Abstract
Background/Aims: Determine (1) frequency of attention-deficit hyperactivity disorder (ADHD) treatment and (2) growth responses in growth hormone (GH)-treated children who are receiving ADHD medication versus GH alone. Methods: Prepubertal children with idiopathic short stature (ISS) or GH deficiency (IGHD) enrolled in Genentech’s National Cooperative Growth Study. ADHD treatment was determined by documentation of psycho-stimulant medication use at enrollment. Results: ADHD medication use increased from 0.8% (7/850) in 1985 to 5.8% (752/12,113) in 2005. First-year GH treatment response for ADHD + IGHD versus IGHD: 8.5 ± 2.0 vs. 9.4 ± 2.6 cm/year, but when adjusted for age, sex, and enrollment body mass index, the difference is clinically insignificant (–0.4 cm/year). First-year growth was similar in all ISS: 8.1 ± 1.9 versus 8.6 ± 2.1 cm/year (ADHD + ISS vs. ISS, an adjusted –0.2-cm/year difference). Conclusion: Increasing numbers of GH-treated children are taking ADHD medications and their growth responses during the first year of GH therapy are similar to those not taking ADHD medications.
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