Research Topics
| Murray D KrahnSummaryAffiliation: University of Toronto Country: Canada Publications
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Detail Information
Publications
Health-state utilities in a prisoner population: a cross-sectional surveyChristopher A K Y Chong
Section of General Internal Medicine, Lakeridge Health Oshawa, Canada
Health Qual Life Outcomes 7:78. 2009..Health-state utilities for prisoners have not been described...
Healthcare costs associated with prostate cancer: estimates from a population-based studyMurray D Krahn
Department of Medicine, University of Toronto, Toronto, Canada
BJU Int 105:338-46. 2010..Study Type - Health Economic (multiway sensitivity analyses) Level of Evidence 2b...
The next step in guideline development: incorporating patient preferencesMurray Krahn
Toronto Health Economics and Technology Assessment Collaborative, Toronto General Research Institute, and University of Toronto, Toronto, Ontario, Canada
JAMA 300:436-8. 2008
30-day mortality and major complications after radical prostatectomy: influence of age and comorbidityShabbir M H Alibhai
Division of General Internal Medicine and Clinical Epidemiology, University Health Network, Toronto, Canada
J Natl Cancer Inst 97:1525-32. 2005..Prior studies have suggested an increased risk of short-term complications among older men who underwent radical prostatectomy, but these studies did not adjust for comorbidity...
Do older men benefit from curative therapy of localized prostate cancer?Shabbir M H Alibhai
University Health Network, Room ENG 233, 200 Elizabeth St, Toronto, Ontario, Canada M5G 2C4
J Clin Oncol 21:3318-27. 2003..We estimated life expectancy (LE) and quality-adjusted life expectancy (QALE) associated with available treatments for localized prostate cancer in men aged >/= 65 years, adjusting for Gleason score, patient preferences, and comorbidity...
Is there an optimal comorbidity index for prostate cancer?Shabbir M H Alibhai
Division of General Internal Medicine and Clinical Epidemiology, University Health Network, Toronto, Ontario, Canada
Cancer 112:1043-50. 2008..Comorbidity is an important consideration in oncology practice, particularly among older patients. Although a variety of comorbidity indices have been employed in research studies, it is unclear whether any one index is preferred...
An unadjusted NNT was a moderately good predictor of health benefitChristopher A K Y Chong
Department of Medicine, University of Toronto, Toronto, Ontario, Canada
J Clin Epidemiol 59:224-33. 2006..5 QALYs), an NNT <or=5 had a specificity of 77%. CONCLUSION: Using NNT thresholds of <or=5 and >15 to rule in and out therapies with large QALY gains may provide general guidance regarding the magnitude of health benefit...
Is there age bias in the treatment of localized prostate carcinoma?Shabbir M H Alibhai
Division of General Internal Medicine and Clinical Epidemiology, University Health Network, Toronto, Ontario, Canada
Cancer 100:72-81. 2004..Previous studies have evaluated the influence of age and comorbidity, but to the authors' knowledge not RLE, on actual treatment decisions...
Continued undertreatment of older men with localized prostate cancerKevin L Schwartz
University of Toronto, School of Medicine, Toronto, Ontario, Canada
Urology 62:860-5. 2003..Many of these patients with at least moderate-grade disease may benefit from potentially curative therapy (radical prostatectomy or radiotherapy)...
The association between patient age and prostate cancer stage and grade at diagnosisShabbir M H Alibhai
Division of General Internal Medicine and Clinical Epidemiology, University Health Network, 200 Elizabeth Street, Toronto, Ontario M50 2C4, Canada
BJU Int 94:303-6. 2004..To investigate the association of age with prostate cancer stage and grade, as the latter factors at the time of diagnosis influence management and prognosis, with some studies suggesting that they may change as a function of patient age...
Management of solitary 1 cm to 2 cm liver nodules in patients with compensated cirrhosis: a decision analysisKaren E Bremner
Toronto General Research Institute, Toronto General Hospital, University Health Network, Toronto, Ontario, Canada
Can J Gastroenterol 21:491-500. 2007..Alternative strategies are immediate treatment or observation until disease progression occurs...
