Table 1.

Baseline data analysis of people over 65 years old.

Factors	N (%) or mean ± SD
Age, y Male patients/female patients	74.08 ± 6.30 232 (64.44)/128 (35.56)
Smoking/not	50 (13.89)/310 (86.11)
Amiodarone/not	59 (16.39)/301 (83.61)
Statins/not	85 (23.61)/275 (76.39)
Height, cm	167.50 ± 8.65
Weight, kg	71.04 ± 12.38
BSA, m2	1.78 ± 0.19
Creatinine, µmol/L	79.71 ± 17.31
Warfarin dosage, mg/d	3.10 ± 0.91

BSA, body surface area; Quantitative traits are presented as mean ± SD.