58 results on '"Dhalla I"'
Search Results
2. Mechanical thrombectomy in patients with acute ischemic stroke: a cost-utility analysis
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Xie, X., primary, Lambrinos, A., additional, Chan, B., additional, Dhalla, I. A., additional, Krings, T., additional, Casaubon, L. K., additional, Lum, C., additional, Sikich, N., additional, Bharatha, A., additional, Pereira, V. M., additional, Stotts, G., additional, Saposnik, G., additional, O'Callaghan, C., additional, Kelloway, L., additional, and Hill, M. D., additional
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- 2016
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3. Neonatal opioid withdrawal and antenatal opioid prescribing
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Turner, S. D., primary, Gomes, T., additional, Camacho, X., additional, Yao, Z., additional, Guttmann, A., additional, Mamdani, M. M., additional, Juurlink, D. N., additional, and Dhalla, I. A., additional
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- 2015
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4. Activity-based funding of hospitals and its impact on mortality, readmission, discharge destination, severity of illness, and volume of care: a systematic review and meta-analysis
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Palmer K. S., Agoritsas Thomas, Martin D., Scott T., Mulla S. M., Miller A. P., Agarwal A., Bresnahan A., Hazzan A. A., Jeffery R. A., Merglen A., Negm A., Siemieniuk R. A., Bhatnagar N., Dhalla I. A., Lavis J. N., You J. J., Duckett S. J., and Guyatt G. H.
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Multidisciplinary ,lcsh:R ,lcsh:Medicine ,lcsh:Q ,lcsh:Science - Abstract
BACKGROUND: Activity based funding (ABF) of hospitals is a policy intervention intended to re shape incentives across health systems through the use of diagnosis related groups. Many countries are adopting or actively promoting ABF. We assessed the effect of ABF on key measures potentially affecting patients and health care systems: mortality (acute and post acute care); readmission rates; discharge rate to post acute care following hospitalization; severity of illness; volume of care. METHODS: We undertook a systematic review and meta analysis of the worldwide evidence produced since 1980. We included all studies reporting original quantitative data comparing the impact of ABF versus alternative funding systems in acute care settings regardless of language. We searched 9 electronic databases (OVID MEDLINE EMBASE OVID Healthstar CINAHL Cochrane CENTRAL Health Technology Assessment NHS Economic Evaluation Database Cochrane Database of Systematic Reviews and Business Source) hand searched reference lists and consulted with experts. Paired reviewers independently screened for eligibility abstracted data and assessed study credibility according to a pre defined scoring system resolving conflicts by discussion or adjudication. RESULTS: Of 16565 unique citations 50 US studies and 15 studies from 9 other countries proved eligible (i.e. Australia Austria England Germany Israel Italy Scotland Sweden Switzerland). We found consistent and robust differences between ABF and no ABF in discharge to post acute care showing a 24 increase with ABF (pooled relative risk = 1.24 95 CI 1.18 1.31). Results also suggested a possible increase in readmission with ABF and an apparent increase in severity of illness perhaps reflecting differences in diagnostic coding. Although we found no consistent systematic differences in mortality rates and volume of care results varied widely across studies some suggesting appreciable benefits from ABF and others suggesting deleterious consequences. CONCLUSIONS: Transitioning to ABF is associated with important policy and clinically relevant changes. Evidence suggests substantial increases in admissions to post acute care following hospitalization with implications for system capacity and equitable access to care. High variability in results of other outcomes leaves the impact in particular settings uncertain and may not allow a jurisdiction to predict if ABF would be harmless. Decision makers considering ABF should plan for likely increases in post acute care admissions and be aware of the large uncertainty around impacts on other critical outcomes.
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- 2015
5. Impact of legislation and a prescription monitoring program on the prevalence of potentially inappropriate prescriptions for monitored drugs in Ontario: a time series analysis
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Gomes, T., primary, Juurlink, D., additional, Yao, Z., additional, Camacho, X., additional, Paterson, J. M., additional, Singh, S., additional, Dhalla, I., additional, Sproule, B., additional, and Mamdani, M., additional
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- 2014
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6. Implications of "not me" drugs for health systems: lessons from age related macular degeneration
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Campbell, R. J., primary, Dhalla, I. A., additional, Gill, S. S., additional, and Bell, C. M., additional
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- 2012
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7. Opium, opioids, and an increased risk of death
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Dhalla, I. A., primary
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- 2012
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8. Facing up to the prescription opioid crisis
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Dhalla, I. A., primary, Persaud, N., additional, and Juurlink, D. N., additional
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- 2011
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9. Broadening the base of publicly funded health care
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Dhalla, I. A., primary, Guyatt, G. H., additional, Stabile, M., additional, and Bayoumi, A. M., additional
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- 2010
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10. Derivation and validation of an index to predict early death or unplanned readmission after discharge from hospital to the community
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van Walraven, C., primary, Dhalla, I. A., additional, Bell, C., additional, Etchells, E., additional, Stiell, I. G., additional, Zarnke, K., additional, Austin, P. C., additional, and Forster, A. J., additional
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- 2010
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11. Prescribing of opioid analgesics and related mortality before and after the introduction of long-acting oxycodone
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Dhalla, I. A., primary, Mamdani, M. M., additional, Sivilotti, M. L.A., additional, Kopp, A., additional, Qureshi, O., additional, and Juurlink, D. N., additional
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- 2009
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12. The holy trinity of Canadian health policy
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Dhalla, I., primary
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- 2009
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13. Risks and Benefits of Importing Prescription Medications From Lower-Income Countries
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Dhalla, I. A., primary and Detsky, A. S., additional
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- 2008
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14. France's health care system
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Dhalla, I. A., primary and Thomson, S., additional
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- 2008
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15. Moving from opacity to transparency in pharmaceutical policy
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Dhalla, I., primary and Laupacis, A., additional
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- 2008
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16. Canada's health care system and the sustainability paradox
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Dhalla, I., primary
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- 2007
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17. Creating the right evidence for system change
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Lam, K., Stephen Hwang, Dhalla, I. A., Hota, S., Thorpe, K., Palda, V. A., Brown, A., and Klein, D. J.
18. Sex differences in first-year students at Canadian medical schools
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Andrea Waddell, Dhalla, I. A., Kwong, J. C., Baddour, R. C., Streiner, D. L., Stewart, D. E., and Johnson, I. L.
19. Oral vitamin B12 therapy in the primary care setting: a qualitative and quantitative study of patient perspectives
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Dhalla Irfan A, Carr David, Kwong Jeff C, Tom-Kun Denise, and Upshur Ross EG
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Medicine (General) ,R5-920 - Abstract
Abstract Background Although oral replacement with high doses of vitamin B12 is both effective and safe for the treatment of B12 deficiency, little is known about patients' views concerning the acceptability and effectiveness of oral B12. We investigated patient perspectives on switching from injection to oral B12 therapy. Methods This study involved a quantitative arm using questionnaires and a qualitative arm using semi-structured interviews, both to assess patient views on injection and oral therapy. Patients were also offered a six-month trial of oral B12 therapy. One hundred and thirty-three patients who receive regular B12 injections were included from three family practice units (two hospital-based academic clinics and one community health centre clinic) in Toronto. Results Seventy-three percent (63/86) of respondents were willing to try oral B12. In a multivariate analysis, patient factors associated with a "willingness to switch" to oral B12 included being able to get to the clinic in less than 30 minutes (OR 9.3, 95% CI 2.2–40.0), and believing that frequent visits to the health care provider (OR 5.4, 95% CI 1.1–26.6) or the increased costs to the health care system (OR 16.7, 95% CI 1.5–184.2) were disadvantages of injection B12. Fifty-five patients attempted oral therapy and 52 patients returned the final questionnaire. Of those who tried oral therapy, 76% (39/51) were satisfied and 71% (39/55) wished to permanently switch. Factors associated with permanently switching to oral therapy included believing that the frequent visits to the health care provider (OR 35.4, 95% CI 2.9–432.7) and travel/parking costs (OR 8.7, 95% CI 1.2–65.3) were disadvantages of injection B12. Interview participants consistently cited convenience as an advantage of oral therapy. Conclusion Switching patients from injection to oral B12 is both feasible and acceptable to patients. Oral B12 supplementation is well received largely due to increased convenience. Clinicians should offer oral B12 therapy to their patients who are currently receiving injections, and newly diagnosed B12-deficient patients who can tolerate and are compliant with oral medications should be offered oral supplementation.