Development and validation of a utility weighting function for the patient-oriented prostate utility scale (PORPUS)George Tomlinson
Department of Medicine, University of Toronto, Toronto, Ontario, Canada
Med Decis Making 32:11-30. 2012..In this study, we developed a scoring system to allow indirect calculation of utilities from the PORPUS...
Sustained responders have better quality of life and productivity compared with treatment failures long after antiviral therapy for hepatitis CAva A John-Baptiste
Department of Health Policy, Management and Evaluation, University of Toronto, Toronto General Hospital, EN13 239, 200 Elizabeth Street, Toronto, ON M5G 2C4, Canada
Am J Gastroenterol 104:2439-48. 2009..We sought to compare the health status of patients with a sustained response to antiviral therapy for hepatitis C virus (HCV) infection with that of treatment failures, using health-related quality of life and preference (utility) measures...
Natural history of hepatitis C virus infection in HIV-infected individuals and the impact of HIV in the era of highly active antiretroviral therapy: a meta-analysisHla Hla Thein
University Health Network, Division of Clinical Decision Making and Healthcare Research, Toronto, Canada
AIDS 22:1979-91. 2008....
Rethinking 30-day mortality risk after radical prostatectomyShabbir M H Alibhai
Division of General Internal Medicine and Clinical Epidemiology, University Health Network, Toronto, Ontario, Canada
Urology 68:1057-60. 2006..Although radical prostatectomy (RP) is associated with greater 30-day mortality in older men, the magnitude of the excess risk in older age groups compared with younger ones has not been well characterized...
Health status utilities and the impact of pressure ulcers in long-term care residents in OntarioHla Hla Thein
Toronto General Research Institute, University Health Network, Toronto, ON, Canada
Qual Life Res 19:81-9. 2010..To estimate health status utilities in long-term care (LTC) residents in Ontario, both with and without pressure ulcers (PUs), and to determine the impact of PU on health-related quality of life (HRQOL)...
Azathioprine or ileocolic resection for steroid-dependent terminal ileal Crohn's disease? A Markov analysisErin D Kennedy
Department of Surgery and Medicine, University of Toronto, the Samuel Lunenfield Research Institute, Mount Sinai Hospital, Toronto, Canada
Dis Colon Rectum 47:2120-30. 2004....
The ten-year rule revisited: accuracy of clinicians' estimates of life expectancy in patients with localized prostate cancerMurray D Krahn
Department of Medicine, University of Toronto School of Medicine, Toronto, Ontario, Canada
Urology 60:258-63. 2002..quot; Life expectancy estimates are strongly associated with treatment choice. The appropriateness of the 10-year rule remains to be determined...
Predicting EQ-5D utility scores from the Seattle Angina Questionnaire in coronary artery disease: a mapping algorithm using a Bayesian frameworkHarindra C Wijeysundera
Division of Cardiology, Schulich Heart Centre and Department of Medicine, Sunnybrook Health Sciences Centre, University of Toronto, Ontario, Canada
Med Decis Making 31:481-93. 2011..In its current form, however, it cannot be used in economic evaluations. The investigators sought to create a mapping algorithm that would allow translation of SAQ scores into EQ-5D utility scores...
Marker states and a health state prompt provide modest improvements in the reliability and validity of the standard gamble and rating scale in prostate cancer patientsKaren E Bremner
Toronto General Hospital, University Health Network, Toronto, ON, Canada
Qual Life Res 16:1665-75. 2007..To evaluate the combined effect of marker states and a prompt on the reliability and validity of direct utility assessment...
Influence of socioeconomic status on survival of hepatocellular carcinoma in the Ontario population; a population-based study, 1990-2009Nathaniel Jembere
Dalla Lana School of Public Health, University of Toronto, Toronto, Ontario, Canada
PLoS ONE 7:e40917. 2012..We aimed to assess if an association between SES and HCC survival existed in the Canadian context...
