Table 1 The reference and test datasets analysed
Data type | Dataset | Purpose | Extracted from | How cohort extracted |
|---|---|---|---|---|
Reference data | Surgical data | -Identify cohort -Validate HID | Data quality analyses: UHB QEH (single site) Survival analyses: UHB (two sites) | Manually |
Clinical note review data | -Validate HID | Manually | ||
RTD (radiotherapy data) | -Identify cohort -Validate HID | By ICD-10 code | ||
Test data | RTD (radiotherapy data) | -To be validated (during survival analysesa) | By ICD-10 code | |
HID (inpatient and outpatient interactions) | -To be validated (during data quality and survival analysesa) | By NHS and hospital numbers (from reference) |