Research Topics
| Chaim M BellSummaryAffiliation: St. Michael's Hospital Country: Canada Publications
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Detail Information
Publications
What is the value and impact of quality and safety teams? A scoping reviewDeborah E White
Faculty of Nursing, University of Calgary, 2500 University Drive NW, Calgary, Alberta T2N 1N4, Canada
Implement Sci 6:97. 2011..abstract:..- Enhanced weekend service: an affordable means to increased hospital procedure volumeChaim M Bell
Department of Medicine, University of Toronto, Toronto, Ont
CMAJ 172:503-4. 2005 - Initiation of benzodiazepines in the elderly after hospitalizationChaim M Bell
Department of Medicine, St Michael s Hospital, 30 Bond Street, Toronto, Ontario, Canada, M5B 1W8
J Gen Intern Med 22:1024-9. 2007..To estimate the rate of new chronic benzodiazepine use after hospitalization in older adults not previously prescribed with benzodiazepines... - "You're not my obstetrician" (and it may not matter)Chaim M Bell
Department of Medicine, University of Toronto, Toronto, Ont
CMAJ 177:372-3. 2007 
Surgeon volumes and selected patient outcomes in cataract surgery: a population-based analysisChaim M Bell
Department of Medicine, University of Toronto, Toronto, Canada
Ophthalmology 114:405-10. 2007..To study the association of annual surgeon volume of cataract procedures with the risk of postoperative adverse events...- Potentially unintended discontinuation of long-term medication use after elective surgical proceduresChaim M Bell
Department of Medicine, University of Toronto, Toronto, Ontario, Canada
Arch Intern Med 166:2525-31. 2006..Transitions between health care settings represent vulnerable periods for medical error. Discontinuation of long-term medication use may occur during discharge from the hospital to the community... - Discontinuity of chronic medications in patients discharged from the intensive care unitChaim M Bell
Faculty of Medicine, University of Toronto, Toronto, ON, Canada
J Gen Intern Med 21:937-41. 2006..Intensive care unit (ICU) admission may connote an elevated risk of unintentional chronic medication discontinuation because of its focus on acute illnesses and the multiple care transitions... - Bias in published cost effectiveness studies: systematic reviewChaim M Bell
St Michael s Hospital, Toronto, Ontario, Canada M5B 1W8
BMJ 332:699-703. 2006.... - Pay for performance: learning about qualityChaim M Bell
Institute for Clinical Evaluative Sciences, Toronto, Ont
CMAJ 176:1717-9. 2007 - Association of communication between hospital-based physicians and primary care providers with patient outcomesChaim M Bell
Department of Medicine, University of Toronto, Toronto, ON, Canada
J Gen Intern Med 24:381-6. 2009..This separation of hospital and ambulatory care may result in important care discontinuities after discharge. We sought to determine whether communication between hospital-based physicians and PCPs influences patient outcomes... - Waiting for urgent procedures on the weekend among emergently hospitalized patientsChaim M Bell
Department of Medicine, University of Toronto, Canada
Am J Med 117:175-81. 2004..We evaluated the use of selected urgent procedures for emergently hospitalized patients and measured the time until procedure based upon the day of hospital admission... 