Economics of preventing premature mortality and impaired cognitive development in children through home-fortification: a health policy perspectiveWaseem Sharieff
Department of Health Policy, Management and Evaluation, University of Toronto, Toronto, Ontario, Canada
Int J Technol Assess Health Care 24:303-11. 2008..Zinc supplementation may prevent morbidity and mortality related to diarrheal illnesses, and iron supplementation may improve cognitive development, in children...
Delay in surgical therapy for clinically localized prostate cancer and biochemical recurrence after radical prostatectomyRobert K Nam
Division of Urology, University Health Network, University of Toronto, Toronto, Ontario, Canada
Can J Urol 10:1891-8. 2003..These findings may have many biases that could not be properly accounted in this retrospective analysis and larger cohort analyses will be required to confirm these findings...
Tenofovir and entecavir are the most effective antiviral agents for chronic hepatitis B: a systematic review and Bayesian meta-analysesGloria Woo
Toronto Health Economics and Technology Assessment Collaborative, University of Toronto, Toronto, Ontario, Canada
Gastroenterology 139:1218-29. 2010..We evaluated the relative efficacies of the first 12 months of CHB treatments...
Neck pain patients' preference scores for their current healthGabrielle van der Velde
Toronto Health Economics and Technology Assessment THETA Collaborative, University of Toronto, Leslie Dan Pharmacy Building, 6th Floor, Room 658, 144 College Street, and Centre for Research on Inner City Health, Li Ka Shing Knowledge Institute of St Michael s Hospital, Toronto, ON, M5S 3M2, Canada
Qual Life Res 19:687-700. 2010..To elicit neck pain (NP) patients' preference scores for their current health, and investigate the association between their scores and NP disability...
International drug price comparisons: quality assessmentMarcio Machado
Leslie Dan Faculty of Pharmacy, University of Toronto, Toronto, Ontario, Canada
Rev Panam Salud Publica 29:46-51. 2011..To quantitatively summarize results (i.e., prices and affordability) reported from international drug price comparison studies and assess their methodological quality...
The cost effectiveness of rofecoxib and celecoxib in patients with osteoarthritis or rheumatoid arthritisAndreas Maetzel
University Health Network, Toronto, Ontario, Canada
Arthritis Rheum 49:283-92. 2003..To evaluate the cost effectiveness of the cyclooxygenase 2 (COX-2) selective nonsteroidal antiinflammatory drug (NSAID) rofecoxib compared with naproxen and the COX-2 NSAID celecoxib compared with ibuprofen and diclofenac...
Economic appraisal of Ontario's Universal Influenza Immunization Program: a cost-utility analysisBeate Sander
Department of Health Policy, Management and Evaluation, University of Toronto, Toronto, Canada
PLoS Med 7:e1000256. 2010..This is the first large-scale program of its kind worldwide. The objective of this study was to conduct an economic appraisal of Ontario's UIIP compared to a targeted influenza immunization program (TIIP)...
The cost effectiveness of ACE inhibitors as first-line antihypertensive therapyAlain J Nordmann
The Programme in Clinical Epidemiology and Health Care Research, University of Toronto, Toronto, Ontario, Canada
Pharmacoeconomics 21:573-85. 2003..Current hypertension guidelines differ in their recommendations for first-line antihypertensive therapy...
Content validity for dementia of three generic preference based health related quality of life instrumentsMichel Silberfeld
Department of Psychiatry, Baycrest Centre for Geriatric Care, University of Toronto, Ontario, Canada
Qual Life Res 11:71-9. 2002..Compared to the respondent generated attributes all three utility-based quality of life instruments have important shortcomings in content validity...
Decision analysis in aerospace medicine: costs and benefits of a hyperbaric facility in spaceAva John-Baptiste
Department of Medicine, University of Toronto, Toronto, Ontario, Canada
Aviat Space Environ Med 77:434-42; discussion 442-3. 2006..We illustrate the use of decision analysis to compare a hyperbaric oxygen (HBO) chamber to currently available therapy for DCS treatment on the ISS...
