patients' eligibility for inclusion in analysis at the start of follow-up.

  • aHR, adjusted HR; PS, propensity score; PY, person years.