Fig. 1

Trends in the mean total units of RBC, FFP, platelets, FFP-to-RBC ratio, and platelet-to-RBC ratio used for massive transfusion in Japan from 2011 to 2020. The mean total units of RBCs, FFP, platelets were calculated using the units administered within the first 2 days of hospitalization. In the box plot, the horizontal line indicates the median, and the upper-most and lower-most borders of the box denote the 75th and 25th percentiles, respectively. The whiskers above and below the box mark the 90th and 10th percentiles, respectively. The points beyond the whiskers are outliers beyond the 90th percentile. RBC: red blood cell; FFP: fresh frozen plasma