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- 2005
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20. Genetics Navigator: protocol for a mixed methods randomized controlled trial evaluating a digital platform to deliver genomic services in Canadian pediatric and adult populations.
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D'Amours G, Clausen M, Luca S, Reble E, Kodida R, Assamad D, Bernier F, Chad L, Costain G, Dhalla I, Faghfoury H, Friedman JM, Hewson S, Jamieson T, Silver J, Shuman C, Osmond M, Carroll JC, Jobling R, Laberge AM, Aronson M, Liston E, Lerner-Ellis J, Marshall C, Brudno M, Pham Q, Rudzicz F, Cohn R, Mamdani M, Smith M, Shastri-Estrada S, Seto E, Thorpe K, Ungar W, Hayeems RZ, and Bombard Y
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- Humans, Adult, Child, Genetic Testing methods, Randomized Controlled Trials as Topic, Quality of Life, Ontario, Canada, Patient Navigation, Genetic Counseling methods
- Abstract
Introduction: Genetic testing is used across medical disciplines leading to unprecedented demand for genetic services. This has resulted in excessive waitlists and unsustainable pressure on the standard model of genetic healthcare. Alternative models are needed; e-health tools represent scalable and evidence-based solution. We aim to evaluate the effectiveness of the Genetics Navigator, an interactive patient-centred digital platform that supports the collection of medical and family history, provision of pregenetic and postgenetic counselling and return of genetic testing results across paediatric and adult settings., Methods and Analysis: We will evaluate the effectiveness of the Genetics Navigator combined with usual care by a genetics clinician (physician or counsellor) to usual care alone in a randomised controlled trial. One hundred and thirty participants (adults patients or parents of paediatric patients) eligible for genetic testing through standard of care will be recruited across Ontario genetics clinics. Participants randomised into the intervention arm will use the Genetics Navigator for pretest and post-test genetic counselling and results disclosure in conjunction with their clinician. Participants randomised into the control arm will receive usual care, that is, clinician-delivered pretest and post-test genetic counselling, and results disclosure. The primary outcome is participant distress 2 weeks after test results disclosure. Secondary outcomes include knowledge, decisional conflict, anxiety, empowerment, quality of life, satisfaction, acceptability, digital health literacy and health resource use. Quantitative data will be analysed using statistical hypothesis tests and regression models. A subset of participants will be interviewed to explore user experience; data will be analysed using interpretive description. A cost-effectiveness analysis will examine the incremental cost of the Navigator compared with usual care per unit reduction in distress or unit improvement in quality of life from public payer and societal perspectives., Ethics and Dissemination: This study was approved by Clinical Trials Ontario. Results will be shared through stakeholder workshops, national and international conferences and peer-reviewed journals., Trial Registration Number: NCT06455384., Competing Interests: Competing interests: YB and MC are cofounders of Genetics Adviser., (© Author(s) (or their employer(s)) 2024. Re-use permitted under CC BY-NC. No commercial re-use. See rights and permissions. Published by BMJ.)
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- 2024
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21. Google star ratings of Canadian hospitals: a nationwide cross-sectional analysis.
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Tse MP, Dhalla I, and Nayyar D
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- Cross-Sectional Studies, Canada, Humans, Surveys and Questionnaires, Patient Satisfaction statistics & numerical data, Internet, Hospitals statistics & numerical data, Hospitals standards
- Abstract
Background: Data on patients' self-reported hospital experience can help guide quality improvement. Traditional patient survey programmes are resource intensive, and results are not always publicly accessible. Unsolicited online hospital reviews are an alternative data source; however, the nature of online reviews for Canadian hospitals is unknown., Methods: We conducted a nationwide cross-sectional study of Canadian acute care hospitals with more than 10 Google Reviews during the 2018-2019 fiscal year. We characterised the volume and distribution of Google Reviews of Canadian hospitals, and assessed their correlation with hospital characteristics (teaching status, size, occupancy rate, length of stay, resource utilisation) and Canadian Patient Experience Survey on Inpatient Care (CPES-IC) scores., Results: 167 out of 523 (31.9%) acute care hospitals in Canada met the inclusion criteria. Among included hospitals, there was a total of 10 395 Google Reviews and a median of 35 reviews per hospital. The mean Google Star Rating for included hospitals was 2.85 out of 5, with a range of 1.36-4.57. Teaching hospitals had significantly higher mean Google Star Ratings compared with non-teaching hospitals (3.16 vs 2.81, p <0.01). There was a weak, positive correlation between hospitals' Google Star Ratings and CPES-IC 'Overall Hospital Experience' scores (p =0.04), but no significant correlation between Google Star Ratings and other hospital characteristics or subcategories of CPES-IC scores., Interpretation: There is significant interhospital variation in patients' self-reported care experiences at Canadian acute care hospitals. Online reviews can serve as a readily accessible source of real-time data for hospitals to monitor and improve the patient experience., Competing Interests: Competing interests: None declared., (© Author(s) (or their employer(s)) 2024. Re-use permitted under CC BY-NC. No commercial re-use. See rights and permissions. Published by BMJ.)
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- 2024
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22. Building a Resilient Patient Safety Culture: A Large Healthcare Organization's Approach to Systematically Reviewing Serious Harm Events.
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Harvey B, Dhalla I, O'Neill C, Léger C, and Hunter H
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- Humans, Ontario, Medical Errors prevention & control, Organizational Culture, COVID-19 prevention & control, Canada, Patient Safety, Safety Management organization & administration
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Across Canada, pressures related to staffing, burnout and funding continue to affect healthcare organizations and systems. These pressures impact the quality of care Canadians receive, most notably access to care. Evidence indicates that patients are more likely to suffer from preventable harm during periods of hospital overcrowding and, indeed, very recent data from the Canadian Institute for Health Information suggest that rates of preventable harm have increased modestly in Canadian hospitals. A key lever that can have a positive impact on patient safety culture and contribute to fewer preventable adverse events at an institutional level is systematic formal case reviews. This article describes a large healthcare organization's approach to systematically reviewing serious harm events. An evaluation of both quantitative and qualitative metrics suggests that Unity Health Toronto's critical incident review process has been effective at building a resilient patient safety culture that stood up to the challenges of the COVID-19 pandemic and continues to have a positive impact on patient safety at Unity Health Toronto., (Copyright © 2024 Longwoods Publishing.)
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- 2024
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23. Association of neighbourhood-level material deprivation with adverse outcomes and processes of care among patients with heart failure in a single-payer healthcare system: A population-based cohort study.
