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List of works by Carl van Walraven

A clinical prediction rule to identify patients with atrial fibrillation and a low risk for stroke while taking aspirin

scientific article (publication date: 28 April 2003)

A comparison of methods to correct for misclassification bias from administrative database diagnostic codes

scientific article

A meta‐analysis of hospital 30‐day avoidable readmission rates ⬇️

scientific article published on 09 November 2011

A modification of the Elixhauser comorbidity measures into a point system for hospital death using administrative data

scientific article

A prospective cohort study found that provider and information continuity was low after patient discharge from hospital.

scientific article published on September 2010

A retrospective assessment of prognostication in 456,685 patients undergoing elective major non-cardiac surgery

scientific article

A systematic review to evaluate the accuracy of electronic adverse drug event detection ⬇️

scientific article published on January 1, 2012

ACP Journal Club. Review: the effect of audit and feedback on guideline adherence and patient outcomes is limited

scientific article published on February 2013

Addition of time-dependent covariates to a survival model significantly improved predictions for daily risk of hospital death

scientific article published on 12 March 2012

Administrative data measured surgical site infection probability within 30 days of surgery in elderly patients

scientific article

Administrative database code accuracy did not vary notably with changes in disease prevalence

scientific article

Administrative database research has unique characteristics that can risk biased results

scientific article

Administrative database research infrequently used validated diagnostic or procedural codes

scientific article published on 06 April 2011

Adverse events among medical patients after discharge from hospital

scientific article published on February 2004

Adverse events detected by clinical surveillance on an obstetric service

scientific article published on 01 November 2006

Adverse events following an emergency department visit

scientific article published on February 2007

Anticoagulation control in the peri-hospitalization period

scientific article published on 31 March 2007

Anticoagulation intensity and outcomes among patients prescribed oral anticoagulant therapy: a systematic review and meta-analysis

scientific article published on July 2008

Association of Frailty and 1-Year Postoperative Mortality Following Major Elective Noncardiac Surgery: A Population-Based Cohort Study.

scientific article published on 20 January 2016

Association of Hospital-level Neuraxial Anesthesia Use for Hip Fracture Surgery with Outcomes: A Population-based Cohort Study

scientific article

Association of Polypharmacy with Survival, Complications, and Healthcare Resource Use after Elective Noncardiac Surgery: A Population-based Cohort Study

scientific article published on 14 February 2018

Association of diagnostic radiation exposure and second abdominal-pelvic malignancies after testicular cancer

scientific article published on 20 June 2011

Automated patient assessments after outpatient surgery using an interactive voice response system

scientific article published on 01 July 2008

Bias in revascularization study

scientific article published on April 2007

Bootstrap imputation minimized misclassification bias when measuring Colles' fracture prevalence and its associations using health administrative data

scientific article published on 26 December 2017

Bootstrap imputation with a disease probability model minimized bias from misclassification due to administrative database codes

scientific article

Burden of potentially avoidable anticoagulant-associated hemorrhagic and thromboembolic events in the elderly.

scientific article published on 22 February 2007

Can Text-Search Methods of Pathology Reports Accurately Identify Patients with Rectal Cancer in Large Administrative Databases?

scientific article

Changes in surrogate outcomes can be translated into clinical outcomes using a Monte Carlo model

scientific article published on 9 July 2009

Chronic rhinosinusitis identification in administrative databases and health surveys: A systematic review

scientific article

Clinical effects of blood donor characteristics in transfusion recipients: protocol of a framework to study the blood donor-recipient continuum

scientific article

Clinical inertia in response to inadequate glycemic control: do specialists differ from primary care physicians?

scientific article published in March 2005

Coding accuracy of abdominal aortic aneurysm repair procedures in administrative databases – a note of caution ⬇️

scientific article published on September 16, 2010

Combining ratings from multiple physician reviewers helped to overcome the uncertainty associated with adverse event classification

scientific article published on 8 April 2007

Comparing methods to calculate hospital-specific rates of early death or urgent readmission ⬇️

scientific article published on October 9, 2012

Competing risk bias in Kaplan-Meier risk estimates can be corrected

scientific article published on 28 August 2015

Competing risk bias was common in Kaplan-Meier risk estimates published in prominent medical journals.

