Research Topics
| Alan J ForsterSummaryAffiliation: Ottawa Health Research Institute Country: Canada Publications
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Publications
Patient-level factors associated with methicillin-resistant Staphylococcus aureus carriage at hospital admission: a systematic reviewAlan J Forster
Performance Measurement, The Ottawa Hospital, Ottawa, ON, Canada
Am J Infect Control 41:214-20. 2013..To characterize high-risk populations, we conducted this systematic review to identify patient-level factors associated with MRSA carriage at hospital admission...
Improving patient safety through the systematic evaluation of patient outcomesAlan J Forster
The Ottawa Hospital, The Department of Medicine, University of Ottawa, The Clinical Epidemiology Program, Ottawa Hospital Research Institute, Ottawa, Ont, Canada
Can J Surg 55:418-25. 2012..We also present an overview of how patient safety can be assessed and the strengths and weaknesses of each method and comment on some of the consequences created by the absence of a systematic measurement system...- A systematic review to evaluate the accuracy of electronic adverse drug event detectionAlan J Forster
Clinical Epidemiology Program, Ottawa Hospital Research Institute, Ottawa, Ontario, Canada
J Am Med Inform Assoc 19:31-8. 2012..Electronic detection of ADEs is a promising method to identify ADEs. We performed this systematic review to characterize established electronic detection systems and their accuracy... - Reliability of the peer-review process for adverse event ratingAlan J Forster
The Ottawa Hospital, Ottawa, Ontario, Canada
PLoS ONE 7:e41239. 2012..Their identification requires the peer-review of poor outcomes, which may be unreliable. Combining physician ratings might improve the accuracy of adverse event classification... - The effect of hospital-acquired infection with Clostridium difficile on length of stay in hospitalAlan J Forster
Clinical Epidemiology Program, Ottawa Hospital Research Institute, Ottawa, Ont
CMAJ 184:37-42. 2012..We determined the independent impact of hospital-acquired infection with C. difficile on length of stay in hospital... - 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..The purpose of this study was to conduct a scoping review of the literature about the establishment and impact of quality and safety team initiatives in acute care... 
Using an interactive voice response system to improve patient safety following hospital dischargeAlan J Forster
Department of Medicine, University of Ottawa, Ottawa, ON, Canada
J Eval Clin Pract 13:346-51. 2007..Patients often experience complications when transitioning from hospital to home. These complications are frequently related to poor monitoring. An interactive voice response system (IVRS) could improve post-discharge monitoring...- Combining ratings from multiple physician reviewers helped to overcome the uncertainty associated with adverse event classificationAlan J Forster
Department of Medicine, University of Ottawa, Ottawa, Ontario, Canada
J Clin Epidemiol 60:892-901. 2007..We performed this study to quantify the misclassification rate obtained using current AE detection methods and to evaluate the effect of combining physician AE ratings... - Automated patient assessments after outpatient surgery using an interactive voice response systemAlan J Forster
Department of Medicine, University of Ottawa, Ontario, Canada
Am J Manag Care 14:429-36. 2008..To test the feasibility and utility of an interactive voice response system (IVRS) for monitoring patients after outpatient surgery... - The impact of adverse events in the intensive care unit on hospital mortality and length of stayAlan J Forster
Department of Medicine, University of Ottawa, Ottawa, Canada
BMC Health Serv Res 8:259. 2008..We performed this study to measure the independent influence of intensive care unit (ICU) based AEs on in-hospital mortality and hospital length of stay... - Identifying patients with post-discharge care problems using an interactive voice response systemAlan J Forster
Department of Medicine, University of Ottawa, Ottawa, Canada
J Gen Intern Med 24:520-5. 2009..We designed an interactive voice response system (IVRS) with the intent of identifying patients who might be experiencing an AE following discharge or were at risk of developing one... - Validation of a discharge summary term search method to detect adverse eventsAlan J Forster
FRCPC, C406 1053 Carling Avenue, Ottawa, ON, Canada K1Y 4E9
J Am Med Inform Assoc 12:200-6. 2005..We performed this study to validate a previously derived method of adverse event detection using term searching in physician-dictated discharge summaries... - Using prospective clinical surveillance to identify adverse events in hospitalAlan J Forster
