Figure 8From: Effectiveness of tranexamic acid in reducing blood loss in spinal surgery: a meta-analysis The outcome of partial thromboplastin time at 24 h postoperative was similar between the TXA group and the placebo group (weighted mean difference, -0.51 [95% CI, -2.71 to 1.68]; p = 0.65). TXA = tranexamic acid, SD = standard deviation, IV = inverse variance, and df = degrees of freedom.Back to article page