“…Furthermore, chronic pain is multi-faced, therefore the use of ADs may be utilized not only to address pain but also underlying or comorbid psychiatric symptoms such as depression, anxiety, or different sleep disorders (4,7). However, although ADs are frequently used in clinical practice, a recent Cochrane review could only include four studies that examined the use of ADs in pediatric chronic non-cancer pain and was therefore not able to report effect sizes (4). In addition, the small to moderate effect sizes reported in many pediatric AD trials in the common psychiatric disorders are potentially due to large placebo effects, with effect sizes as high as high as 1.57 (Hedges g) (8).…”