scientific article published on 28 July 2015

Continuity of care and patient outcomes after hospital discharge

scientific article

Correlation between serial tests made disease probability estimates erroneous

scientific article published on 28 August 2009

Derivation and Validation of a Generalizable Preoperative Frailty Index Using Population-based Health Administrative Data

article

Derivation and Validation of a Model to Predict Daily Risk of Death in Hospital

scientific article published on 01 August 2011

Derivation and Validation of the Surgical Site Infections Risk Model Using Health Administrative Data

scientific article

Derivation and validation of a diagnostic score based on case-mix groups to predict 30-day death or urgent readmission

scientific article published on 19 July 2012

Derivation and validation of an index to predict early death or unplanned readmission after discharge from hospital to the community

scientific article

Derivation of a Predictive Model for Graft Loss Following Acute Kidney Injury in Kidney Transplant Recipients

scientific article published on 30 January 2017

Development and validation of an administrative data algorithm to identify adults who have endoscopic sinus surgery for chronic rhinosinusitis

scientific article

Diabetic patients with prior specialist care have better glycaemic control than those with prior primary care

scientific article published in December 2005

Did publication of a clinical practice guideline recommendation to screen for type 2 diabetes in women with gestational diabetes change practice?

scientific article

Dissemination of discharge summaries. Not reaching follow-up physicians.

scientific article

Does adding risk-trends to survival models improve in-hospital mortality predictions? A cohort study.

scientific article

Effect of Preoperative Geriatric Evaluation on Outcomes After Elective Surgery: A Population-Based Study

scientific article

Effect of Provider Continuity on Test Repetition

scientific article published on 19 October 2006

Effect of a nurse team coordinator on outcomes for hospitalized medicine patients

scientific article published on 01 October 2005

Effect of age on stroke prevention therapy in patients with atrial fibrillation: the atrial fibrillation investigators

scientific article published on 29 January 2009

Effect of an interactive voice response system on oral anticoagulant management

scientific article published on April 2009

Effect of discharge summary availability during post-discharge visits on hospital readmission

scientific article

Effect of follow-up physician visits on emergency readmissions

scientific article published on 01 September 2002

Effect of study setting on anticoagulation control: a systematic review and metaregression

scientific article

Effectiveness of a computerized drug-monitoring program to detect and prevent adverse drug events and medication non-adherence in outpatient ambulatory care: study protocol of a randomized controlled trial

scientific article

Enriched administrative data can be used to retrospectively identify all known cases of primary subarachnoid hemorrhage.

scientific article

Epidemiology and outcomes of bloodstream infections in patients discharged from the emergency department

scientific article published on January 2015

External validation of the Hospital-patient One-year Mortality Risk (HOMR) model for predicting death within 1 year after hospital admission

scientific article published on 8 June 2015

Frequency of adverse events in patients with poor anticoagulation: a meta-analysis

scientific article published on May 2007

How Far Is the Sternal Angle from the Mid-right Atrium?

scientific article published in November 2002

Identifying Obstructive Sleep Apnea in Administrative Data: A Study of Diagnostic Accuracy.

scientific article

Identifying individuals with a reduced GFR using ambulatory laboratory database surveillance

scientific article published on 30 March 2005

Identifying patients with post-discharge care problems using an interactive voice response system

scientific article published on 21 January 2009

Imaging for distant metastases in women with early-stage breast cancer: a population-based cohort study.

scientific article

Impact of ambulatory surgery day of the week on postoperative outcomes: a population-based cohort study.

scientific article

Impact of physician continuity on death or urgent readmission after discharge among patients with heart failure.

scientific article published on 19 August 2013

Impact of specialist follow-up in outpatients with congestive heart failure

scientific article

Improved Correction of Misclassification Bias With Bootstrap Imputation

scientific article published on 4 August 2017

Improving patient safety: moving beyond the "hype" of medical errors

scientific article published on October 2005

Incidence and Contributors to Potential Drug‐Drug Interactions in Hospitalized Patients ⬇️

scientific article published on 06 October 2010

Incidence of potentially avoidable urgent readmissions and their relation to all-cause urgent readmissions.

