Data analysis:
The obtained data were entered into the Statistical Package for Social
Sciences (SPSS; version 14.0, SPSS Inc., Chicago, IL, USA). The
descriptive data were presented in mean, standard deviation, median,
Range for the continuous variable, as well as absolute numbers and
percentages for categorical variables. The chi-square test or Fisher’s
exact test was utilized to compare the categorical variables between the
groups. The continuous variables were compared using a t-test. Binary
logistic regression analysis was applied to estimate the odds ratio and
find the association between the assessed factors and thrombotic events
in the crude model and adjusted model for age and gender. A P-value of
less than 0.05 was considered as a significant level.