|Short description of Indicator||Percentage of patients treated with radiation at any time in the course of their illness, 2011 to 2017 by LHIN|
|Rationale for measurement||
|Evidence/references for rationale||
Medical evidence has shown that not using radiation treatment when it is indicated can lead to serious adverse outcomes, such as a higher chance that the cancer will return (recurrence) and reduced survival time.
|Calculations for the indicator||
Estimated using Multi-cohort Current Utilization Table (MCUT) method.
Reference: J. Zhang-Salomons and W.J. Mackillop, “Estimating the lifetime utilization rate of radiotherapy in cancer patients: The Multicohort Current Utilization Table (MCUT) method”, Computer Method and Programs in Biomedicine, 92, (2008) 99-108
|Standardized Rate Calculation||N/A|
|Time Frame||2011 to 2017|
|Geographic Scale||Provincial and by LHIN of residence|
Cancer cases diagnosed in Ontario as identified through the Ontario Cancer Registry (OCR).
Exclusions: Cases of in-situ diseases, non-malignant diseases, malignant skin cancers, and cases reported solely on the basis of death certificates were excluded. Multiple cancers diagnosed for the same patient on the same body site were represented by the first cancer diagnosis of the same site; Subsequent diagnoses on the same body site with different histology, different sub-site (e.g. different quadrants of the breast, different lobes of the lung) did not enter the denominator. The rationale is that these subsequent diagnoses would not be considered as new cases in clinical sense; previous radiation to the same body region could be a counter-indication to radiotherapy.
|Numerator description||Cancer cases, as defined in the above denominator description, who received radiation treatment for their disease at any time after diagnosis.|
|Considerations||The accuracy of the estimated utilization rate relies on the linkage rate of the clinical radiotherapy data to the cancer cases identified through the Ontario Cancer Registry. Caution should be exercised when interpreting the results when the case count is small, e.g. rectal cancer in the counties without an urban core.|
|Data availability & limitations||Because many patients residing in county Kenora travel to the neighboring province for treatment, the utilization rate for Kenora is not reportable.|