Discontinuation and primary care visits in nonvalvular atrial fibrillation patients treated with apixaban or warfarin
2019
AIM: Nonvalvular atrial fibrillation (NVAF) requires long-term anticoagulation treatment, which may necessitate frequent primary care visits. MATERIALS & METHODS: NVAF patients initiating warfarin or apixaban in 2012-2017 were identified from linked primary (Clinical Practice Research Datalink) and secondary care (Hospital Episode Statistics) data. A propensity score matched Cox regression model compared discontinuation risk. Primary care visits were compared via negative binomial regression. RESULTS: A total of 2695 apixaban users were matched to warfarin patients. Discontinuation risk was lower with apixaban than warfarin (hazard ratio: 0.40; 95% CI: 0.35-0.46). Apixaban patients averaged 12.2 annual primary care visits, versus 17.1 for warfarin users (p < 0.001). CONCLUSION: Apixaban was associated with reduced rates of discontinuation and primary care visits compared with warfarin.
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