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Current Oncology
Volume 21
Issue 5
10.3747/co.21.2162
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Current Oncology is published by MDPI from Volume 28 Issue 1 (2021). Previous articles were published by another publisher in Open Access under a CC-BY (or CC-BY-NC-ND) licence, and they are hosted by MDPI on mdpi.com as a courtesy and upon agreement with Multimed Inc..
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Short Communication

Population-Based Utilization of Radiation Therapy by a Canadian Breast Cancer Cohort

by
N. Mittmann
1,2,3,*,
S.J. Seung
1,
N. Liu
4,
J. Porter
4,
R. Saskin
4,
J.S. Hoch
3,5,
W.K. Evans
6,
N.B. Leighl
7,
M. Trudeau
8 and
C.C. Earle
4,8
1
Health Outcomes and Pharmacoeconomics (HOPE) Research Centre, Sunnybrook Health Sciences Centre, Toronto, ON, Canada
2
Department of Pharmacology, University of Toronto, Toronto, ON, Canada
3
Applied Research in Cancer Control, Cancer Care Ontario, Toronto, ON, Canada
4
Institute for Clinical Evaluative Sciences, Toronto, ON, Canada
5
Keenan Research Centre of the Li Ka Shing Knowledge Institute, St. Michael’s Hospital, Toronto, ON, Canada
6
McMaster University, Hamilton, ON, Canada
7
Princess Margaret Cancer Centre, University Health Network, Toronto, ON, Canada
8
Odette Cancer Centre, Sunnybrook Health Sciences Centre, Toronto, ON, Canada
*
Author to whom correspondence should be addressed.
Curr. Oncol. 2014, 21(5), 715-717; https://doi.org/10.3747/co.21.2162
Submission received: 3 July 2014 / Revised: 7 August 2014 / Accepted: 9 September 2014 / Published: 1 October 2014

Abstract

We examined trends in radiation therapy (RT) utilization by a population-based breast cancer cohort in Ontario. The provincial cancer registry provided a breast cancer cohort based on diagnosis dates from April 1, 2005, to March 31, 2010. Staging information was also available. The cohort was then linked, by encrypted health card number, to linkable administrative datasets, including RT utilization. The average age in the identified female breast cancer cohort (n = 39,656) was 61.6 ± 14.0 years. Almost two thirds of the patients (n = 25,225) received RT, and staging information was available for 22,988 patients (9541 stage I, 8516 stage II, 4050 stage III, and 881 stage IV). The average number of RT courses received by the patients was 1.4 ± 0.7 for stage I, 1.8 ± 1.1 for stage II, 2.5 ± 1.3 for stage III, and 2.8 ± 2.4 for stage IV. The ratio of conventional RT to intensity-modulated RT was 70.9%:16.6% for stage I, 71.6%:11.3% for stage II, 74.6%:4.6% for stage III, and 89.6%:2.2% for stage IV. From 2005 to 2010, almost two thirds of a Canadian female breast cancer cohort received RT, and the average number of courses increased with disease severity. A similar trend was observed with the type of RT (use of conventional RT increased with disease severity). The next step is to apply unit costs to the number of fractions and to obtain RT planning and radiation therapist times.
Keywords: radiation; breast cancer; utilization radiation; breast cancer; utilization

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MDPI and ACS Style

Mittmann, N.; Seung, S.J.; Liu, N.; Porter, J.; Saskin, R.; Hoch, J.S.; Evans, W.K.; Leighl, N.B.; Trudeau, M.; Earle, C.C. Population-Based Utilization of Radiation Therapy by a Canadian Breast Cancer Cohort. Curr. Oncol. 2014, 21, 715-717. https://doi.org/10.3747/co.21.2162

AMA Style

Mittmann N, Seung SJ, Liu N, Porter J, Saskin R, Hoch JS, Evans WK, Leighl NB, Trudeau M, Earle CC. Population-Based Utilization of Radiation Therapy by a Canadian Breast Cancer Cohort. Current Oncology. 2014; 21(5):715-717. https://doi.org/10.3747/co.21.2162

Chicago/Turabian Style

Mittmann, N., S.J. Seung, N. Liu, J. Porter, R. Saskin, J.S. Hoch, W.K. Evans, N.B. Leighl, M. Trudeau, and C.C. Earle. 2014. "Population-Based Utilization of Radiation Therapy by a Canadian Breast Cancer Cohort" Current Oncology 21, no. 5: 715-717. https://doi.org/10.3747/co.21.2162

APA Style

Mittmann, N., Seung, S. J., Liu, N., Porter, J., Saskin, R., Hoch, J. S., Evans, W. K., Leighl, N. B., Trudeau, M., & Earle, C. C. (2014). Population-Based Utilization of Radiation Therapy by a Canadian Breast Cancer Cohort. Current Oncology, 21(5), 715-717. https://doi.org/10.3747/co.21.2162

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