Figure 1.

Hemoglobin levels in total hip arthroplasty using tranexamic acid. Boxplots showing median and interquartile ranges for hemoglobin levels in each group on each hospital day are shown. Both groups experienced a fall in hemoglobin following surgery and both groups had at least one patient who required transfusion on the first postoperative day. Despite the differences in starting hemoglobin, there was no significant difference between groups in rate of transfusion. THA: Total hip arthroplasty.