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Bobrowski D, Dorovenis A, Abdel-Qadir H, McNaughton CD, Alonzo R, Fang J, Austin PC, Udell JA, Jackevicius CA, Alter DA, Atzema CL, Bhatia RS, Booth GL, Ha ACT, Johnston S, Dhalla I, Kapral MK, Krumholz HM, Roifman I, Wijeysundera HC, Ko DT, Tu K, Ross HJ, Schull MJ, and Lee DS
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- Humans, Female, Aged, Aged, 80 and over, Male, Socioeconomic Factors, Cohort Studies, Retrospective Studies, Delivery of Health Care, Heart Failure epidemiology, Heart Failure therapy
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Aim: We studied the association between neighbourhood material deprivation, a metric estimating inability to attain basic material needs, with outcomes and processes of care among incident heart failure patients in a universal healthcare system., Methods and Results: In a population-based retrospective study (2007-2019), we examined the association of material deprivation with 1-year all-cause mortality, cause-specific hospitalization, and 90-day processes of care. Using cause-specific hazards regression, we quantified the relative rate of events after multiple covariate adjustment, stratifying by age ≤65 or ≥66 years. Among 395 763 patients (median age 76 [interquartile range 66-84] years, 47% women), there was significant interaction between age and deprivation quintile for mortality/hospitalization outcomes (p ≤ 0.001). Younger residents (age ≤65 years) of the most versus least deprived neighbourhoods had higher hazards of all-cause death (hazard ratio [HR] 1.19, 95% confidence interval [CI] 1.10-1.29]) and cardiovascular hospitalization (HR 1.29 [95% CI 1.19-1.39]). Older individuals (≥66 years) in the most deprived neighbourhoods had significantly higher hazard of death (HR 1.11 [95% CI 1.08-1.14]) and cardiovascular hospitalization (HR 1.13 [95% CI 1.09-1.18]) compared to the least deprived. The magnitude of the association between deprivation and outcomes was amplified in the younger compared to the older age group. More deprived individuals in both age groups had a lower hazard of cardiology visits and advanced cardiac imaging (all p < 0.001), while the most deprived of younger ages were less likely to undergo implantable cardioverter-defibrillator/cardiac resynchronization therapy-pacemaker implantation (p = 0.023), compared to the least deprived., Conclusion: Patients with newly-diagnosed heart failure residing in the most deprived neighbourhoods had worse outcomes and reduced access to care than those less deprived., (© 2023 The Authors. European Journal of Heart Failure published by John Wiley & Sons Ltd on behalf of European Society of Cardiology.)
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- 2023
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24. Association of Neighborhood-Level Marginalization With Health Care Use and Clinical Outcomes Following Hospital Discharge in Patients Who Underwent Coronary Catheterization for Acute Myocardial Infarction in a Single-Payer Health Care System.
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Akioyamen LE, Abdel-Qadir H, Han L, Sud M, Mistry N, Alter DA, Atzema CL, Austin PC, Bhatia RS, Booth GL, Dhalla I, Ha ACT, Jackevicius CA, Kapral MK, Krumholz HM, Lee DS, McNaughton CD, Roifman I, Schull MJ, Sivaswamy A, Tu K, Udell JA, Wijeysundera HC, and Ko DT
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- Humans, Female, Aged, Male, Aftercare, Ontario epidemiology, Health Services Accessibility, Hospitals, Cardiac Catheterization adverse effects, Patient Discharge, Myocardial Infarction therapy, Myocardial Infarction drug therapy
- Abstract
Background: Canadian data suggest that patients of lower socioeconomic status with acute myocardial infarction receive less beneficial therapy and have worse clinical outcomes, raising questions regarding care disparities even in universal health care systems. We assessed the contemporary association of marginalization with clinical outcomes and health services use., Methods: Using clinical and administrative databases in Ontario, Canada, we conducted a population-based study of patients aged ≥65 years hospitalized for their first acute myocardial infarction between April 1, 2010 and March 1, 2019. Patients receiving cardiac catheterization and surviving 7 days postdischarge were included. Our primary exposure was neighborhood-level marginalization, a multidimensional socioeconomic status metric. Neighborhoods were categorized by quintile from Q1 (least marginalized) to Q5 (most marginalized). Our primary outcome was all-cause mortality. A proportional hazards regression model with a robust variance estimator was used to quantify the association of marginalization with outcomes, adjusting for risk factors, comorbidities, disease severity, and regional cardiologist supply., Results: Among 53 841 patients (median age, 75 years; 39.1% female) from 20 640 neighborhoods, crude 1- and 3-year mortality rates were 7.7% and 17.2%, respectively. Patients in Q5 had no significant difference in 1-year mortality (hazard ratio [HR], 1.08 [95% CI, 0.95-1.22]), but greater mortality over 3 years (HR, 1.13 [95% CI, 1.03-1.22]) compared with Q1. Over 1 year, we observed differences between Q1 and Q5 in visits to primary care physicians (Q1, 96.7%; Q5, 93.7%) and cardiologists (Q1, 82.6%; Q5, 72.6%), as well as diagnostic testing. There were no differences in secondary prevention medications dispensed or medication adherence at 1 year., Conclusions: In older patients with acute myocardial infarction who survived to hospital discharge, those residing in the most marginalized neighborhoods had a greater long-term risk of mortality, less specialist care, and fewer diagnostic tests. Yet, there were no differences across socioeconomic status in prescription medication use and adherence., Competing Interests: Disclosures Dr Ha reports receiving fees for giving lectures and serving on advisory boards from Bayer, Bristol Myers Squibb, Pfizer, and Servier. In the past three years, Harlan Krumholz received expenses and/or personal fees from Element Science, Eyedentify, and F-Prime. He is a co-founder of Hugo Health, Refactor Health, and Ensight-AI. He is the co-editor of Journal Watch: Cardiology of the Massachusetts Medical Society and is a section editor of UpToDate. He is associated with contracts, through Yale New Haven Hospital, from the Centers for Medicare & Medicaid Services and through Yale University from Janssen, Johnson & Johnson Consumer, and Pfizer. The other authors report no conflicts.
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- 2023
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25. Enjeux relatifs à la collecte des données sur la race et l’identité autochtone lors du renouvellement de la carte santé au Canada.
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Pinto AD, Eissa A, Kiran T, Mashford-Pringle A, Needham A, and Dhalla I
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Competing Interests: Intérêts concurrents: Andrew Pinto est titulaire d’une chaire de recherche appliquée en santé publique appliquée des Instituts de recherche en santé du Canada (IRSC) et est soutenu à titre de clinicien-chercheur par le Département de médecine familiale et communautaire, Faculté de médecine, Université de Toronto, par le Département de médecine familiale et communautaire de l’Hôpital St Michael et par l’Institut du savoir Li Ka Shing, Hôpital St Michael. Il est également directeur adjoint de la recherche clinique au Réseau de recherche basée sur la pratique de l’Université de Toronto. Le Dr Pinto fait aussi partie du Conseil consultatif de l’Institut de la santé publique et des populations des IRSC. Tara Kiran déclare avoir reçu des honoraires de consultation et des subventions de recherche de l’organisme Santé Ontario et des subventions de recherche du ministère de la Santé de l’Ontario. Aucun autre intérêt concurrent n’a été déclaré.
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- 2023
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26. Considerations for collecting data on race and Indigenous identity during health card renewal across Canadian jurisdictions.
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Pinto AD, Eissa A, Kiran T, Mashford-Pringle A, Needham A, and Dhalla I
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- Humans, Canada, Cardiology
- Abstract
Competing Interests: Competing interests: Andrew Pinto holds a Canadian Institutes of Health Research (CIHR) Applied Public Health Chair and is supported as a Clinician-Scientist in the Department of Family and Community Medicine, Faculty of Medicine, University of Toronto, and supported by the Department of Family and Community Medicine, St. Michael’s Hospital, and the Li Ka Shing Knowledge Institute, St. Michael’s Hospital. He is also the Associate Director for Clinical Research at the University of Toronto Practice-Based Research Network. Dr. Pinto also serves on the Institute Advisory Board of the CIHR Institute for Population and Public Health. Tara Kiran reports receiving consulting fees and research grants from Ontario Health and research grants from the Ontario Ministry of Health. No other competing interests were declared.