Association between tamsulosin and serious ophthalmic adverse events in older men following cataract surgeryChaim M Bell
Institute for Clinical Evaluative Sciences, Toronto, ON, Canada
JAMA 301:1991-6. 2009..No studies have documented whether use of tamsulosin or other alpha-blocker drug therapies affect the risk of serious postoperative adverse events...- Association of ICU or hospital admission with unintentional discontinuation of medications for chronic diseasesChaim M Bell
Department of Health Policy, Management, and Evaluation, Keenan Research Centre in Li Ka Shing Knowledge Institute at St Michael s Hospital, Toronto, Ontario, Canada
JAMA 306:840-7. 2011..The intensive care unit (ICU) may pose an even greater risk because of the focus on acute events and the presence of multiple transitions in care... - Cholinesterase inhibitors and adverse pulmonary events in older people with chronic obstructive pulmonary disease and concomitant dementia: a population-based, cohort studyAnne Stephenson
Women s College Research Institute, Women s College Hospital, Toronto, ON, Canada
Drugs Aging 29:213-23. 2012..Cholinesterase inhibitors (ChEIs) are a mainstay treatment for individuals with dementia. ChEIs may worsen airflow obstruction because of their pro-cholinergic properties... - Risk factors for acute endophthalmitis after cataract surgery: a population-based studyWendy V Hatch
Ophthalmology and Vision Sciences at the University of Toronto, Toronto, Canada
Ophthalmology 116:425-30. 2009..To identify risk factors for suspected acute endophthalmitis after cataract surgery... - A prospective cohort study found that provider and information continuity was low after patient discharge from hospitalCarl van Walraven
Ottawa Hospital Research Institute, Ottawa, Ontario, Canada
J Clin Epidemiol 63:1000-10. 2010..This study is a detailed examination of continuity of care in patients discharged from hospital that simultaneously measured separate components of continuity over time or determined the factors with which they are associated... - Syncope and its consequences in patients with dementia receiving cholinesterase inhibitors: a population-based cohort studySudeep S Gill
Institute for Clinical Evaluative Sciences, Toronto, Ontario, Canada
Arch Intern Med 169:867-73. 2009..These drugs can provoke symptomatic bradycardia and syncope, which may lead to permanent pacemaker insertion. Drug-induced syncope may also precipitate fall-related injuries, including hip fracture... - Does statin therapy decrease the risk for bleeding in patients who are receiving warfarin?James D Douketis
Department of Medicine, McMaster University and St Joseph s Healthcare, Hamilton, Ontario, Canada
Am J Med 120:369.e9-369.e14. 2007..Recent observations in patients with atrial fibrillation who are receiving warfarin suggest that concomitant treatment with a 3-hydroxy-3-methylglutaryl coenzyme A reductase inhibitor (statin) decreases the risk for bleeding... - A population-based study of cholinesterase inhibitor use for dementiaNathan Herrmann
Department of Psychiatry, Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada
J Am Geriatr Soc 55:1517-23. 2007.... - The relationship between variations in antipsychotic prescribing across nursing homes and short-term mortality: quality of care implicationsSusan E Bronskill
Institute for Clinical Evaluative Sciences, Toronto, Ontario
Med Care 47:1000-8. 2009..Determining the extent to which variations in antipsychotic use are a symptom of facility-level quality problems as compared with a drug safety issue is important for selecting the correct interventions to effect change... - Frequency and pattern of emergency department visits by long-term care residents--a population-based studyAndrea Gruneir
Women s College Research Institute, Women s College Hospital, Toronto, Canada
J Am Geriatr Soc 58:510-7. 2010..To obtain population-based estimates of emergency department (ED) visits by long-term care (LTC) residents... - Antipsychotic therapy and short-term serious events in older adults with dementiaPaula A Rochon
Department of Medicine, University of Toronto, Canada
Arch Intern Med 168:1090-6. 2008.... - Exploring variation in rates of polypharmacy across long term care homesSusan E Bronskill
Institute for Clinical Evaluative Sciences, Toronto, Ontario, Canada
J Am Med Dir Assoc 13:309.e15-21. 2012..We quantified the scope of this practice by exploring variation in the use of nine or more drug therapies across LTC homes... - A 10-year population-based cohort analysis of cataract surgery rates in OntarioWendy V Hatch
Department of Ophthalmology and Vision Sciences, University of Toronto, Ont
Can J Ophthalmol 42:552-6. 2007..We studied the rates and distribution of cataract surgery throughout Ontario using population-based administrative data... - Inhaled anticholinergic drug therapy and the risk of acute urinary retention in chronic obstructive pulmonary disease: a population-based studyAnne Stephenson
Department of Medicine, Keenan Research Centre, Li Ka Shing Knowledge Institute of St Michael s Hospital, Toronto, ON, Canada
Arch Intern Med 171:914-20. 2011..The systemic anticholinergic effects of IAC therapy have not been extensively studied. This study sought to determine the risk of acute urinary retention (AUR) in seniors with COPD using IACs... 