Economic analysis of Heart and Stroke Foundation of Ontario's Hypertension Management InitiativeClaire de Oliveira
University Health Network, Toronto, ON, Canada Toronto Health Economics and Technology Assessment Collaborative, Toronto, ON, Canada
Clinicoecon Outcomes Res 4:323-36. 2012....
Cost-utility analysis of primary prophylaxis versus secondary prophylaxis with granulocyte colony-stimulating factor in elderly patients with diffuse aggressive lymphoma receiving curative-intent chemotherapyKelvin K W Chan
Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada
J Clin Oncol 30:1064-71. 2012..We examined the cost-effectiveness of PP when compared with SP...
Techniques for estimating health care costs with censored data: an overview for the health services researcherHarindra C Wijeysundera
Division of Cardiology, Schulich Heart Centre and Department of Medicine, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, Ontario, Canada
Clinicoecon Outcomes Res 4:145-55. 2012..The target audience is health service researchers without an advanced statistical background...
Modelling mitigation strategies for pandemic (H1N1) 2009Marija Zivkovic Gojovic
Toronto Health Economics and Technology Assessment Collaborative, University of Toronto, Research Institute of the Hospital for Sick Children, Toronto, ON
CMAJ 181:673-80. 2009..Simulation models can be used to project the effectiveness of mitigation strategies, but the choice of the best scenario may change depending on model assumptions and uncertainties...
Kidney transplantation in the elderly: a decision analysisSarbjit V Jassal
Division of Nephrology, University Health Network, Toronto, Ontario, Canada
J Am Soc Nephrol 14:187-96. 2003..Prolonged waiting times dramatically decrease the clinical benefits and economic attractiveness of transplantation, suggesting that living donor transplantation may be of particular benefit in this population...
Estimation of stage-specific fibrosis progression rates in chronic hepatitis C virus infection: a meta-analysis and meta-regressionHla Hla Thein
University Health Network, Division of Clinical Decision Making and Health Care Research, Toronto, Ontario, Canada
Hepatology 48:418-31. 2008..Estimates of progression to cirrhosis from studies conducted in clinical settings were lower than previous estimates...
Predictors of antiviral therapy in a post-transfusion cohort of hepatitis C patientsMaciej Witkos
Department of Health Policy, Management and Evaluation, University of Toronto, Toronto General Hospital, Ontario, Canada
Can J Gastroenterol 20:107-11. 2006..Further work is required to understand barriers to treatment related to geography, organization of medical care, age, medical provider and patient preferences...
Identifying the best treatment among common nonsurgical neck pain treatments: a decision analysisGabrielle van der Velde
Institute for Work and Health, Toronto, ON, Canada
Spine (Phila Pa 1976) 33:S184-91. 2008..Decision analysis...
Utility-based Quality of Life measures in Alzheimer's diseaseGary Naglie
Division of General Internal Medicine and Clinical Epidemiology, University Health Network, Toronto, Ontario, Canada
Qual Life Res 15:631-43. 2006....
How much are we spending? The estimation of research expenditures on cardiovascular disease in CanadaClaire de Oliveira
University Health Network, Toronto, ON, Canada
BMC Health Serv Res 12:281. 2012..Our objective was to estimate the magnitude of expenditures on CVD research for the public and charitable (not-for profit) sectors in Canada between 1975 and 2005...
Potential cost-effectiveness of a preventive hepatitis C vaccine in high risk and average risk populations in CanadaMurray D Krahn
Department of Medicine, University Health Network, Department of Health Policy, Management and Evaluation, University of Toronto, 200 Elizabeth Street, Toronto, Ontario, Canada M5G 1C4
Vaccine 23:1549-58. 2005..These results provide encouragement to vaccine developers that a vaccine that is moderately effective and reasonably priced should not face economic barriers to implementation and will be attractive to third party payers...
