Commit Graph

2 Commits

Author SHA1 Message Date
Andrew Charlwood 5b1569ed5c fix: correct patient identifier for GP diagnosis lookup (Task 3.3)
Two critical fixes for the indication-based pathway feature:

1. clean_snomed_code() now handles scientific notation (e.g., "1.06e+16")
   - CSV export from pandas/Excel converts large SNOMED codes to scientific notation
   - Without this fix, codes like "10629311000119108" were stored as "1.06e+16"
   - Now properly converts to full integer strings

2. batch_lookup_indication_groups() now uses PseudoNHSNoLinked instead of PersonKey
   - PersonKey is LocalPatientID (provider-specific like "J188448")
   - PseudoNHSNoLinked is the pseudonymised NHS number that matches PatientPseudonym in GP records
   - Without this fix, 0% of patients matched GP records
   - Test shows ~20% match rate for ADALIMUMAB patients with correct identifier
2026-02-05 15:49:24 +00:00
Andrew Charlwood 6d68b5eaa5 feat: add SNOMED mapping loader script (Task 1.2)
- Create data_processing/load_snomed_mapping.py with:
  - migrate_drug_snomed_mapping() for CSV to SQLite migration
  - get_drug_snomed_mapping_counts() for statistics
  - verify_drug_snomed_mapping_migration() for validation
  - clean_snomed_code() to remove trailing .0 from SNOMED codes
  - CLI interface: python -m data_processing.load_snomed_mapping

- Loaded 144,056 mappings from enriched CSV:
  - 707 unique drugs
  - 187 unique search terms
  - 21,265 unique SNOMED codes
2026-02-05 14:10:36 +00:00