Population mortality during the outbreak of Severe Acute Respiratory Syndrome in TorontoStephen W Hwang
Centre for Research on Inner City Health, The Keenan Research Centre in the Li Ka Shing Knowledge Institute of St Michael s Hospital, Toronto, Canada
BMC Public Health 7:93. 2007..The objective of this study was to determine if the period of these infection control measures was associated with changes in overall population mortality due to causes other than SARS...- Antipsychotic drug use and mortality in older adults with dementiaSudeep S Gill
Queen s University, Kingston, Ontario, Canada
Ann Intern Med 146:775-86. 2007..Antipsychotic drugs are widely used to manage behavioral and psychological symptoms in dementia despite concerns about their safety... - Antibiotic use in long-term care facilitiesNick Daneman
Institute for Clinical Evaluative Sciences, Toronto, Ontario, Canada
J Antimicrob Chemother 66:2856-63. 2011..Our goal was to examine the prevalence of antibiotic use among long-term care facility residents and the extent of variability across these institutions... - Long-term analgesic use after low-risk surgery: a retrospective cohort studyAsim Alam
Department of Anesthesiology, University of Toronto, Ontario, Canada
Arch Intern Med 172:425-30. 2012..This study evaluated the risk of long-term analgesic use after low-risk surgery in older adults not previously prescribed analgesics... - The characteristics of physicians disciplined by professional colleges in CanadaAsim Alam
Department of Anesthesiology, St Michael s Hospital, University of Toronto, Toronto, Ontario, Canada
Open Med 5:e166-72. 2011..To date, no national data exist for Canadian physicians disciplined for professional misconduct. We sought to describe the characteristics of physicians disciplined by Canadian professional licensing authorities... - Serious events in older Ontario residents receiving bowel preparations for outpatient colonoscopy with various comorbidity profiles: a descriptive, population-based studyJoanne Man Wai Ho
University of Toronto, Toronto, Ontario, Canada
Can J Gastroenterol 26:436-40. 2012..Little is known about adverse events associated with these preparations, particularly in older patients or patients with medical comorbidities... - Stroke rates after introduction of vascular endothelial growth factor inhibitors for macular degeneration: a time series analysisRobert J Campbell
Department of Ophthalmology, Queen s University, Kingston, Canada
Ophthalmology 119:1604-8. 2012..To assess whether stroke rates among patients with retinal disease were influenced by the rapid and sequential uptakes of bevacizumab and ranibizumab for age-related macular degeneration (AMD)... - The safety of levofloxacin in elderly patients on warfarinLynfa F Stroud
Department of Medicine, University of Toronto, Toronto, Ontario, Canada
Am J Med 118:1417. 2005 - Alcohol sales and risk of serious assaultJoel G Ray
Department of Medicine, University of Toronto, Toronto, Ontario, Canada
PLoS Med 5:e104. 2008..We assessed the risk of being hospitalized due to assault in association with retail alcohol sales across Ontario... - The independent association of provider and information continuity on outcomes after hospital discharge: implications for hospitalistsCarl van Walraven
Ottawa Hospital Research Institute, Ottawa, Ontario, Canada
J Hosp Med 5:398-405. 2010..To determine how this influenced patient outcomes, we examined the independent association of several physician continuity and information continuity measures on death or urgent readmission after discharge from hospital... - Continental Divide? The attitudes of US and Canadian oncologists on the costs, cost-effectiveness, and health policies associated with new cancer drugsScott R Berry
Sunnybrook Odette Cancer Center, 2075 Bayview Ave, Toronto, Ontario, Canada
J Clin Oncol 28:4149-53. 2010..We compared their attitudes regarding the costs and cost-effectiveness of medications and related health policy... - Non-adherence to recommendations for further testing after outpatient CT and MRIJohn J You