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- 2023
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27. Association of Neighborhood-Level Material Deprivation With Atrial Fibrillation Care in a Single-Payer Health Care System: A Population-Based Cohort Study.
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Abdel-Qadir H, Akioyamen LE, Fang J, Pang A, Ha ACT, Jackevicius CA, Alter DA, Austin PC, Atzema CL, Bhatia RS, Booth GL, Johnston S, Dhalla I, Kapral MK, Krumholz HM, McNaughton CD, Roifman I, Tu K, Udell JA, Wijeysundera HC, Ko DT, Schull MJ, and Lee DS
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- Aged, Anticoagulants adverse effects, Cohort Studies, Delivery of Health Care, Female, Hemorrhage chemically induced, Humans, Male, Ontario epidemiology, Risk Factors, Atrial Fibrillation diagnosis, Atrial Fibrillation epidemiology, Atrial Fibrillation therapy, Heart Failure drug therapy, Stroke epidemiology
- Abstract
Background: There are limited data on the association of material deprivation with clinical care and outcomes after atrial fibrillation (AF) diagnosis in jurisdictions with universal health care., Methods: This was a population-based cohort study of individuals ≥66 years of age with first diagnosis of AF between April 1, 2007, and March 31, 2019, in the Canadian province of Ontario, which provides public funding and prohibits private payment for medically necessary physician and hospital services. Prescription medications are subsidized for residents >65 years of age. The primary exposure was neighborhood material deprivation, a metric derived from Canadian census data to estimate inability to attain basic material needs. Neighborhoods were categorized by quintile from Q1 (least deprived) to Q5 (most deprived). Cause-specific hazards regression was used to study the association of material deprivation quintile with time to AF-related adverse events (death or hospitalization for stroke, heart failure, or bleeding), clinical services (physician visits, cardiac diagnostics), and interventions (anticoagulation, cardioversion, ablation) while adjusting for individual characteristics and regional cardiologist supply., Results: Among 347 632 individuals with AF (median age 79 years, 48.9% female), individuals in the most deprived neighborhoods (Q5) had higher prevalence of cardiovascular disease, risk factors, and noncardiovascular comorbidity relative to residents of the least deprived neighborhoods (Q1). After adjustment, Q5 residents had higher hazards of death (hazard ratio [HR], 1.16 [95% CI, 1.13-1.20]) and hospitalization for stroke (HR, 1.16 [95% CI, 1.07-1.27]), heart failure (HR, 1.14 [95% CI, 1.11-1.18]), or bleeding (HR, 1.16 [95% CI, 1.07-1.25]) relative to Q1. There were small differences across quintiles in primary care physician visits (HR, Q5 versus Q1, 0.91 [95% CI, 0.89-0.92]), echocardiography (HR, Q5 versus Q1, 0.97 [95% CI, 0.96-0.99]), and dispensation of anticoagulation (HR, Q5 versus Q1, 0.97 [95% CI, 0.95-0.98]). There were more prominent disparities for Q5 versus Q1 in cardiologist visits (HR, 0.84 [95% CI, 0.82-0.86]), cardioversion (HR, 0.80 [95% CI, 0.76-0.84]), and ablation (HR, 0.45 [95% CI, 0.30-0.67])., Conclusions: Despite universal health care and prescription medication coverage, residents of more deprived neighborhoods were less likely to visit cardiologists or receive rhythm control interventions after AF diagnosis, even though they exhibited higher cardiovascular disease burden and higher risk of adverse outcomes.
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- 2022
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28. Prone positioning of patients with moderate hypoxaemia due to covid-19: multicentre pragmatic randomised trial (COVID-PRONE).
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Fralick M, Colacci M, Munshi L, Venus K, Fidler L, Hussein H, Britto K, Fowler R, da Costa BR, Dhalla I, Dunbar-Yaffe R, Branfield Day L, MacMillan TE, Zipursky J, Carpenter T, Tang T, Cooke A, Hensel R, Bregger M, Gordon A, Worndl E, Go S, Mandelzweig K, Castellucci LA, Tamming D, Razak F, and Verma AA
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- Aged, Female, Hospital Mortality, Humans, Hypoxia etiology, Hypoxia therapy, Middle Aged, Patient Positioning, Prone Position, COVID-19 complications
- Abstract
Objectives: To assess the effectiveness of prone positioning to reduce the risk of death or respiratory failure in non-critically ill patients admitted to hospital with covid-19., Design: Multicentre pragmatic randomised clinical trial., Setting: 15 hospitals in Canada and the United States from May 2020 until May 2021., Participants: Eligible patients had a laboratory confirmed or a clinically highly suspected diagnosis of covid-19, needed supplemental oxygen (up to 50% fraction of inspired oxygen), and were able to independently lie prone with verbal instruction. Of the 570 patients who were assessed for eligibility, 257 were randomised and 248 were included in the analysis., Intervention: Patients were randomised 1:1 to prone positioning (that is, instructing a patient to lie on their stomach while they are in bed) or standard of care (that is, no instruction to adopt prone position)., Main Outcome Measures: The primary outcome was a composite of in-hospital death, mechanical ventilation, or worsening respiratory failure defined as needing at least 60% fraction of inspired oxygen for at least 24 hours. Secondary outcomes included the change in the ratio of oxygen saturation to fraction of inspired oxygen., Results: The trial was stopped early on the basis of futility for the pre-specified primary outcome. The median time from hospital admission until randomisation was 1 day, the median age of patients was 56 (interquartile range 45-65) years, 89 (36%) patients were female, and 222 (90%) were receiving oxygen via nasal prongs at the time of randomisation. The median time spent prone in the first 72 hours was 6 (1.5-12.8) hours in total for the prone arm compared with 0 (0-2) hours in the control arm. The risk of the primary outcome was similar between the prone group (18 (14%) events) and the standard care group (17 (14%) events) (odds ratio 0.92, 95% confidence interval 0.44 to 1.92). The change in the ratio of oxygen saturation to fraction of inspired oxygen after 72 hours was similar for patients randomised to prone positioning and standard of care., Conclusion: Among non-critically ill patients with hypoxaemia who were admitted to hospital with covid-19, a multifaceted intervention to increase prone positioning did not improve outcomes. However, wide confidence intervals preclude definitively ruling out benefit or harm. Adherence to prone positioning was poor, despite multiple efforts to increase it. Subsequent trials of prone positioning should aim to develop strategies to improve adherence to awake prone positioning., Study Registration: ClinicalTrials.gov NCT04383613., Competing Interests: Competing interests: All authors have completed the ICMJE uniform disclosure form at www.icmje.org/disclosure-of-interest/ and declare: the study was funded by St Michael’s Hospital Innovation Fund, the Sinai Health Research Fund, and Sunnybrook Health Sciences Centre Alternate Funding Plan Innovation Fund; JZ has received payments for medicolegal opinions regarding the safety and effectiveness of drugs outside the submitted work; AV is provincial clinical lead for quality improvement in general internal medicine at Ontario Health and an AMS healthcare fellow in compassion and artificial intelligence and has received funding for covid related research from CIHR, Canadian Frailty Network, St Michael's Hospital, Sinai Health System, and St Michael's Hospital Foundation; MF is a consultant for a start-up company (ProofDx) that has developed a point-of-care diagnostic test for covid-19 using CRISPR; FR has received an award from the Mak Pak Chiu and Mak-Soo Lai Hing chair in general internal medicine, University of Toronto, outside the submitted work and is an employee of Ontario Health; no other relationships or activities that could appear to have influenced the submitted work., (© Author(s) (or their employer(s)) 2019. Re-use permitted under CC BY-NC. No commercial re-use. See rights and permissions. Published by BMJ.)
