Kelvin Chan

Dr. Kelvin Chan


Research Focus & Metrics

Academic Career Length

26Years (2001-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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1 January 2003
Verified
Journal Article
Closed access
KCKelvin Chan
Kelvin Chan
AOAmit Oza
Amit Oza
LSLillian L Siu
Lillian L Siu

1 August 2014 in Canadian Journal of Cardiology
Verified
Journal Article
Closed access
JTJudy Truong
Judy Truong
AYAndrew T. Yan
Andrew T. Yan
GCGemma Cramarossa
Gemma Cramarossa
KCKelvin Chan
Kelvin Chan

18 October 2016 in BMC Cancer
Verified
Journal Article
Open access
PDF file
COClaire de Oliveira
Claire de Oliveira
RPReka Pataky
Reka Pataky
KBKaren E. Bremner
Karen E. Bremner
JRJagadish Rangrej
Jagadish Rangrej
KCKelvin Chan
Kelvin Chan
MKMurray Krahn
Murray Krahn
Cancer is a major public health issue and represents a significant economic burden to health care systems worldwide. The objective of this analysis was to estimate phase-specific, 5-year and lifetime net costs for the 21 most prevalent cancer sites, and remaining tumour sites combined, in Ontario, Canada. We selected all adult patients diagnosed with a primary cancer between 1997 and 2007, with valid ICD-O site and histology codes, and who survived 30 days or more after diagnosis, from the Ontario Cancer Registry (N = 394,092). Patients were linked to treatment data from Cancer Care Ontario and administrative health care databases at the Institute for Clinical and Evaluative Sciences. Net costs (i.e., cost difference between patients and matched non-cancer control subjects) were estimated by phase of care and sex, and used to estimate 5-year and lifetime costs. Mean net costs of care (2009 CAD) were highest in the initial (6 months post-diagnosis) and terminal (12 months pre-death) phases, and lowest in the (3 months) pre-diagnosis and continuing phases of care. Phase-specific net costs were generally lowest for melanoma and highest for brain cancer. Mean 5-year net costs varied from less than $25,000 for melanoma, thyroid and testicular cancers to more than $60,000 for multiple myeloma and leukemia. Lifetime costs ranged from less than $55,000 for lung and liver cancers to over $110,000 for leukemia, multiple myeloma, lymphoma and breast cancer. Costs of cancer care are substantial and vary by cancer site, phase of care and time horizon analyzed. These cost estimates are valuable to decision makers to understand the economic burden of cancer care and may be useful inputs to researchers undertaking cancer-related economic evaluations.

8 March 2018 in International Journal of Cancer
Verified
Journal Article
Closed access
PDF file
KCKelvin Chan
Kelvin Chan
RSRonak Saluja
Ronak Saluja
KSKeemo Delos Santos
Keemo Delos Santos
KLKelly Lien
Kelly Lien
KSKeya Shah
Keya Shah
RWRebecca K.S. Wong
Rebecca K.S. Wong

1 January 2022 in JCO Oncology Practice
Verified
Journal Article
Open access
HSHsien Seow
Hsien Seow
LBLisa Barbera
Lisa Barbera
KMKimberlyn McGrail
Kimberlyn McGrail
FBFred Burge
Fred Burge
DGDawn Guthrie
Dawn Guthrie
RSRinku Sutradhar
Rinku Sutradhar
PURPOSE: This study aimed to investigate the impact of early versus not-early palliative care among cancer decedents on end-of-life health care costs.METHODS: Using linked administrative databases, we created a retrospective cohort of cancer decedents between 2004 and 2014 in Ontario, Canada. We identified those who received early palliative care (palliative care service used in the hospital or community 12 to 6 months before death [exposure]). We used propensity score matching to identify a control group of not-early palliative care, hard matched on age, sex, cancer type, and stage at diagnosis. We examined differences in average health system costs (including hospital, emergency department, physician, and home care costs) between groups in the last month of life.RESULTS: We identified 144,306 cancer decedents, of which 37% received early palliative care. After matching, we created 36,238 pairs of decedents who received early and not-early (control) palliative care; there were balanced distributions of age, sex, cancer type (24% lung cancer), and stage (25% stage III and IV). Overall, 56.3% of early group versus 66.7% of control group used inpatient care in the last month ( P < .001). Considering inpatient hospital costs in the last month of life, the early group used an average (±standard deviation) of $7,105 (±$10,710) versus the control group of $9,370 (±$13,685; P < .001). Overall average costs (±standard deviation) in the last month of life for patients in the early versus control group was $12,753 (±$10,868) versus $14,147 (±$14,288; P < .001).CONCLUSION: Receiving early palliative care reduced average health system costs in the last month of life, especially via avoided hospitalizations.

1 April 2013 in Current Oncology
Verified
Journal Article
Open access
VTVincent C Tam
Vincent C Tam
YKY.J. Ko
Y.J. Ko
NMN. Mittmann
N. Mittmann
MCM.C. Cheung
M.C. Cheung
KKK. Kumar
K. Kumar
KCKelvin Chan
Kelvin Chan
Purpose: Gemcitabine and capecitabine (gem-cap), gemcitabine and erlotinib (gem-e), and folfirinox (5-fluorouracil–leucovorin–irinotecan–oxaliplatin) are new treatment options for metastatic pancreatic cancer, but they are also more expensive and potentially more toxic than gemcitabine alone (gem). We conducted a cost-effectiveness analysis of these treatment options compared with gem. Methods: A Markov model was constructed to examine costs and outcomes of gem-cap, gem-e, folfirinox, and gem in patients with metastatic pancreatic cancer from the perspective of a government health care plan. Ontario health economic and costing data (2010 Canadian dollars) were used. Efficacy data for the treatments were obtained from the published literature. Resource utilization data were derived from a chart review of consecutive metastatic patients treated for pancreatic cancer at Princess Margaret Hospital, Toronto, Ontario, 2008–2009, and supplemented with data from the literature. Utilities were obtained by surveying medical oncologists across Canada using the EQ-5D. Incremental cost-effectiveness ratios (icers) were calculated. Results: The icers for gem-cap, gem-e, and folfirinox compared with gem were, respectively, CA$84,299, CA$153,631, and CA$133,184 per quality-adjusted life year (qaly). The model was driven mostly by drug acquisition costs. Given a willingness-to-pay (wtp) threshold greater than CA$130,000/qaly, folfirinox was most cost-effective treatment. When the wtp threshold was less than CA$80,000/qaly, gem alone was most cost-effective. The gem-e option was dominated by the other treatments. Conclusions: The most cost-effective treatment for metastatic pancreatic cancer depends on the societal wtp threshold. If the societal wtp threshold were to be relatively high or if drug costs were to be substantially reduced, folfirinox might be cost-effective.