The methodology is described in the standard operating procedure CAS-SOP #4.6 Linking treatment tables - chemotherapy, tumour resections and radiotherapy.
Analytical notes:
Other care represents the group of patients who had no record of chemotherapy, tumour resection, or radiotherapy in the time frame assessed. This may include patients who received other treatments (such as hormonal therapy or management of symptoms), treatment outside of the time frame assessed, treatment in a private setting, or there may be data missing from the datasets used.
The patient's Charlson comorbidity score was derived from Hospital Episodes Statistics (HES) and Cancer Registry data combined, and looks back at the time period between 27 months to 3 months before the patient's cancer diagnosis.
Tumour resections have been defined for 29 malignant sites and 2 benign sites.