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- 2022
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29. Correspondence on "cost or price of sequencing? implications for economic evaluations in genomic medicine" by Grosse and Gudgeon.
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Li C, Vandersluis S, Holubowich C, Ungar WJ, Goh ES, Boycott KM, Sikich N, Dhalla I, and Ng V
- Subjects
- Cost-Benefit Analysis, Humans, Evidence-Based Medicine, Genomic Medicine
- Abstract
Competing Interests: Conflict of Interest The opinions expressed in this correspondence do not necessarily represent the opinions of Ontario Health, a government agency that supported the completion of this work. Kym M. Boycott and Wendy J. Ungar are receiving funding from the Ontario Ministry of Health and Genome Canada to examine the implementation of genome-wide sequencing (GWS) in Ontario. Ungar chairs the Ontario Genetics Advisory Committee but did not participate in funding deliberations on GWS. Other authors have no conflicts of interest or financial disclosures to disclose regarding this study.
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- 2022
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30. Cost-effectiveness of genome-wide sequencing for unexplained developmental disabilities and multiple congenital anomalies.
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Li C, Vandersluis S, Holubowich C, Ungar WJ, Goh ES, Boycott KM, Sikich N, Dhalla I, and Ng V
- Subjects
- Child, Cost-Benefit Analysis, Humans, Ontario, Exome Sequencing, Abnormalities, Multiple, Developmental Disabilities diagnosis, Developmental Disabilities genetics
- Abstract
Purpose: Genetic testing is routine practice for individuals with unexplained developmental disabilities and multiple congenital anomalies. However, current testing pathways can be costly and time consuming, and the diagnostic yield low. Genome-wide sequencing, including exome sequencing (ES) and genome sequencing (GS), can improve diagnosis, but at a higher cost. This study aimed to assess the cost-effectiveness of genome-wide sequencing in Ontario, Canada., Methods: A cost-effectiveness analysis was conducted using a discrete event simulation from a public payer perspective. Six strategies involving ES or GS were compared. Outcomes reported were direct medical costs, number of molecular diagnoses, number of positive findings, and number of active treatment changes., Results: If ES was used as a second-tier test (after the current first-tier, chromosomal microarray, fails to provide a diagnosis), it would be less costly and more effective than standard testing (CAN$6357 [95% CI: 6179-6520] vs. CAN$8783 per patient [95% CI: 2309-31,123]). If ES was used after standard testing, it would cost an additional CAN$15,228 to identify the genetic diagnosis for one additional patient compared with standard testing. The results remained robust when parameters and assumptions were varied., Conclusion: ES would likely be cost-saving if used earlier in the diagnostic pathway.
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- 2021
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31. Pushing the envelope: Advancing Canadian healthcare payment models through evaluation.
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Petersen S, Dhalla I, and Hellsten E
- Subjects
- Canada, Cost Control economics, Cost Control organization & administration, Health Care Costs, Health Care Reform organization & administration, Healthcare Financing, Humans, Ontario, Quality Improvement economics, Quality Improvement organization & administration, Quality of Health Care economics, Quality of Health Care organization & administration, Health Care Reform economics, Models, Economic, Reimbursement Mechanisms economics, Reimbursement Mechanisms organization & administration
- Abstract
When health systems aim to improve, two key considerations tend to be front and centre: cost and quality. On the cost side, health spending in Canada continues to rise. On the quality side, improvement is needed across the country. As the primary funder of healthcare, governments' historical role has focused on managing costs through their powers to set budgets, decide who gets paid, and how. Increasingly, governments are recognizing that the ways in which they choose to pay providers and organizations can also have an impact on the quality of care provided. Using Ontario as an example, we present a Canadian vision for modernizing how healthcare is organized and reimbursed and for using evidence and evaluation as the backbone for iterating new models. Realizing this vision will move Canada closer to international leadership in delivering high-quality, affordable care.
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- 2019
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32. What "Value" Should We Pay For? A Path Toward Value-Based Payment in Canadian Healthcare Systems.
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Hellsten E and Dhalla I
- Subjects
- Canada, Humans, Technology Assessment, Biomedical, Cost Control economics, Delivery of Health Care economics, Health Care Reform economics, Value-Based Purchasing
- Abstract
There is broad consensus that achieving a "value-based" healthcare system requires a shift toward "value-based payment," but less agreement on what this entails beyond moving away from fee-for-service reimbursement. Opinions diverge on the ideal end-state payment model, and the evidence base remains equivocal. We propose a framework for Canadian payers interested in pursuing value-based payment reforms that draws lessons from two widely recognized examples of paying for value in healthcare: the US Center for Medicare & Medicaid Innovation and Canada's own experience using health technology assessment to inform payment policy., (Copyright © 2019 Longwoods Publishing.)
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- 2019
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33. Cost-Effectiveness of Magnetic Resonance-Guided Focused Ultrasound for Essential Tremor.
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Li C, Gajic-Veljanoski O, Schaink AK, Higgins C, Fasano A, Sikich N, Dhalla I, and Ng V
- Subjects
- Canada, Cost-Benefit Analysis, Deep Brain Stimulation economics, Humans, Magnetic Resonance Imaging, Markov Chains, Quality-Adjusted Life Years, Radiofrequency Ablation economics, Essential Tremor surgery, High-Intensity Focused Ultrasound Ablation economics, Neurosurgical Procedures economics, Surgery, Computer-Assisted economics, Thalamus surgery
- Abstract
Background: Radiofrequency thalamotomy and deep brain stimulation are current treatments for moderate to severe medication-refractory essential tremor. However, they are invasive and thus carry risks. Magnetic resonance-guided focused ultrasound is a new, less invasive surgical option. The objective of the present study was to determine the cost-effectiveness of magnetic resonance-guided focused ultrasound compared with standard treatments in Canada., Methods: We conducted a cost-utility analysis using a Markov cohort model. We compared magnetic resonance-guided focused ultrasound with no surgery in people ineligible for invasive neurosurgery and with radiofrequency thalamotomy and deep brain stimulation in people eligible for invasive neurosurgery. In the reference case analysis, we used a 5-year time horizon and a public payer perspective and discounted costs and benefits at 1.5% per year., Results: Compared with no surgery in people ineligible for invasive neurosurgery, magnetic resonance-guided focused ultrasound cost $21,438 more but yielded 0.47 additional quality-adjusted life years, producing an incremental cost-effectiveness ratio of $45,817 per quality-adjusted life year gained. In people eligible for invasive neurosurgery, magnetic resonance-guided focused ultrasound was slightly less effective but much less expensive compared with the current standard of care, deep brain stimulation. The results were sensitive to assumptions regarding the time horizon, cost of magnetic resonance-guided focused ultrasound, and probability of recurrence., Conclusions: In people ineligible for invasive neurosurgery, the incremental cost-effectiveness ratio of magnetic resonance-guided focused ultrasound versus no surgery is comparable to many other tests and treatments that are widely adopted in high-income countries. In people eligible for invasive neurosurgery, magnetic resonance-guided focused ultrasound is also a reasonable option. © 2018 International Parkinson and Movement Disorder Society., (© 2018 International Parkinson and Movement Disorder Society.)
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- 2019
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34. Care setting and 30-day hospital readmissions among older adults: a population-based cohort study.
