Table 1.
Discover data elements by level of aggregation
| Data element | Event level | Patient level | Organisation level | Data coding system |
|---|---|---|---|---|
| Demographics | Y | n/a | ||
| GP or other primary care consultation | Y | Read codes | ||
| Clinical tests ordered in primary care | Y | Read codes | ||
| Referrals to secondary care | Y | Read codes | ||
| Practice staffing | Y | n/a | ||
| Social care contacts | Y | Unique to this data set | ||
| Community mental health | Y | Unique to this data set | ||
| Emergency department visits | Y | Unique to England | ||
| Hospital stays | Y | ICD10 for diagnoses; UK’s OPCS for procedures | ||
| Hospital outpatient appointments | Y | ICD10 for diagnoses; UK’s OPCS for procedures | ||
| Death registration | Y | ICD10 for causes | ||
| Geographical location (postcode) | Y | Y | UK postcode |