Use of Web-Based Reporting Application to Monitor and Improve Data Quality of Immunization Information Systems

Background:
Ensuring quality data is entered into immunization registry is an important part of data quality assessments after a provider begins using the registry. Since 2005, the Los Angeles-Orange County Immunization Network (LINK) began developing a web-based software application to improve data quality assessments and follow-up with providers.

Objectives:
Develop a web-based application to identify data quality issues and training gaps after providers begin using the immunization registry. Custom reports are generated to identify relevant information such as usage of registry by providers and individual users, patient record status, incomplete patient records, usage of inventory and reminder recall functions, frequency of duplicate records and inactive providers.

Methods:
Immunization registry staff worked together to establish and define parameters for quality assurance indicators to be programmed into the web-based application, which generates custom ASPX page reports in real-time data. Providers receive data quality reports at the 1-month, 3-month, 12-month, then annual intervals. Reports are mailed to providers or reviewed during site visits. Further training and assistance are provided to clinics that need more support.

Results:
To date, the Los Angeles-Orange County Immunization Network has generated more than 1500 data quality reports using the web-based application for more than 600 immunization providers using the registry, including public health centers, hospitals, community clinics, private providers, school-based clinics and WIC agencies. Based on leading indicators, 72% of providers using the registry demonstrated improved data quality from the 3-month to 1-year mark, while 69% demonstrated improved data quality from 1-year to 2-year mark, showing sustainable improvements.

Conclusions:
A web-based software application is an useful tool for registries to evaluate data quality issues and identify provider training needs. Reports are easy to update and customize to monitor provider and registry level indicators. Immunization providers find this tool useful in helping them reduce data entry errors.