The healthcare system in Sweden is publicly funded and aims to provide equal access to care irrespective of socioeconomic status. This includes ensuring equity in drug treatment. Socioeconomic disparities have been shown to influence patient management and health outcomes in certain Swedish populations. The Swedish Board of Health and Welfare has stated that the prescription of new drugs, which are more expensive than generic standard of care drugs, might be influenced by patients' socioeconomic status.

To evaluate the association between socioeconomic factors and use of a DOAC (rivaroxaban, dabigatran, or apixaban) or standard of care (warfarin) in patients with NVAF in Sweden.

Inclusion Criteria:

• Patients aged ≥18 years in Sweden with a diagnosis of NVAF (identified using International Classification of Diseases, version 10 [ICD-10]) codes in the National Patient Register) between 1 December 2011 and 31 December 2014 and with a first dispensed prescription for either a DOAC or warfarin following their NVAF diagnosis.

Exclusion Criteria:

• Patients with a dispensed prescription for a DOAC or warfarin prior to the index date (the date of first DOAC/warfarin purchase designated the index date)
• Patients with a dispensed prescription for more than one anticoagulant at index date.
• Patients with valvular atrial fibrillation