Statistical analysis
THROMBOEMBOLISM
We reported continuous variables as mean and standard deviation (SD) if normally distributed or median and interquartile range (IQR) if non-normally distributed; categorical variables were reported as frequencies and percentage.To ensure balance of baseline characteristics across subjects with and without history of thromboembolism, and according to the allocation to mAFA intervention or usual care, we calculated a subgroup-balancing propensity score (PS) [A 2-sided 