Life expectancy gains and cost-effectiveness of implantable cardioverter/defibrillators for the primary prevention of sudden cardiac death in patients with hypertrophic cardiomyopathyJohn J You
Institute for Clinical Evaluative Sciences, Toronto, Ontario, Canada
Am Heart J 154:899-907. 2007..Sudden cardiac death (SCD) is a devastating complication of hypertrophic cardiomyopathy (HCM). The optimal strategy for the primary prevention of SCD in HCM remains controversial...
Patient and community preferences for outcomes in prostate cancer: implications for clinical policyMurray Krahn
Department of Medicine And Programme in Clinical Epidemiology and Health Care Research, University of Toronto, Ontario, Candada
Med Care 41:153-64. 2003..Utilities can be elicited directly from patients using standard techniques, or indirectly, using questionnaires that incorporate preference weights from community members...
Cost-effectiveness analyses of hepatitis A vaccine: a systematic review to explore the effect of methodological quality on the economic attractiveness of vaccination strategiesAndrea M Anonychuk
Leslie Dan Faculty of Pharmacy, University of Toronto, Toronto, Ontario, Canada
Pharmacoeconomics 26:17-32. 2008..Methodological quality varied across studies. Major methodological flaws included inappropriate model type, comparator, incidence estimate and inclusion/exclusion of costs...
Health-state utilities and quality of life in hepatitis C patientsChristopher A K Y Chong
Faculty of Medicine, University of Toronto, Ontario, Canada
Am J Gastroenterol 98:630-8. 2003....
Is a mass immunization program for pandemic (H1N1) 2009 good value for money? Evidence from the Canadian ExperienceBeate Sander
Department of Health Policy, Management and Evaluation, University of Toronto, Toronto, Canada
Vaccine 28:6210-20. 2010....
Indications for interferon/ribavirin therapy in hepatitis C patients: findings from a survey of Canadian hepatologistsPeter Wang
Toronto General Hospital, Toronto, Canada
Can J Gastroenterol 17:183-6. 2003..The present study, however, suggests that the survey respondents appear, in general, to adhere to the HCV treatment guidelines by the Canadian Association for Study of the Liver...
The half-cycle correction explained: two alternative pedagogical approachesDavid M J Naimark
Division of Nephrology, Sunny brook and Women s College Health Sciences Centre, Toronto, Canada
Med Decis Making 28:706-12. 2008..Elements of adult learning theory are discussed, which may help the instructor to choose which approach to employ. Implementation of the half-cycle correction in commonly used decision-analytic software is also discussed...
Estimating the prognosis of hepatitis C patients infected by transfusion in Canada between 1986 and 1990Murray Krahn
Toronto General Hospital, ES9 408, 200 Elizabeth Street, Toronto, Ontario M5G 2C4, Canada
Med Decis Making 24:20-9. 2004..To develop a natural history model for chronic hepatitis C virus (HCV) infection to determine allocation of compensatory funds to Canadians who acquired HCV through the blood supply from 1986 through 1990...
Reliability and validity of the PORPUS, a combined psychometric and utility-based quality-of-life instrument for prostate cancerPaul Ritvo
York University, and Cancer Care Ontario, Division of Preventive Oncology, 620 University Ave, 1236, Toronto, Ontario M5G, Canada
J Clin Epidemiol 58:466-74. 2005..In this study we developed and tested these two forms of quality-of-life instruments, both based on a single, validated, health classification system...
Acute appendicitis in young children: cost-effectiveness of US versus CT in diagnosis--a Markov decision analytic modelMichael J Wan
Department of Diagnostic Imaging, Hospital for Sick Children, Toronto, ON, Canada
Radiology 250:378-86. 2009..To compare the cost-effectiveness of different imaging strategies in the diagnosis of pediatric appendicitis by using a decision analytic model...
