Figure 5From: Effectiveness of tranexamic acid in reducing blood loss in spinal surgery: a meta-analysis The ratio of patients who accepted the blood transfusion was significantly less in the TXA group compared with the placebo group (weighted mean difference, 0.56 [95% CI, 0.36 to 0.87]; p = 0.01). TXA = tranexamic acid, SD = standard deviation, IV = inverse variance, and df = degrees of freedom.Back to article page