Department of Medicine, McMaster University, Hamilton, Ontario, Canada
Am J Med 123:557.e1-8. 2010..Little is known about adherence to recommendations for further testing after outpatient computed tomography (CT) and magnetic resonance imaging (MRI)... - Differences in operative mortality between high- and low-volume hospitals in Ontario for 5 major surgical procedures: estimating the number of lives potentially saved through regionalizationDavid R Urbach
Department of Surgery, University of Toronto, Toronto, Ont
CMAJ 168:1409-14. 2003..We estimated the absolute number of operative deaths that could potentially be avoided if 5 major surgical procedures in Ontario were restricted to HVHs... - Potential savings of harmonising hospital and community formularies for chronic disease medications initiated in hospitalLauren Lapointe-Shaw
Department of Medicine, University of Toronto, Toronto, Ontario
PLoS ONE 7:e39737. 2012..We sought to determine how much public money could be saved on chronic medications if hospitals promoted the initiation of agents with the lowest outpatient formulary prices... - Adverse events with intravitreal injection of vascular endothelial growth factor inhibitors: nested case-control studyRobert J Campbell
Department of Ophthalmology, Queen s University, Kingston, ON, Canada
BMJ 345:e4203. 2012..To assess the risk of systemic adverse events associated with intravitreal injections of vascular endothelial growth factor inhibiting drugs... - Quality measures for medication continuity in long-term care facilities, using a structured panel processChaim M Bell
St Michaels Hospital, Keenan Research Centre in the Li Ka Shing Knowledge Institute, Toronto, ON, Canada
Drugs Aging 29:319-27. 2012..ObjectIVE: The aim of the study was to develop quality indicators signalling the potential discontinuation of previously prescribed medications for chronic diseases when residents return to LTC following an acute-care hospitalization... - Unintentional discontinuation of long-term medications for chronic diseases after hospitalizationChaim M Bell
Institute for Clinical Evaluative Sciences, Toronto
Healthc Q 10:26-8. 2007..In this way, hospitalization could provide an opportunity to encourage medication adherence rather than be a contributor to its breakdown... - Weekend hospital admission, acute kidney injury, and mortalityMatthew T James
Department of Medicine, University of Calgary, Alberta, Canada
J Am Soc Nephrol 21:845-51. 2010..In conclusion, among patients hospitalized with AKI, weekend admission is associated with a higher risk for death compared with admission on a weekday... - Incidence and economic burden of adverse drug reactions among elderly patients in Ontario emergency departments: a retrospective studyChen Wu
Institute of Health Policy, Management and Evaluation, University of Toronto, Toronto, ON, Canada
Drug Saf 35:769-81. 2012..There are few studies on the overall incidence and costs of ADRs... - Lapses in safety in end-stage renal disease patients admitted to surgical servicesZiv Harel
Division of Nephrology, University of Toronto, Toronto, Ontario, Canada
Hemodial Int 16:286-93. 2012..As such, it is imperative that these patients be closely monitored in order to mitigate against potential adverse events... - An evaluation framework for funding drugs for rare diseasesEric Winquist
London Health Sciences Centre and Schulich School of Medicine and Dentistry, Western University, London, ON, Canada
Value Health 15:982-6. 2012..The Ontario Public Drug Programs convened the Drugs for Rare Diseases Working Group to develop a policy for assessing these drugs... - The characteristics of psychiatrists disciplined by professional colleges in CanadaAsim Alam
Department of Anesthesiology, Hospital for Sick Children, Toronto, Canada Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, Canada
PLoS ONE 7:e50558. 2012..It is unclear whether psychiatrists are more likely to commit medical misconduct offences than non-psychiatrists, and if the nature of these offences is different... - Variation and consternation: access to unfunded cancer drugs in CanadaScott R Berry