The Ottawa Hospital, ON, Canada
BMJ Qual Saf 20:756-63. 2011..These findings suggest that institutions will need to evaluate service-specific safety problems to set priorities and design improvement strategies... - Improving patient safety and physician accountability using the hospital credentialing processAlan J Forster
Ottawa Hospital, Ottawa, Ontario, Canada
Open Med 5:e79-86. 2011..Central licensing authorities could help to coordinate these programs on a province- or state-wide basis to ensure uniformity of standards and to avoid duplication of efforts... - Adverse events following an emergency department visitAlan J Forster
Ottawa Health Research Institute Clinical Epidemiology Program, Ottawa, Ontario, Canada
Qual Saf Health Care 16:17-22. 2007..Many studies demonstrate a high rate of treatment-related adverse outcomes or adverse events. No studies have prospectively evaluated adverse events in patients discharged home from the emergency department (ED)... - Adverse drug events occurring following hospital dischargeAlan J Forster
Division of General Internal Medicine and Ottawa Health Research Institute, University of Ottawa, Ottawa, Ontario, Canada
J Gen Intern Med 20:317-23. 2005..To describe the incidence of adverse drug events (ADEs), preventable ADEs, and ameliorable ADEs occurring after hospital discharge and their associated risk factors... - Pharmacist surveillance of adverse drug eventsAlan J Forster
Ottawa Health Research Institute, Ontario, Canada
Am J Health Syst Pharm 61:1466-72. 2004..The incidence of adverse drug events (ADEs), preventable ADEs, and potential ADEs was determined using pharmacist surveillance. Drug classes associated with ADEs were also identified... - Adverse events detected by clinical surveillance on an obstetric serviceAlan J Forster
Ottawa Health Research Institute, Department of Medicine, University of Ottawa, Ottawa, Ontario, Canada
Obstet Gynecol 108:1073-83. 2006..We performed this study to estimate the rate of adverse events and potential adverse events-errors that have a high likelihood of causing patient harm-occurring during obstetric care... - Adverse events among medical patients after discharge from hospitalAlan J Forster
Clinical Epidemiology Program, Ottawa Health Research Institute, Ottawa, Ontario, Canada
CMAJ 170:345-9. 2004..However, few data describe AEs after hospital discharge. We determined the incidence, severity, preventability and ameliorability of AEs in patients discharged from the general internal medicine service of a Canadian hospital... - Effect of a nurse team coordinator on outcomes for hospitalized medicine patientsAlan J Forster
Department of Medicine, University of Ottawa, Ottawa, Ontario, Canada
Am J Med 118:1148-53. 2005..We do not know if adding a clinical nurse specialist (CNS) to physician teams in hospitals that already have discharge planning services makes a difference... - Improving patient safety: moving beyond the "hype" of medical errorsAlan J Forster
Department of Medicine and the Ottawa Health Research Institute, University of Ottawa, Ottawa, Ont
CMAJ 173:893-4. 2005 - Ottawa Hospital Patient Safety Study: incidence and timing of adverse events in patients admitted to a Canadian teaching hospitalAlan J Forster
Ottawa Health Research Institute, Ottawa, Ont
CMAJ 170:1235-40. 2004..We evaluated characteristics of adverse events affecting patients admitted to a Canadian teaching hospital, paying particular attention to timing... - The effect of hospital occupancy on emergency department length of stay and patient dispositionAlan J Forster
Departments of Medicine, University of Ottawa, Ottawa, Ontario, Canada
Acad Emerg Med 10:127-33. 2003..Emergency department (ED) overcrowding is a common problem. Despite a widespread belief that low hospital bed availability contributes to ED overcrowding, there are few data demonstrating this effect... - The Procedural Index for Mortality Risk (PIMR): an index calculated using administrative data to quantify the independent influence of procedures on risk of hospital deathCarl van Walraven
Clinical Epidemiology Program, Ottawa Hospital Research Institute, 1053 Carling Avenue, Ottawa, K1Y 4E9, Canada
BMC Health Serv Res 11:258. 2011..This study derived and internally validated an index that can be calculated using administrative data to quantify the independent risk of hospital death after a procedure... - The influence of incidental abdominal aortic aneurysm monitoring on patient outcomesCarl van Walraven
Faculty of Medicine, University of Ottawa, Ottawa, Ontario, Canada