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Gruneir A, Fung K, Fischer HD, Bronskill SE, Panjwani D, Bell CM, Dhalla I, Rochon PA, and Anderson G
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- Aged, Aged, 80 and over, Female, Humans, Male, Ontario epidemiology, Retrospective Studies, Geriatric Assessment statistics & numerical data, Health Services for the Aged organization & administration, Patient Discharge statistics & numerical data, Patient Readmission statistics & numerical data, Transitional Care organization & administration
- Abstract
Background: Despite the fact that many older adults receive home or long-term care services, the effect of these care settings on hospital readmission is often overlooked. Efforts to reduce hospital readmissions, including capacity planning and targeting of interventions, require clear data on the frequency of and risk factors for readmission among different populations of older adults., Methods: We identified all adults older than 65 years discharged from an unplanned medical hospital stay in Ontario between April 2008 and December 2015. We defined 2 preadmission care settings (community, long-term care) and 3 discharge care settings (community, home care, long-term care) and used multinomial regression to estimate associations with 30-day readmission (and death as a competing risk)., Results: We identified 701 527 individuals (mean age 78.4 yr), of whom 414 302 (59.1%) started in and returned to the community. Overall, 88 305 in dividuals (12.6%) were re admitted within 30 days, but this proportion varied by care setting combination. Relative to individuals returning to the community, those discharged to the community with home care (adjusted odds ratio [OR] 1.43, 95% confidence interval [CI] 1.39-1.46) and those returning to long-term care (adjusted OR 1.35, 95% CI 1.27-1.43) had a greater risk of readmission, whereas those newly admitted to long-term care had a lower risk of readmission (adjusted OR 0.68, 95% CI 0.63-0.72)., Interpretation: In Ontario, about 40% of older people were discharged from hospital to either home care or long-term care. These discharge settings, as well as whether an individual was admitted to hospital from long-term care, have important implications for understanding 30-day readmission rates. System planning and efforts to reduce readmission among older adults should take into account care settings at both admission and discharge., Competing Interests: Competing interests: Chaim Bell is a medical consultant with the Policy and Innovations Branch of the Ontario Ministry of Health and Long-Term Care. No other competing interests were declared., (© 2018 Joule Inc. or its licensors.)
- Published
- 2018
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35. Aligning innovations in health funding with innovations in care.
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Ivers NM, Dhalla I, and Brown A
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- Canada, Humans, Delivery of Health Care, Integrated economics, Diffusion of Innovation, Health Personnel economics, Healthcare Financing
- Abstract
Competing Interests: Competing interests: Noah Ivers reports grants from Canadian Institutes of Health Research and the Government of Ontario, outside the submitted work. Irfan Dhalla reports that his affiliation, Health Quality Ontario, has an institutional interest in advancing some of the ideas discussed in this article. No other competing interests were declared.
- Published
- 2018
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36. DEVELOPMENT OF THE ONTARIO DECISION FRAMEWORK: A VALUES BASED FRAMEWORK FOR HEALTH TECHNOLOGY ASSESSMENT.
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Krahn M, Miller F, Bayoumi A, Brooker AS, Wagner F, Winsor S, Giacomini M, Goeree R, Schünemann H, van der Velde G, Petersen S, Sikich N, and Dhalla I
- Subjects
- Costs and Cost Analysis, Decision Support Techniques, Evidence-Based Medicine organization & administration, Humans, Patient-Centered Care, Decision Making, Technology Assessment, Biomedical organization & administration
- Abstract
Objectives: In 2007, the Ontario Health Technology Advisory Committee (OHTAC) developed a decision framework to guide decision making around nondrug health technologies. In 2012, OHTAC commissioned a revision of this framework to enhance its usability and deepen its conceptual and theoretical foundations., Methods: The committee overseeing this work used several methods: (a) a priori consensus on guiding principles, (b) a scoping review of decision attributes and processes used globally in health technology assessment (HTA), (c) presentations by methods experts and members of review committees, and (d) committee deliberations over a period of 3 years., Results: The committee adopted a multi-criteria decision-making approach, but rejected the formal use of multi-criteria decision analysis. Three broad categories of attributes were identified: (I) context criteria attributes included factors such as stakeholders, adoption pressures from neighboring jurisdictions, and potential conflicts of interest; (II) primary appraisal criteria attributes included (i) benefits and harms, (ii) economics, and (iii) patient-centered care; (III) feasibility criteria attributes included budget impact and organizational feasibility., Conclusion: The revised Ontario Decision Framework is similar in some respects to frameworks used in HTA worldwide. Its distinctive characteristics are that: it is based on an explicit set of social values; HTA paradigms (evidence based medicine, economics, and bioethics/social science) are used to aggregate decision attributes; and that it is rooted in a theoretical framework of optimal decision making, rather than one related to broad social goals, such as health or welfare maximization.
- Published
- 2018
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37. Trade-Offs: Pros and Cons of Being a Doctor and Patient in Canada.
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Cram P, Dhalla I, and Kwan JL
- Subjects
- Attitude of Health Personnel, Canada, Delivery of Health Care economics, Health Expenditures statistics & numerical data, Humans, State Medicine economics, United States, Delivery of Health Care standards, State Medicine standards, Universal Health Insurance economics
- Published
- 2017
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38. Fatal overdoses involving hydromorphone and morphine among inpatients: a case series.
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Lowe A, Hamilton M, Greenall BScPhm MHSc J, Ma J, Dhalla I, and Persaud N
- Abstract
Background: Opioids have narrow therapeutic windows, and errors in ordering or administration can be fatal. The purpose of this study was to describe deaths involving hydromorphone and morphine, which have similar-sounding names, but different potencies., Methods: In this case series, we describe deaths of patients admitted to hospital or residents of long-term care facilities that involved hydromorphone and morphine. We searched for deaths referred to the Patient Safety Review Committee of the Office of the Chief Coroner for Ontario between 2007 and 2012, and subsequently reviewed by 2014. We reviewed each case to identify intervention points where errors could have been prevented., Results: We identified 8 cases involving decedents aged 19 to 91 years. The cases involved errors in prescribing, order processing and transcription, dispensing, administration and monitoring. For 7 of the 8 cases, there were multiple (2 or more) possible intervention points. Six cases may have been prevented by additional patient monitoring, and 5 cases involved dispensing errors., Interpretation: Opioid toxicity deaths in patients living in institutions can be prevented at multiple points in the prescribing and dispensing processes. Interventions aimed at preventing errors in hydromorphone and morphine prescribing, administration and patient monitoring should be implemented and rigorously evaluated., Competing Interests: Competing interests: None declared.
- Published
- 2017
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39. Robot-assisted hysterectomy for endometrial and cervical cancers: a systematic review.
- Author
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Nevis IF, Vali B, Higgins C, Dhalla I, Urbach D, and Bernardini MQ
- Subjects
- Female, Humans, Endometrial Neoplasms surgery, Hysterectomy methods, Robotic Surgical Procedures methods, Uterine Cervical Neoplasms surgery
- Abstract
Total and radical hysterectomies are the most common treatment strategies for early-stage endometrial and cervical cancers, respectively. Surgical modalities include open surgery, laparoscopy, and more recently, minimally invasive robot-assisted surgery. We searched several electronic databases for randomized controlled trials and observational studies with a comparison group, published between 2009 and 2014. Our outcomes of interest included both perioperative and morbidity outcomes. We included 35 observational studies in this review. We did not find any randomized controlled trials. The quality of evidence for all reported outcomes was very low. For women with endometrial cancer, we found that there was a reduction in estimated blood loss between the robot-assisted surgery compared to both laparoscopy and open surgery. There was a reduction in length of hospital stay between robot-assisted surgery and open surgery but not laparoscopy. There was no difference in total lymph node removal between the three modalities. There was no difference in the rate of overall complications between the robot-assisted technique and laparoscopy. For women with cervical cancer, there were no differences in estimated blood loss or removal of lymph nodes between robot-assisted and laparoscopic procedure. Compared to laparotomy, robot-assisted hysterectomy for cervical cancer showed an overall reduction in estimated blood loss. Although robot-assisted hysterectomy is clinically effective for the treatment of both endometrial and cervical cancers, methodologically rigorous studies are lacking to draw definitive conclusions.
