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Table 1 Summary of issues and options for on-going linkage

From: Technical challenges of providing record linkage services for research

Operational feature

Options

On-going linkage

- Link to most recent record in group vs. link to all records

 

- Best-link matching vs. merging groups

Linkage automation

- Spectrum from fully automated to only the grouping process automated

Links stored

- No history stored

 

- Snapshots stored

 

- Full history stored within linkage map

Handling different linkage scenarios

- Only on-going linkage

- Manual processes for project based linkage

 

- Access to on-going linkage system used for project based linkage

 

- Build system which can handle multiple scenarios

Amended and deleted records

- No handling of amended and deleted records

 

- Amended records: Changing personal identifiers only vs deleting and re-linking

 

- Deleted records: Simple removal, or using pair information to reconstitute groups