Table 1 Characteristics of included cohorts
| Country |
Cancer data source | Diagnosis years | Medication data source | Outcome data source |
End follow-up | Outcome |
|---|---|---|---|---|---|---|
|
Wales (SAIL databank) |
Welsh Cancer Intelligence and Surveillance Unit (National Cancer registry for Wales) | 2000 to 2016 |
Primary Care GP dataset (GP prescription records) | Annual District Death Extract | 2019 | Cancer-specific death |
|
Scotland (eDRIS) | Scottish Cancer Registry | 2009 to 2016 |
Prescribing Information System (dispensed medications) | National Records of Scotland Death Records | 2019 | Cancer-specific death |