Predictors of Receipt of Clinical Preventive Services in Adolescents and Adults with Down Syndrome Accessing Medicaid.

BACKGROUND: Persons with Down syndrome (DS) require preventive care that addresses their age-/gender- and syndrome-specific needs. Yet, adolescents and adults with DS do not receive these preventive care services as recommended. OBJECTIVE/HYPOTHESIS: To identify factors that predict receipt of age-/gender- and syndrome-specific preventive healthcare among adolescents and adults with DS. We hypothesized that more healthcare encounters and greater medical complexity would increase receipt of preventive care due to more opportunities to complete these activities. METHODS: Using Medicaid claims (2006-2010) for California, Colorado, Michigan, and Pennsylvania, we conducted a retrospective cohort study of adolescents and adults with DS (≥12 years old). We modeled receipt of both ≥1 wellness examination and ≥1 thyroid function test (TFT) in 2009-2010 as a function of receipt of those same healthcare activities in 2006-08, adjusting for demographics, key comorbidities, and medical complexity using multivariable logistic regression. RESULTS: In this cohort of 3487 adolescents and adults with DS accessing Medicaid, 17% received both ≥1 wellness examination and ≥1 TFT in 2006-2008, 15% in 2009-2010, and only 7% during both time periods. Despite medical complexity and frequent healthcare interactions, the best predictor of future receipt of these activities was past receipt. State of residence variably impacted receipt of these preventive activities. CONCLUSIONS: Although past receipt of wellness examination and TFT was the best predictor of future receipt of these activities, overall rates were quite low in this cohort of adolescents and adults with DS. Further work is needed to improve preventive healthcare delivery to this vulnerable population.