Investigate the compliance of oral anticoagulants in Chinese NVAF patients and find out the causes, so as to provide basis for formulating effective measures to improve the compliance of oral anticoagulants.

1. The general information about these patients was recorded such as gender, age, smoking history, drinking history, heart failure, hypertension, diabetes, coronary heart disease, stroke history, TIA history, peripheral vascular disease, etc. CHA2DS2-VASc score and HAS-BLED score were recorded.
2. Medication information and follow-up information was collected.For the patients included in the study, the medication records of oral anticoagulants (outpatient, emergency, hospitalization), adverse reactions, anticoagulant use history, drug withdrawal or dressing change, disease changes, etc. within three years were recorded by referring to the patient's medical records.

Inclusion Criteria:

NVAF; CHA2DS2-VASc≥2（femal≥3）; After starting the medication, the duration of continuous medication was more than 3 months

Exclusion Criteria:

The patients had the records of anticoagulants in other hospitals; Patients lost to follow-up; Patients who do not need long-term anticoagulants after successful radiofrequency ablation or left atrial appendage occlusion. The follow-up time was 3 years or the following conditions occurred: the patient's condition changed and no longer used oral anticoagulants or died, the follow-up was stopped.

Through the hospital information system (HIS), the information of patients using warfarin, dabigatran and rivaroxaban during 2016.1-2-2021.1 was retrieved