J Vasc Surg 54:1290-1297.e2. 2011..These are common, and many undergo incomplete radiological monitoring. The association between monitoring completeness and population-based outcomes has not been studied... - Radiographic monitoring of incidental abdominal aortic aneurysms: a retrospective population-based cohort studyCarl van Walraven
University of Ottawa, Canada
Open Med 5:e67-76. 2011..No population-based studies have assessed the management of incidental AAAs. The objective of this study was to measure the completeness of radiographic monitoring of incidental AAAs by means of a population-based analysis... - 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... - 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... - Burden of potentially avoidable anticoagulant-associated hemorrhagic and thromboembolic events in the elderlyCarl van Walraven
Clinical Epidemiology Program, Ottawa Health Research Institute, Ottawa Hospital, Civic Campus, 1053 Carling Avenue, Ottawa, Ontario, Canada
Chest 131:1508-15. 2007..However, not all anticoagulation-associated events are attributable to poor anticoagulation control, nor do all hemorrhagic or thromboembolic events occur in anticoagulated patients... - The effect of hospital-acquired Clostridium difficile infection on in-hospital mortalityNatalie Oake
Clinical Quality and Performance Management, Ottawa Hospital, Ottawa, Ontario, Canada
Arch Intern Med 170:1804-10. 2010..We conducted this study to determine the independent impact of hospital-acquired CDI on in-hospital mortality after adjusting for the time-varying nature of CDI and baseline mortality risk at hospital admission... - The incidence and severity of adverse events affecting patients after discharge from the hospitalAlan J Forster
University of Ottawa, F654-1053 Carling Avenue, Ottawa, Ontario K1Y 4E9, Canada
Ann Intern Med 138:161-7. 2003..CONCLUSION: Adverse events occurred frequently in the peridischarge period, and many could potentially have been prevented or ameliorated with simple strategies... - Incidence, follow-up, and outcomes of incidental abdominal aortic aneurysmsCarl van Walraven
Faculty of Medicine, University of Ottawa, Ontario, Canada
J Vasc Surg 52:282-9.e1-2. 2010..Incidental AAAs are important findings because they require monitoring and surgical treatment, when indicated, to prevent rupture. The prevalence of incidental AAAs and their management has not been extensively studied... - Unplanned admission after day surgery: a historical cohort study in patients with obstructive sleep apneaGregory L Bryson
Department of Anesthesiology, The Ottawa Hospital, Box 249C, Ottawa, ON, Canada
Can J Anaesth 59:842-51. 2012..This study evaluated outcomes following ambulatory surgery in patients who had previously undergone polysomnography (PSG), and compared unplanned admissions in patients diagnosed with OSA with those in patients without OSA... - Mapping out the emergency department disposition decision for high-acuity patientsLisa A Calder
Department of Emergency Medicine, University of Ottawa, Ottawa, Ontario, Canada Department of Epidemiology and Community Medicine, University of Ottawa, Ottawa, Ontario, Canada Ottawa Hospital Research Institute, Ottawa, Ontario, Canada Electronic address
Ann Emerg Med 60:567-576.e4. 2012..This study seeks to create a process map, a visual step-by-step diagram, and highlight error-prone areas for disposition decisions for high-acuity or nonambulatory ED patients... - Incidence and contributors to potential drug-drug interactions in hospitalized patientsLeanne Reimche
Clinical Epidemiology Program, Ottawa Hospital Research Institute, Ottawa, Ontario, Canada
J Clin Pharmacol 51:1043-50. 2011..27 [2.23-2.30] for logarithm), and patient service (adjusted rate ratio, 1.49 [1.46-1.52] for surgical vs medical service). Potential DDIs were present during one fifth of hospitalization time... - Does adding risk-trends to survival models improve in-hospital mortality predictions? A cohort studyJenna Wong
Clinical Epidemiology Program, Ottawa Hospital Research Institute, 1053 Carling Avenue, Ottawa, K1Y 4E9, Canada
BMC Health Serv Res 11:171. 2011..In this study, we used a unique approach to measure trends in patient hospital death risk and determined whether the incorporation of these trend measures into a survival model improved the accuracy of its risk predictions... - 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... - Interactive voice response systems for improving delivery of ambulatory careNatalie Oake
Clinical Epidemiology Program, Ottawa Health Research Institute, 1053 Carling Ave, Ottawa, Ontario K1Y 4E9, Canada
Am J Manag Care 15:383-91. 2009..To comprehensively describe the populations, interventions, and outcomes of interactive voice response system (IVRS) clinical trials... - Anticoagulation intensity and outcomes among patients prescribed oral anticoagulant therapy: a systematic review and meta-analysisNatalie Oake
