Cumulative incidence at 100 days of venous or arterial thrombosis stratified for D-dimer levels. Cumulative incidence and 95% CIs (indicated by shaded areas) of arterial or venous thrombosis throughout 100-day follow-up, stratified for index D-dimer levels. The dashed red line represents high D-dimer levels (≥4 µg/mL), and the solid blue line indicates low to moderate D-dimer levels (<4 µg/mL).