Economic issues in the use of office spirometry for lung health assessmentMurray Krahn
Department of Medicine, University of Toronto, Toronto, Ontario, Canada
Can Respir J 10:320-6. 2003..Such analyses should play a role in future clinical policy making. Even modest quit rates attributable to screening spirometry may result in highly favourable cost effectiveness ratios...
Responsiveness of disease-specific and generic utility instruments in prostate cancer patientsMurray Krahn
Department of Medicine, University of Toronto, Toronto, Ontario, Canada
Qual Life Res 16:509-22. 2007..Preferences (utilities) for health outcomes have an important role in decisions about prostate cancer screening and treatment. The responsiveness of utility instruments has not been evaluated...
A review of interventions triggered by hepatitis A infected food-handlers in CanadaAndrea C Tricco
Epidemiology and Biostatistics, GlaxoSmithKline Canada, Mississauga, Ontario, Canada
BMC Health Serv Res 6:157. 2006..We undertook a systematic review of such incidents to evaluate the extent of viral transmission through food contamination and the scope of post-exposure prophylaxis (PEP) interventions...
Prescribing patterns for Alzheimer disease: survey of Canadian family physiciansMelinda Hillmer
Faculty of Medicine, University of Toronto, Ontario
Can Fam Physician 52:208-9. 2006..Provincial coverage of these drugs along with physicians' sex, knowledge of ChIs, and perception of the effectiveness of ChIs appear to influence prescribing rates...
Feasibility of internet-based health-related quality of life data collection in a large patient cohortSacha Bhinder
Faculty of Medicine, University of Toronto, Toronto, Canada
J Med Internet Res 12:e35. 2010..Internet-based HRQOL questionnaires are a potential solution, allowing home data collection with immediate storage in a central database...
The effect of English language proficiency on length of stay and in-hospital mortalityAva John-Baptiste
Division of General Internal Medicine, Department of Medicine, University Health Network, University of Toronto, Toronto, Ontario, Canada
J Gen Intern Med 19:221-8. 2004..The effect of communication barriers on outcomes of care in the inpatient setting requires further exploration, particularly for selected conditions in which length of stay is significantly prolonged...
Association of temporal trends in risk factors and treatment uptake with coronary heart disease mortality, 1994-2005Harindra C Wijeysundera
Division of Cardiology, Schulich Heart Centre, Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada
JAMA 303:1841-7. 2010..Coronary heart disease (CHD) mortality has declined substantially in Canada since 1994...
Quality of life in early Parkinson's disease: impact of dyskinesias and motor fluctuationsConnie Marras
Division of Neurology, Toronto Western Hospital, University Health Network, University of Toronto, Toronto, Ontario, Canada
Mov Disord 19:22-8. 2004..We conclude that motor complications that occur within the first 4 years of treatment of PD do not have a significant negative effect on quality of life as measured by a visual analogue scale for most patients...
Economic analysis of a phase III clinical trial evaluating the addition of total androgen suppression to radiation versus radiation alone for locally advanced prostate cancer (Radiation Therapy Oncology Group protocol 86-10)Andre Konski
Department of Radiation Oncology, Fox Chase Cancer Center, Philadelphia, PA 19111, USA
Int J Radiat Oncol Biol Phys 63:788-94. 2005..To evaluate the cost-effectiveness of adding hormone therapy to radiation for patients with locally advanced prostate cancer, using a Monte Carlo simulation of a Markov Model...
The effect of hepatitis C virus infection on health-related quality of life in prisonersHla-Hla Thein
National Centre in HIV Epidemiology and Clincal Research, The University of New South Wales, Sydney, NSW, Australia
J Urban Health 83:275-88. 2006..Non-HCV factors may override HCV-specific HRQOL impairment in this population. Targeted management strategies are required to improve HRQOL of prisoners...
Estimation of utilities for chronic hepatitis C from SF-36 scoresHla-Hla Thein
National Centre in HIV Epidemiology and Clinical Research, The University of New South Wales, Sydney, NSW, Australia
Am J Gastroenterol 100:643-51. 2005....
