Methods The data were obtained from the Virginia All-Payers Claim Database. The patient's
ZIP code was classified on the basis of the Education Demographic and Geographic
Estimates Program. 8 Infants 0 to 11 months of age with at least 30 days of continuous
enrollment between 2016 to 2019 were included. We excluded infants who had been
diagnosed with a Pediatric Complex Chronic Condition at any point in their patient record. 9
We converted other exclusion criteria used in earlier claims-based studies, 10 such as …