Sunnybrook Odette Cancer Centre University of Toronto Li Ka Shing Knowledge Institute, St Michael s Hospital Institute for Clinical Evaluative Sciences, Toronto McMaster University Juravinski Cancer Centre, Hamilton Health Sciences, Hamilton and Peel Regional Cancer Centre, University of Toronto, Mississauga, Ontario, Canada
J Oncol Pract 8:35-9. 2012..We assessed Canadian medical oncologists' access to and attitudes toward accessing unfunded intravenous cancer drugs... - Dihydropyridine calcium channel blockers and the progression of parkinsonismConnie Marras
Division of Neurology, Toronto Western Hospital, and University of Toronto, Toronto, Ontario, Canada
Ann Neurol 71:362-9. 2012..A study was undertaken to test the association between dihydropyridine calcium channel blocker use and the time to important milestones of disease progression among patients with parkinsonism... - Differences in generic drug prices between the US and CanadaMalcolm Gooi
Faculty of Medicine, University of Toronto, Toronto, Canada
Appl Health Econ Health Policy 6:19-26. 2008..It has long been recognized that brand name prescription medications are more expensive in the US than in Canada. However, non-peer-reviewed reports contend that this is not the case for generic medications... - Survival to discharge among patients treated with continuous renal replacement therapyRon Wald
Department of Medicine, University of Toronto, Toronto, ON, Canada
Hemodial Int 10:82-7. 2006..The majority of CRRT patients who survive their critical illness are independent of dialysis at the time of hospital discharge... - Cohort study of surgical bypass to the gallbladder or bile duct for the palliation of jaundice due to pancreatic cancerDavid R Urbach
Department of Surgery, Toronto General Hospital Research Institute, Ontario, Canada
Ann Surg 237:86-93. 2003..To compare patterns in mortality and the use of subsequent biliary drainage interventions (surgical, endoscopic, and percutaneous) associated with the different types of biliary bypass... - Privacy of patients' information in hospital lifts: observational studySimone N Vigod
St Michael's Hospital, University of Toronto, 30 Bond Street, Toronto, ON, Canada M5B 1W8
BMJ 327:1024-5. 2003 - Use of a structured panel process to define quality metrics for antimicrobial stewardship programsAndrew M Morris
Mount Sinai Hospital and University Health Network, Toronto, Ontario, Canada
Infect Control Hosp Epidemiol 33:500-6. 2012..There is no standardized approach to evaluate the impact of these programs... - Evaluation of deficiencies in current discharge summaries for dialysis patients in CanadaZiv Harel
Division of Nephrology, St Michael s Hospital, University of Toronto, Toronto, Ontario
J Multidiscip Healthc 5:77-84. 2012..These patients have unique and complex health care needs that may not be effectively communicated on standard discharge summaries, which may result in potential medical errors and adverse events... - The effect of patient selection on comorbidity-adjusted operative mortality risk. Implications for outcomes studies of surgical proceduresDavid R Urbach
Department of Surgery, University of Toronto, Toronto, Ontario, Canada
J Clin Epidemiol 55:381-5. 2002.... - Users' guide to the surgical literature. Case-control studies in surgical journalsAlexandra Mihailovic
Department of Surgery, Toronto General Hospital Research Institute, Toronto, Ont
Can J Surg 48:148-51. 2005..2, CI 0.1-0.7) than other types of studies, such as those focusing on risk factors for disease. CONCLUSIONS: The term "case-control study" is frequently misused in the surgical literature... - Radiology resident interpretation of on-call CT pulmonary angiogramsPatrick Cervini
Department of Diagnostic Imaging, Mount Sinai Hospital, Toronto, Ontario, Canada M5G 2N2
Acad Radiol 15:556-62. 2008..To evaluate the interpretation of computed tomographic pulmonary angiograms performed outside of regular reporting hours, comparing the initial interpretation by the radiology resident to the attending radiologist... - Interobserver reliability of urine sediment interpretationRon Wald