Department of Medicine, University of Ottawa, and the Clinical Epidemiology Program, Ottawa Health Research Institute, Ottawa, Ont
CMAJ 179:235-44. 2008..We sought to determine the association between anticoagulation intensity and the risk of hemorrhagic and thromboembolic events. We also sought to determine how under-or overanticoagulation would influence patient outcomes... - The usefulness of administrative databases for identifying disease cohorts is increased with a multivariate modelCarl van Walraven
Clinical Epidemiology Program, Ottawa Hospital Research Institute, F660 1053 Carling Avenue, Ottawa, Ontario, Canada
J Clin Epidemiol 63:1332-41. 2010..This would allow the accurate identification of a disease cohort in an administrative database... - Derivation and validation of an index to predict early death or unplanned readmission after discharge from hospital to the communityCarl van Walraven
Clinical Epidemiology Program, Ottawa Hospital Research Institute, Ottawa Hospital, and the Department of Emergency Medicine, University of Ottawa, Ottawa, Ontario
CMAJ 182:551-7. 2010..We sought to derive and validate an index to predict the risk of death or unplanned readmission within 30 days after discharge from hospital to the community... - The effect of hospitalization on oral anticoagulation control: a population-based studyCarl van Walraven
Department of Medicine, University of Ottawa, Clinical Epidemiology Program, Ottawa Health Research Institute, C405, Ottawa Hospital, Civic Campus, 1053 Carling Avenue, Ottawa ON, K1Y 4E9, Canada
Thromb Res 119:705-14. 2007..Previous studies examining OAC control may not generalize because the patient population was select or INR capture was incomplete... - Changes in surrogate outcomes can be translated into clinical outcomes using a Monte Carlo modelCarl van Walraven
Ottawa Health Research Institute, University of Ottawa, Ontario, Canada
J Clin Epidemiol 62:1306-15. 2009..Formulae to do this are uncommon because they require primary data from multiple randomized trials that measure both the surrogate and clinical outcome... - Effect of an interactive voice response system on oral anticoagulant managementNatalie Oake
Clinical Epidemiology Program, Ottawa Health Research Institute, The Ottawa Hospital, Ottawa, ON K1Y 4E9
CMAJ 180:927-33. 2009..Monitoring oral anticoagulants is logistically challenging for both patients and medical staff. We evaluated the effect of adding an interactive voice response system to computerized decision support for oral anticoagulant management... - A modification of the Elixhauser comorbidity measures into a point system for hospital death using administrative dataCarl van Walraven
Ottawa Health Research Institute, Ottawa, Ontario, Canada
Med Care 47:626-33. 2009..However, the Elixhauser classification system requires 30 binary variables, making its use for reporting and analysis of comorbidity cumbersome... - Administrative database research infrequently used validated diagnostic or procedural codesCarl van Walraven
Ottawa Hospital Research Institute, Ottawa, Ontario, Canada
J Clin Epidemiol 64:1054-9. 2011..Measure the proportion of ADR studies using diagnostic or procedural codes that measured or referenced code accuracy... - Incidence of potentially avoidable urgent readmissions and their relation to all-cause urgent readmissionsCarl van Walraven
Faculty of Medicine, University of Ottawa, Ottawa, Ont
CMAJ 183:E1067-72. 2011..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... - Appropriateness of diagnostic strategies for evaluating suspected venous thromboembolismThomas Arnason
Ottawa Health Research Institute Clinical Epidemiology Program, Ottawa, ON, Canada
Thromb Haemost 97:195-201. 2007..In conclusion, physicians often fail to use diagnostic testing strategies for VTE correctly following a D-dimer test... - Frequency of adverse events in patients with poor anticoagulation: a meta-analysisNatalie Oake
Department of Medicine, University of Ottawa, Ottawa, Ont
CMAJ 176:1589-94. 2007..To gauge the potential effect of improved anticoagulation control, we undertook to determine the proportion of anticoagulant-associated events that occur when INRs are outside the therapeutic range... - Anticoagulation control in the peri-hospitalization periodCarl van Walraven
Clinical Epidemiology Program, Ottawa Health Research Institute C404, Ottawa Hospital, Civic Campus, 1053 Carling Avenue, Ottawa, ON, K1Y 4E9, Canada
J Gen Intern Med 22:727-35. 2007..Anticoagulated patients discharged after medical hospitalizations could be targeted for improved anticoagulation control... - The Kaiser Permanente inpatient risk adjustment methodology was valid in an external patient populationCarl van Walraven
