Post-licensure rapid immunization safety monitoring program (PRISM) data characterization

Area of Science:

• Public Health
• Pharmacovigilance
• Health Informatics

Background:

• The Post-Licensure Rapid Immunization Safety Monitoring (PRISM) program is part of the FDA's Mini-Sentinel project.
• PRISM utilizes electronic health information for active medical product safety monitoring.
• The study aimed to characterize PRISM's claims-based database for vaccine safety surveillance.

Purpose of the Study:

• To assess the surveillance capabilities of the PRISM program's claims-based distributed database.
• To characterize the data available for vaccine safety monitoring within PRISM.
• To evaluate the completeness and utility of PRISM data for vaccine safety.

Main Methods:

• Characterized vaccine exposures within the PRISM database.
• Quantified additional data gained by integrating immunization registries.
• Compared PRISM vaccination coverage estimates with other data sources (NIS, HEDIS).
• Generated rates of potential health outcomes using ICD-9 codes and standardized algorithms.

Main Results:

• Claims data adequately captured most routine infant, child, adolescent, and adult vaccinations.
• Immunization registries added 5-9% data, with higher percentages for specific vaccines (e.g., Hepatitis B).
• PRISM coverage estimates were similar to but lower than NIS and HEDIS.
• Observed rates of potential health outcomes were generally higher than literature rates for clinically confirmed cases.

Conclusions:

• PRISM's data on vaccine exposures are sufficiently complete for effective safety monitoring.
• The program's data on health outcomes support robust safety surveillance.
• PRISM demonstrates strong potential for active vaccine safety monitoring using electronic health data.