In respect of non-valvular AF population, mean CHA2DS2-VASc score was 3.3 ± 1.8 with 81.8% of patients having CHA2DS2-VASc ≥ 2 and only 42.7% of 'CHA2DS2-VASc ≥ 2' patients did use OAC; the higher the CHA2DS2-VASc score was, the less patients used oral anticoagulant compared to antiplatelet; mean HAS-BLED score was 1.4 ± 0.9 and only 44% of patients with CHA2DS2-VASc ≥ 2 plus HAS-BLED ≤ 2 did use OAC.