Ottawa Health Research Institute, A581 003 Carling Ave, Ottawa, Ontario K1Y 4E9, Canada
J Clin Epidemiol 63:798-803. 2010..This study assessed the Kaiser Permanente inpatient risk adjustment methodology for hospital mortality in a patient population distinct from that used for its derivation... - Correlation between serial tests made disease probability estimates erroneousCarl van Walraven
Ottawa Health Research Institute, Ontario, Canada
J Clin Epidemiol 62:1301-5. 2009..The probability of a disease, given the result of two diagnostic tests, can be calculated by multiplying the odds of disease after the first test by the likelihood ratio of the second test... - Effect of beta-blocker prescription on the incidence of postoperative myocardial infarction after hip and knee arthroplastyWilton A van Klei
Department of Anesthesiology, The Ottawa Hospital, Civic Site, Ottawa, Ontario, Canada
Anesthesiology 111:717-24. 2009..The authors evaluated the effect of perioperative beta-blockade on postoperative myocardial infarction (POMI) in low-risk patients undergoing intermediate-risk surgery... - A meta-analysis of hospital 30-day avoidable readmission ratesCarl van Walraven
University of Ottawa, Ottawa, Ontario, Canada
J Eval Clin Pract 18:1211-8. 2012..In this study, we generated a literature-based estimate for the proportion of 30-day urgent readmissions deemed avoidable for hospitals to use to gauge their performance in avoidable readmissions... - Influence of house-staff experience on teaching-hospital mortality: the "July phenomenon" revisitedCarl van Walraven
Faculty of Medicine, University of Ottawa, Ontario, Canada
J Hosp Med 6:389-94. 2011..Previous quantitative studies of new house-staff and increased mortality have been limited primarily by a focused patient population and the use of limited data to adjust for severity of patient illness... - Prevalence of information gaps in the emergency department and the effect on patient outcomesAndrew Stiell
Clinical Epidemiology Unit, Ottawa Health Research Institute, ON
CMAJ 169:1023-8. 2003..INTERPRETATION: Information gaps were present in almost one-third of the visits to our emergency department. They were more common in sicker patients and were independently associated with a prolonged stay in the emergency department... - Association of diagnostic radiation exposure and second abdominal-pelvic malignancies after testicular cancerCarl van Walraven
University of Ottawa, Ottawa, Ontario, Canada
J Clin Oncol 29:2883-8. 2011..Men recovering from low-grade testicular cancer frequently undergo serial abdominal-pelvic computerized tomography (CT) scanning to monitor for recurrent disease... - Proportion of hospital readmissions deemed avoidable: a systematic reviewCarl van Walraven
Faculty of Medicine, University of Ottawa, Ottawa, Ont
CMAJ 183:E391-402. 2011..We conducted a systematic review of studies that measured the proportion of readmissions deemed avoidable. We examined how such readmissions were measured and estimated their prevalence... - Prevalence of information gaps for seniors transferred from nursing homes to the emergency departmentMatthew A Cwinn
Department of Emergency Medicine, University of Ottawa, Ottawa, Ontario
CJEM 11:462-71. 2009..For patients transferred to an emergency department (ED) from a nursing home or seniors residence, we determined the frequency and type of clinically important information gaps and the impact of a regional transfer form... - Addition of time-dependent covariates to a survival model significantly improved predictions for daily risk of hospital deathJenna Wong
Department of Clinical Epidemiology, Ottawa Hospital Research Institute, Ottawa, ON, Canada
J Eval Clin Pract 19:351-7. 2013..RATIONAL, AIMS AND OBJECTIVES: The study aims to determine the extent to which the addition of post-admission information via time-dependent covariates improved the ability of a survival model to predict the daily risk of hospital death... - Comparing methods to calculate hospital-specific rates of early death or urgent readmissionCarl van Walraven
Faculty of Medicine, University of Ottawa, Ottawa, Ontario, Canada
CMAJ 184:E810-7. 2012..Hospital-specific readmission rates have been reported as a quality-of-care indicator. However, the extent to which these measures vary with different calculation methods is uncertain... - Effect of study setting on anticoagulation control: a systematic review and metaregressionCarl van Walraven
Clinical Epidemiology Program, Ottawa Health Research Institute, C405, Ottawa Hospital, Civic Campus, 1053 Carling Ave, Ottawa, ON, K1Y 4E9 Canada