- Published
- 2017
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40. Hospital Readmissions in a Community-based Sample of Homeless Adults: a Matched-cohort Study.
- Author
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Saab D, Nisenbaum R, Dhalla I, and Hwang SW
- Subjects
- Adult, Cohort Studies, Female, Humans, Male, Middle Aged, Ontario epidemiology, Ill-Housed Persons, Patient Readmission trends, Poverty trends, Residence Characteristics
- Abstract
Background: Hospital readmission rates are a widely used quality indicator that may be elevated in disadvantaged populations., Objective: The objective of this study was to compare the hospital readmission rate among individuals experiencing homelessness with that of a low-income matched control group, and to identify risk factors associated with readmission within the group experiencing homelessness., Design: We conducted a 1:1 matched cohort study comparing 30-day hospital readmission rates between homeless patients and low-income controls matched on age, sex and primary reason for admission. Multivariate analyses using generalized estimating equations were used to assess risk factors associated with 30-day readmission in the homeless cohort., Participants: This study examined a cohort of 1,165 homeless adults recruited at homeless shelters and meal programs in Toronto, Ontario, between 6 December 2004 and 20 December 2005., Main Measures: The primary outcome was the occurrence of an unplanned medical or surgical readmission within 30 days of discharge from hospital., Key Results: Between 6 December 2004 and 31 March 2009, homeless participants (N = 203) had 478 hospitalizations and a 30-day readmission rate of 22.2 %, compared to 300 hospitalizations and a readmission rate of 7.0 % among matched controls (OR = 3.79, 95 % CI 1.93-7.39). In the homeless cohort, having a primary care physician (OR = 2.65, 95 % CI 1.05-6.73) and leaving against medical advice (OR = 1.96, 95 % CI 0.99-3.86) were associated with an increased risk of 30-day readmission., Conclusions: Homeless patients had nearly four times the odds of being readmitted within 30-days as compared to low-income controls matched on age, sex and primary reason for admission to hospital. Further research is needed to evaluate interventions to reduce readmissions among this patient population.
- Published
- 2016
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41. Mechanical Thrombectomy in Acute Ischemic Stroke: A Systematic Review.
- Author
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Lambrinos A, Schaink AK, Dhalla I, Krings T, Casaubon LK, Sikich N, Lum C, Bharatha A, Pereira VM, Stotts G, Saposnik G, Kelloway L, Xie X, and Hill MD
- Subjects
- Databases, Factual statistics & numerical data, Humans, Randomized Controlled Trials as Topic, Brain Ischemia complications, Stroke etiology, Stroke surgery, Thrombectomy methods
- Abstract
Although intravenous thrombolysis increases the probability of a good functional outcome in carefully selected patients with acute ischemic stroke, a substantial proportion of patients who receive thrombolysis do not have a good outcome. Several recent trials of mechanical thrombectomy appear to indicate that this treatment may be superior to thrombolysis. We therefore conducted a systematic review and meta-analysis to evaluate the clinical effectiveness and safety of new-generation mechanical thrombectomy devices with intravenous thrombolysis (if eligible) compared with intravenous thrombolysis (if eligible) in patients with acute ischemic stroke caused by a proximal intracranial occlusion. We systematically searched seven databases for randomized controlled trials published between January 2005 and March 2015 comparing stent retrievers or thromboaspiration devices with best medical therapy (with or without intravenous thrombolysis) in adults with acute ischemic stroke. We assessed risk of bias and overall quality of the included trials. We combined the data using a fixed or random effects meta-analysis, where appropriate. We identified 1579 studies; of these, we evaluated 122 full-text papers and included five randomized control trials (n=1287). Compared with patients treated medically, patients who received mechanical thrombectomy were more likely to be functionally independent as measured by a modified Rankin score of 0-2 (odds ratio, 2.39; 95% confidence interval, 1.88-3.04; I2=0%). This finding was robust to subgroup analysis. Mortality and symptomatic intracerebral hemorrhage were not significantly different between the two groups. Mechanical thrombectomy significantly improves functional independence in appropriately selected patients with acute ischemic stroke.
- Published
- 2016
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42. Increase in Utilization of Afterhours Medical Imaging: A Study of Three Canadian Academic Centers.
- Author
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Chaudhry S, Dhalla I, Lebovic G, Rogalla P, and Dowdell T
- Subjects
- Academic Medical Centers trends, Adult, After-Hours Care trends, Diagnostic Imaging trends, Emergency Service, Hospital statistics & numerical data, Emergency Service, Hospital trends, Forecasting, Health Facility Size statistics & numerical data, Health Facility Size trends, Health Services Needs and Demand statistics & numerical data, Health Services Needs and Demand trends, Hospital Bed Capacity statistics & numerical data, Humans, Length of Stay statistics & numerical data, Length of Stay trends, Medicine statistics & numerical data, Medicine trends, Ontario, Utilization Review statistics & numerical data, Utilization Review trends, Academic Medical Centers statistics & numerical data, After-Hours Care statistics & numerical data, Diagnostic Imaging statistics & numerical data
- Abstract
Objectives: The objectives of our study were to assess trends in afterhours medical imaging utilization for emergency department (ED) and inpatient (IP) patient populations from 2006-2013, including analysis by modality and specialty and with adjustment for patient volume., Methods: For this retrospective study, we reviewed the number of CT, MRI, and ultrasound studies performed for the ED and IP patients during the afterhours time period (5pm - 8am on weekdays and 24 hours on weekends and statutory holidays) from 2006-2013 at three different Canadian academic hospitals. We used the Jonckheere-Terpstra (JT) test to determine statistical significance of imaging and patient volume trends. A regression model was used to examine whether there was an increasing trend over time in the volume of imaging tests per 1000 patients., Results: For all three sites from 2006-2013 during the afterhours time period: There was a statistically significant increasing trend in total medical imaging volume, which also held true when the volumes were assessed by modality and by specialty. There was a statistically significant increasing trend in ED and IP patient volume. When medical imaging volumes were adjusted for patient volumes, there was a statistically significant increasing trend in imaging being performed per patient., Conclusion: Afterhours medical imaging volumes demonstrated a statistically significant increasing trend at all three sites from 2006-2013 when assessed by total volume, modality, and specialty. During the same time period and at all three sites, the ED and IP patient volumes also demonstrated a statistically significant increasing trend with more medical imaging, however, being performed per patient., (Copyright © 2015 Canadian Association of Radiologists. Published by Elsevier Inc. All rights reserved.)
- Published
- 2015
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43. The perspectives of patients, family members and healthcare professionals on readmissions: preventable or inevitable?
- Author
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Jeffs L, Dhalla I, Cardoso R, and Bell CM
- Subjects
- Academic Medical Centers, Adult, Aged, Canada, Disease Progression, Female, Humans, Internal Medicine, Interviews as Topic, Male, Middle Aged, Quality Improvement, Quality of Health Care, Risk Factors, Family psychology, Health Personnel psychology, Patient Readmission, Patients psychology
- Abstract
An understanding of what complex medical patients with chronic conditions, family members and healthcare professionals perceive to be the key reasons for the readmission is important to preventing their occurrence. In this context, we undertook a study to understand the perceptions of patients, family members and healthcare professionals regarding the reasons for, and preventability of, readmissions. An exploratory case design with semi-structured interviews was conducted with 49 participants, including patients, family members, nurses, case managers, physicians, discharge planners from a general internal medicine unit at a large and academic hospital. Data were analyzed using a directed content analysis approach that involved three investigators. Two contrasting themes emerged from the analysis of interview data set. The first theme was readmissions as preventable occurrences. Our analyses elucidated contributing factors to readmissions during the patients' hospital stay and after the patients were discharged. The second theme was readmissions as inevitable, occurring due to the progression of disease. Our study findings indicate that some readmissions are perceived to be inevitable due to the burden of disease while others are perceived to be preventable and associated with factors both in hospital and post-discharge. Continued interprofessional efforts are required to identify patients at risk for readmission and to organize and deliver care to improve health outcomes after hospitalization.
