Figure 4.

Forest plot of acupuncture efficacy in reducing preoperative anxiety. (a) STAI acupuncture versus sham acupuncture. (b) VAS acupuncture versus control groups. (c) Side effect acupuncture versus sham acupuncture. The term “STAIC” in part (a) indicates the State Anxiety Subscale of the State-Trait Anxiety Inventory in children. The term “events” in part (c) indicates the number of patients who reported adverse events including PONV. “Weight” refers to the contribution of each study to the side effects total.