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IMMUNIZATION INFORMATION SYSTEMS PATIENT-LEVEL DE-DUPLICATION BEST PRACTICES. June 25, 2013
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Feb. 2, 2016
[PDF-976.31 KB]
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Description:Last Reviewed Feb 2016
Patient-level de-duplication (also called patient matching, patient de-duplication, or patient identity management) is the process of finding and removing redundant patient records from a database. Patient matching and patient de-duplication are essential data processing capabilities for Immunization Information Systems (IIS). These capabilities ensure that updates and queries apply only to the correct patient record and prevent fragmented and duplicate information from being added to an individual’s health records. The inability to consistently determine which records represent the same patient and errors in combining the data contained in a patient’s record negatively affect the overall data quality, usefulness, and credibility of public health immunization record keeping.
This document, a result of a CDC-sponsored project, is designed to be read by programmatic, technical, and operational experts who are involved in creating or maintaining an IIS. The document intends to bridge the gap between technical and program staff so they can have a mutual understanding of the issue of patient-level de-duplication and target actions to address these recommendations.
Best practice guidelines on patient-level de-duplication, documented within this report, will positively affect immunization registries by encouraging common de-duplication practices. This will thereby improve overall data quality and usefulness of registry information. The best practices guidelines are also technology-neutral and foster collaboration and communication amongst IIS professionals.
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de-duplication.pdf
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