Table 1

Data sources and case selection criteria for identifying cohort

Data sourcesCase selection criteria
Residential fire event
1. Computer Aided Dispatch system (CAD)All persons residing at an NSW residential address attended by FRNSW or ambulance for a fire event
2. FRNSW Australian Incident Reporting SystemAs above
Ambulance use
3. CAD systemAll NSW residents that used the service with: principle reason ‘house fire’
4. Patient Healthcare RecordAll NSW residents that used the service with: main condition ‘burns’ or ‘smoke inhalation’
5. Electronic medical recordAll NSW residents that used the service with: case nature of ‘burns’, ‘smoke inhalation’.
Emergency department (ED) use
6. NSW ED Data CollectionAll NSW residents with ED record with diagnosis codes denoting burns and smoke inhalation: ICD-9-CM (940–949 or 508.2) or ICD-10-AM codes (T20–T31 or T59) or SNOMED CT Codes (217574009, 217303001, 217301004, 217304007, 217305008, 217297008, 217307000, 217250007, 217245001, 217264007, 217289001, 125666000, 423123007, 424784002, 276466000, 288509005, 284196006, 72998004, 37645002, 84677008, 52405000, 6055000, 10132008, 403192003, 425656005, 219356008, 262582004, 447157009, 11868005, 80183002, 211879003, 426936004).
In-patient hospital and specialist burns outpatient clinic use
7. NSW Admitted Patient Data CollectionAll NSW residents with hospital record with ICD-10-AM principal diagnosis code denoting burn (T20-T31) or smoke inhalation (T59) and an external cause code denoting exposure to uncontrolled/controlled fire in building or structure (X00 and X02).
8. NSW Burn Injury Service RegistryAll NSW residents admitted to specialist Burns Unit or Burns Outpatient Clinic with mechanism category of ‘flame’, ‘clothing/bedding/curtains caught alight’ or ‘house fire’.
Deaths
9. NSW RBDM and COD-URFAll NSW residents that had a register of death with ICD-10 principal diagnosis code denoting burn (T20-T31) or smoke inhalation (T59) or an external cause code denoting exposure to uncontrolled/controlled fire in building or structure (X00 and X02).
  • COD-URF, Cause of Death Unit Record File; FRNSW, Fire and Rescue NSW; ICD-9-CM, International Statistical Classification of Diseases and Related Problems, Ninth Revision, Clinical Modification; NSW, New South Wales; RBDM, Registry of Birth, Deaths and Marriages; SNOMED CT, Systematised Nomenclature of Medicine, Clinical Terms.