Fig. 4

Incremental cost of comorbid anxiety and/or depression in ADHD relative to ADHD alone in a simulated health plan. ADHD, attention-deficit/hyperactivity disorder; FDA, Food and Drug Administration; US, United States. aA hypothetical value. bBased on the National Survey of Children’s Health data, 2018 [ 2 ]. cBased on Kessler et al., 2012 [ 3 ]. dBased on results in the current study