Routine Vaccination Rates in Teens and Adults Continue to Lag Behind Pre-Pandemic Levels, Follow-up Analysis Shows - Seite 2

Study Methodology

The methodology employed is consistent with the previously reported analysis. Avalere analyzed changes in administration of ACIP-recommended adult (≥19 years of age) and adolescent (7-18 years of age) vaccines using pre-adjudicated medical benefit Medicare fee-for-service (FFS) claims and the Inovalon MORE² Registry, a large scale, real-world dataset consisting of medical, pharmacy, and lab claims and clinical data on more than 338 million de-identified patients.

Specifically, vaccines were identified using Current Procedural Terminology (CPT) and Healthcare Common Procedure Coding System (HCPCS) for vaccine products, general vaccine administration HCPCS codes and National Drug Codes (NDCs) when product codes were not available. Avalere compared vaccine claims in 2020 and 2021 to vaccine claims in 2019 to identify the potential impact of the COVID-19 pandemic on vaccine administration.

Claims for nearly all vaccines covered in this analysis are observed in the Medicare Part B data. While Part D claims were not included in the analysis of FFS Medicare claims, some claims for Part D vaccines that were administered in the provider setting may have been captured. Due to variability across states in billing requirements for vaccines provided through the Vaccines for Children program, this analysis may not fully capture teen vaccine utilization in the Managed Medicaid market.

To estimate missed doses at a national level, Avalere used a market-specific, rate-based methodology to extrapolate the number of vaccine claims to the national population. The 2019 claims-based vaccination rate applied to the national sample was considered the baseline for vaccination volumes, and missed doses were estimated as a difference between the baseline and the 2020 and 2021 claims-based rate applied to the 2020 and 2021 national population estimates.

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