Chest 129:1155-66. 2006..The effect of study-level factors, especially study setting, on anticoagulation control is unknown... - Urgent readmission rates can be used to infer differences in avoidable readmission rates between hospitalsCarl van Walraven
Medicine, University of Ottawa, Ottawa Health Research Institute, Toronto, Canada
J Clin Epidemiol 65:1124-30. 2012..Most of the urgent readmissions are unavoidable. This study developed a method that used observed urgent readmission rates to compare the latent avoidable readmission rates between the two hospitals... - Hospital mortality: when failure is not a good measure of successKaveh G Shojania
Department of Medicine, University of Ottawa, ON, USA
CMAJ 179:153-7. 2008 - The association between continuity of care and outcomes: a systematic and critical reviewCarl van Walraven
Department of Medicine, University of Ottawa, Clinical Epidemiology Program, Ottawa Hospital Research Institute, Ottawa, ON, Canada
J Eval Clin Pract 16:947-56. 2010..Studies doing so must actually measure continuity. If continuity and outcomes are measured concurrently, their association can only be determined with time-dependent methods... - Derivation and validation of a MEDLINE search strategy for research studies that use administrative dataCarl van Walraven
Ottawa Hospital Research Institute, Institute for Clinical Evaluative Sciences, ASB 1 003 1053 Carling Avenue, Ottawa, ON
Health Serv Res 45:1836-45. 2010..To derive and validate a search strategy that identifies administrative database research (ADR) in the MEDLINE database... - Using Medical Emergency Teams to detect preventable adverse eventsAkshai Iyengar
Department of Medicine, Faculty of Medicine, University of Ottawa, 451 Smyth Road, Ottawa, ON, K1H 8M5, Canada
Crit Care 13:R126. 2009..We describe how we used MET calls to systematically identify preventable adverse events in an academic tertiary care hospital, and describe our surveillance results... - Can you prevent adverse drug events after hospital discharge?Alan J Forster
Division of General Internal Medicine, University of Ottawa, and Clinical Epidemiology Program, Ottawa Health Research Institute, Ottawa, Ont
CMAJ 174:921-2. 2006 - Experiential and rational decision making: a survey to determine how emergency physicians make clinical decisionsLisa A Calder
Department of Emergency Medicine, University of Ottawa, Ottawa, Ontario, Canada
Emerg Med J 29:811-6. 2012..Dual-process psychological theories argue that clinical decision making is achieved through a combination of experiential (fast and intuitive) and rational (slower and systematic) cognitive processes... - Time-dependent bias was common in survival analyses published in leading clinical journalsCarl van Walraven
Department of Medicine, University of Ottawa, Ottawa Hospital, Civic Campus, 1053 Carling Avenue, F 660, Ottawa, ON K1Y 4E9, Canada
J Clin Epidemiol 57:672-82. 2004..Time-dependent bias can occur if such variables are not analyzed appropriately. This study sought to determine the prevalence of such time-dependent bias in highly-cited medical journals... - The rationale and evidence for the treatment of lower-extremity deep venous thrombosis with thrombolytic agentsAlan J Forster
Department of Medicine and the Ottawa Health Research Institute, University of Ottawa, Ontario, Canada
Curr Opin Hematol 9:437-42. 2002..Therefore, the authors conclude that although the lysis rate is greater for thrombolytic agents, they cannot be recommended routinely for DVT treatment... - The uptake of technologies designed to influence medication safety in Canadian hospitalsMichael Saginur
Memorial University of Newfoundland, St John s, Canada
J Eval Clin Pract 14:27-35. 2008..There are many technologies designed to improve medication safety. Although limited evidence supports their use, there are pressures to implement them... - Electronically screening discharge summaries for adverse medical eventsHarvey J Murff
Division of General Internal Medicine, Brigham and Women's Hospital, Boston, MA 02115, USA
J Am Med Inform Assoc 10:339-50. 2003..Nonetheless, computerized clinical narrative screening methods could potentially offer researchers and quality managers a means to routinely detect adverse events... - Bias in revascularization studyCarl van Walraven
CMAJ 176:1125; author reply 1125. 2007 - Identifying wrist fracture patients with high accuracy by automatic categorization of X-ray reportsBerry de Bruijn
NRC IIT, 1200 Montreal Road, Building M 50, Ottawa ON, Canada
J Am Med Inform Assoc 13:696-8. 2006..8% accuracy; 95.5% sensitivity; 92.9% specificity; and 87.5% positive predictive value. TC-1 was easy to implement and superior in performance to the other classification methods... - An agenda for reducing emergency department crowdingAlan J Forster
Ann Emerg Med 45:479-81. 2005