- Published
- 2014
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44. Correcting the record.
- Author
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Law M, Kratzer J, and Dhalla I
- Subjects
- Humans, Biomedical Research legislation & jurisprudence, Periodicals as Topic, Scientific Misconduct legislation & jurisprudence
- Published
- 2014
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45. Integrated client care for frail older adults in the community: preliminary report on a system-wide approach.
- Author
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Goldhar J, Daub S, Dhalla I, Ellison P, Purbhoo D, and Sinha SK
- Subjects
- Aged, Delivery of Health Care organization & administration, Humans, Models, Organizational, Ontario, Program Development, Program Evaluation, Delivery of Health Care, Integrated organization & administration, Frail Elderly, Health Services for the Aged organization & administration
- Abstract
The Toronto Central Community Care Access Centre is leading a collaborative local health integration network systemic change initiative to implement and evaluate a practical model of integrated care for older adults with complex needs. The approach is embedded in the community where older adults and their families live and is designed to first and foremost improve the quality of care while ultimately bending the cost curve. The model is leveraging and aligning existing system resources by bringing together sectors from across the health system to create ways of working that build capacity in the system to be more responsive to this population. Outcomes to date will be discussed and next steps described. The secondary goal was to understand the key elements of this integration that can be scaled locally and across the province., (Copyright © 2014 Longwoods Publishing.)
- Published
- 2014
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46. Incidence of potentially avoidable urgent readmissions and their relation to all-cause urgent readmissions.
- Author
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van Walraven C, Jennings A, Taljaard M, Dhalla I, English S, Mulpuru S, Blecker S, and Forster AJ
- Subjects
- Aged, Aged, 80 and over, Emergency Medical Services, Female, Humans, Logistic Models, Middle Aged, Ontario, Prospective Studies, Quality of Health Care statistics & numerical data, Patient Readmission statistics & numerical data
- Abstract
Background: Urgent, unplanned hospital readmissions are increasingly being used to gauge the quality of care. We reviewed urgent readmissions to determine which were potentially avoidable and compared rates of all-cause and avoidable readmissions., Methods: In a multicentre, prospective cohort study, we reviewed all urgent readmissions that occurred within six months among patients discharged to the community from 11 teaching and community hospitals between October 2002 and July 2006. Summaries of the readmissions were reviewed by at least four practising physicians using standardized methods to judge whether the readmission was an adverse event (poor clinical outcome due to medical care) and whether the adverse event could have been avoided. We used a latent class model to determine whether the probability that each readmission was truly avoidable exceeded 50%., Results: Of the 4812 patients included in the study, 649 (13.5%, 95% confidence interval [CI] 12.5%-14.5%) had an urgent readmission within six months after discharge. We considered 104 of them (16.0% of those readmitted, 95% CI 13.3%-19.1%; 2.2% of those discharged, 95% CI 1.8%-2.6%) to have had a potentially avoidable readmission. The proportion of patients who had an urgent readmission varied significantly by hospital (range 7.5%-22.5%; χ(2) = 92.9, p < 0.001); the proportion of readmissions deemed avoidable did not show significant variation by hospital (range 1.2%-3.7%; χ(2) = 12.5, p < 0.25). We found no association between the proportion of patients who had an urgent readmission and the proportion of patients who had an avoidable readmission (Pearson correlation 0.294; p = 0.38). In addition, we found no association between hospital rankings by proportion of patients readmitted and rankings by proportion of patients with an avoidable readmission (Spearman correlation coefficient 0.28, p = 0.41)., Interpretation: Urgent readmissions deemed potentially avoidable were relatively uncommon, comprising less than 20% of all urgent readmissions following hospital discharge. Hospital-specific proportions of patients who were readmitted were not related to proportions with a potentially avoidable readmission.
- Published
- 2011
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47. Geographical variation in opioid prescribing and opioid-related mortality in Ontario.
- Author
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Gomes T, Juurlink D, Moineddin R, Gozdyra P, Dhalla I, Paterson M, and Mamdani M
- Subjects
- Adolescent, Adult, Drug Prescriptions, Female, Humans, Male, Middle Aged, Ontario epidemiology, Practice Patterns, Physicians' statistics & numerical data, Young Adult, Analgesics, Opioid poisoning, Drug Overdose mortality, Geography
- Published
- 2011
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48. Moving from opacity to transparency in pharmaceutical policy.
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Dhalla I and Laupacis A
- Subjects
- Canada, Costs and Cost Analysis, Fees, Pharmaceutical, Humans, Drug Costs trends, Drug Utilization Review, Economics, Pharmaceutical organization & administration, Guidelines as Topic standards, Health Services Needs and Demand trends, Policy Making
- Published
- 2008
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49. Canada's health care system and the sustainability paradox.
- Author
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Dhalla I
- Subjects
- Canada, Health Expenditures legislation & jurisprudence, Humans, Federal Government, Financial Management trends, Health Expenditures trends
- Published
- 2007
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50. Sex differences in inappropriate prescribing among elderly veterans.
- Author
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Bierman AS, Pugh MJ, Dhalla I, Amuan M, Fincke BG, Rosen A, and Berlowitz DR
- Subjects
- Aged, Aged, 80 and over, Cohort Studies, Databases, Factual, Female, Humans, Male, Medical Errors statistics & numerical data, Odds Ratio, Regression Analysis, Retrospective Studies, Sex Factors, United States epidemiology, Drug Prescriptions statistics & numerical data, Veterans statistics & numerical data
- Abstract
Background: Previous studies have suggested that older women may be more likely than older men to receive potentially inappropriate prescriptions. A better understanding of sex differences in inappropriate prescribing can help inform the development of effective interventions., Objective: This study was conducted to assess sex differences in rates of inappropriate prescribing before and after accounting for potentially appropriate indications and to examine sex differences in predictors of inappropriate drug use., Methods: This was a retrospective cohort study of administrative data from the national Veterans Health Administration (VA). Participants were veterans aged >or=65 years who had >or=1 patient visit at VA outpatient facilities in fiscal year 1999 (FY99) and 2000 (FY00). The main outcome measure was the diagnosis-adjusted prevalence of 33 potentially inappropriate medications as judged by the Beers criteria in FY00: overall, by individual drug, and in 3 categories grouped by potential indication ("always avoid," "rarely appropriate," and "some indications")., Results: The study population included 965,756 patients (946,641 men and 19,115 women). Women were more likely than men to receive inappropriate medications overall and in all 3 categories, even after accounting for diagnoses that may have justified the prescription. Women were more likely to receive 16 of the 33 medications (analgesics, psychotropic drugs, and anticholinergic agents), and men were more likely to receive 3 of the 33. After controlling for sociodemographic characteristics, number of medications, and care characteristics, women remained more likely to receive inappropriate drugs. Receipt of geriatric care was equally protective for men and women, although only a small proportion received this care. Psychiatric comorbidity was associated with inappropriate prescribing for men but not for women., Conclusions: Analgesic, psychotropic, and anticholinergic medications that should be avoided contributed to higher rates of inappropriate drug use among older women than among older men. Targeted efforts to avoid these medications in older women may help reduce overall rates of inappropriate prescribing. Sex-stratified reporting of quality indicators that assess inappropriate prescribing among community-dwelling elders would help monitor the effectiveness of improvement efforts.
- Published
- 2007
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