Figure 2.

(a, b) Abdominal AC score categories in patients with different doses and durations of warfarin according to age. Comparison between the low-dose group (warfarin dose < 3 mg) and high-dose group (warfarin dose ≥ 3 mg) in different age groups (a). Comparison between the short-duration group (warfarin duration < 6 months) and long-duration group (warfarin duration ≥ 6 months) in different age groups (b). (c) Correlation between dose-time-response of warfarin and AC score in atrial fibrillation patients. Each circle referred to one patient. (d, e) AC score categories in patients with different doses and durations of warfarin according to age. Comparison between different aortic calcium score groups in patients with age < 65 years (d). Comparison between different aortic calcium score groups in patients with age ≥ 65 years (e).