Multi-source longitudinal patient-level data encryption process
US8275850B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 5, 2005 |
| Grant date | Sep 25, 2012 |
| Priority date | — |
| Expiry date | Feb 17, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG16H10/60
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Systems and processes for assembling de-identified patient healthcare data records in a longitudinal database are provided. The systems and processes may be implemented over multiple data suppliers and common database facilities while ensuring patient privacy. At the data supplier locations, patient-identifying attributes in the data records are placed in standard format and then doubly encrypted using a pair of encryption keys before transmission to a common database facility. The pair of encryption keys includes a key specific to the data supplier and a key specific to the common database facility. At the common database facility, the encryption specific to the data supplier is removed, so that multi-sourced data records have only the common database encryption. Without direct access to patient identifying-information, the encrypted data records are assigned dummy labels or tags by which the data records can be longitudinally linked in the database. The tags are assigned based on statistical matching of the values of a select set of encrypted data attributes with a reference database of tags and associated encrypted data attribute values.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.