RÉSUMÉ
OBJECTIVE: To measure prescription use intensity and regional variation of psychotropic and 2 important nonpsychotropic drug groups among children with autism spectrum disorders (ASDs) compared with children in the general population. STUDY DESIGN: Cross-sectional study of ambulatory prescription fills from Maine, Vermont, and New Hampshire all-payer administrative data, 2007-2010. RESULTS: Overall there were 13,100 children diagnosed with ASD (34,584 person years [PYs]) and 936,721 (1.7 million PYs) without ASD diagnosis. The overall prescription fill rate was 16.6 per PY in children with ASD and 4.1 per PY in the general population. Psychotropic use among children with ASDs was 9-fold the general population rate (7.80 vs 0.85 fills per PY); these children comprised 2.0% of the pediatric population but received 15.6% of psychotropics. Nonpsychotropic drug use was also higher in the population with ASD, particularly the youngest: among those under age 3 years, antibiotic use was 2-fold and antacid use nearly 5-fold the general population rate (3.2 vs 1.4 and 1.0 vs 0.2 per PY, respectively). Among children with ASDs, prescription use varied substantially across hospital service areas, as much as 3-fold for antacids and alpha agonists, more than 4-fold for benzodiazepines (5th to 95th percentile). CONCLUSIONS: The overall psychotropic and nonpsychotropic prescription intensity among children with ASDs is characterized by broad regional variation, suggesting diverse provider responses to pharmacotherapeutic uncertainty. This variation highlights a need for more research, practice-based learning, and shared decision making with caregivers surrounding therapy for children with ASDs.