Department of Medicine, Division of Nephrology, St Michael s Hospital, Toronto, ON, Canada
Clin J Am Soc Nephrol 4:567-71. 2009..Urine sediment interpretation is frequently used in the evaluation of patients with kidney disease. There has been no systematic evaluation of the reliability of this diagnostic maneuver... - Variation in prices charged to patients for specialty intraocular lenses inserted during universally covered cataract surgeryJoshua M Robert
Faculty of Medicine, University of Toronto, Toronto, Ontario, Canada
PLoS ONE 7:e35179. 2012..This practice creates the potential for inequitable pricing where the medical service provider is also the retailer. We measured the variation in prices between cataract surgeons for the same IOL and associated testing... - Frequency and factors influencing publication of abstracts presented at three major nephrology meetingsZiv Harel
Division of Nephrology, University of Toronto, Toronto, Ontario, Canada
Int Arch Med 4:40. 2011..abstract:.. - Renal athersosclerotic revascularization evaluation (RAVE study): study protocol of a randomized trial [NCT00127738]Sheldon W Tobe
Departments of Medicine and Radiology, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, Canada
BMC Nephrol 8:4. 2007.... - Comparison of public and private bariatric surgery services in CanadaAllan R Martin
Department of Medicine, University of Toronto, Ont, Canada
Can J Surg 54:154-69. 2011..Private clinics currently offer AGB with minimal wait times. We sought to compare RYGB in public facilities with AGB in private clinics in terms of cost, wait times and certain aspects of patient care... - Electronic versus dictated hospital discharge summaries: a randomized controlled trialDavid M Maslove
Faculty of Medicine, University of Toronto, Toronto, ON, Canada
J Gen Intern Med 24:995-1001. 2009..Discharge summaries have been used to communicate essential information between hospital-based physicians and primary care physicians (PCPs), and may reduce rates of adverse events after discharge... - Patterns of care and outcomes after computed tomography scans for headacheJohn J You
Departments of Medicine and of Clinical Epidemiology and Biostatistics, McMaster University, Hamilton, Ontario, Canada
Am J Med 124:58-63.e1. 2011..concerns exist about potential overuse of computed tomography (CT) scans for headache in ambulatory care... - Risk of death or readmission among people discharged from hospital on FridaysCarl van Walraven
Clinical and Epidemiology Unit, Ottawa Health Research Institute, Ottawa Hospital, ON
CMAJ 166:1672-3. 2002 - Information exchange among physicians caring for the same patient in the communityCarl van Walraven
Clinical Epidemiology Program, Ottawa Health Research Institute, ASB1 003, Ottawa Hospital, Civic Campus, 1053 Carling Ave, Ottawa, ONK1Y4E9
CMAJ 179:1013-8. 2008..This study determined the probability that patient information from previous visits with other physicians was available for a current physician visit... - Weekend worriersDonald A Redelmeier
N Engl J Med 356:1164-5. 2007 - Variation in intensive care unit outcomes by day of week: no weak-endChaim M Bell
Intensive Care Med 30:739-41. 2004 - Economic messages in prescription drug advertisements in medical journalsPeter J Neumann
Program on the Economic Evaluation of Medical Technology, Center for Risk Analysis Harvard School of Public Health, Boston, Massachusetts 02115, USA
Med Care 40:840-5. 2002..Our objectives were to examine how often prescription drug advertisements in leading medical journals contain economic messages, and to determine the types of promotional claims made and whether supporting evidence is provided... - The 2008 Canadian Hypertension Education Program recommendations for the management of hypertension: part 2 - therapyNadia A Khan
Division of General Internal Medicine, University of British Columbia, Vancouver, Canada
Can J Cardiol 24:465-75. 2008..To update the evidence-based recommendations for the prevention and management of hypertension in adults...