Figure 7From: Effectiveness of tranexamic acid in reducing blood loss in spinal surgery: a meta-analysis The postoperative partial thromboplastin time was significantly less in the TXA group compared with the placebo group (weighted mean difference, -1.59 [95% CI, -3.07 to -0.10]; p = 0.04). TXA = tranexamic acid, SD = standard deviation, IV = inverse variance, and df = degrees of freedom.Back to article page