scientific article

Incidence, follow-up, and outcomes of incidental abdominal aortic aneurysms.

scientific article published on 11 June 2010

Independent influence of negative blood cultures and bloodstream infections on in-hospital mortality

scientific article published on 21 January 2014

Individual patient meta-analysis--rewards and challenges

scientific article published on March 2010

Influence of educational, audit and feedback, system based, and incentive and penalty interventions to reduce laboratory test utilization: a systematic review

scientific article published on February 2015

Influence of house‐staff experience on teaching‐hospital mortality: The “July Phenomenon” revisited ⬇️

scientific article published on 01 September 2011

Influence of neighborhood household income on early death or urgent hospital readmission

scientific article published on 10 April 2013

Information exchange among physicians caring for the same patient in the community

scientific article published on November 2008

Interactive voice response systems for improving delivery of ambulatory care.

scientific article published on June 2009

LACE+ index: extension of a validated index to predict early death or urgent readmission after hospital discharge using administrative data

scientific article

Leave 'em alone - why continuous variables should be analyzed as such

scientific article published on 17 April 2008

Long-term outcomes and resource utilization of endovascular versus open repair of abdominal aortic aneurysms in Ontario

scientific article

Maintaining continuity of care: a look at the quality of communication between Ontario emergency departments and community physicians.

scientific article published in May 2005

Maternal age and risk of stillbirth: a systematic review

scientific article

Migraine headache and risk of self-harm and suicide: A population-based study in Ontario, Canada

scientific article published on 31 October 2015

Migraineurs were reliably identified using administrative data

scientific article published on 21 September 2015

One- and five-year risk of death and cardiovascular complications for hospitalized patients with hyperglycemia without diagnosed diabetes: An observational study

article

Oral anticoagulants vs aspirin in nonvalvular atrial fibrillation: an individual patient meta-analysis

scientific article (publication date: 20 November 2002)

Oral anticoagulants vs. aspirin for stroke prevention in patients with non-valvular atrial fibrillation: the verdict is in

scientific article (publication date: December 2003)

Ottawa Hospital Patient Safety Study: incidence and timing of adverse events in patients admitted to a Canadian teaching hospital

scientific article published on April 2004

Outcomes of surveillance mammography after treatment of primary breast cancer: a population-based case series

scientific article published on 27 March 2008

PREHAB study: a protocol for a prospective randomised clinical trial of exercise therapy for people living with frailty having cancer surgery.

scientific article

Patient-level factors associated with methicillin-resistant Staphylococcus aureus carriage at hospital admission: A systematic review ⬇️

scientific article published on September 21, 2012

Pediatric tonsillectomy is a resource-intensive procedure: a study of Canadian health administrative data

scientific article

Peripheral Nerve Blockade for Primary Total Knee Arthroplasty: A Population-based Cohort Study of Outcomes and Resource Utilization

scientific article published on 12 December 2016

Population-based study of repeat laboratory testing

scientific article published in December 2003

Practice guidelines and practicing physicians-who's guiding whom?

scientific article published on 01 January 2002

Predicting Stroke Risk Based on Health Behaviours: Development of the Stroke Population Risk Tool (SPoRT)

scientific article published on 4 December 2015

Predicting post‐discharge death or readmission: deterioration of model performance in population having multiple admissions per patient ⬇️

scientific article published on November 19, 2012

Predicting potential survival benefit of renal transplantation in patients with chronic kidney disease

scientific article

Predicting the risk of unplanned readmission or death within 30 days of discharge after a heart failure hospitalization.

scientific article published on 17 August 2012

Prevalence of information gaps in the emergency department and the effect on patient outcomes ⬇️

scientific article published on November 11, 2003

Prognosticating with the Hospitalized Patient 1-year Mortality Risk Score Using Information Abstracted from the Medical Record

scientific article published on April 2017

Proportion of hospital readmissions deemed avoidable: a systematic review

scientific article published on 28 March 2011

Quality gaps identified through mortality review

scientific article published on 08 February 2016

Quantifying the impact of survivor treatment bias in observational studies

scientific article published in December 2006

Radiographic monitoring of incidental abdominal aortic aneurysms: a retrospective population-based cohort study ⬇️

scientific article published on April 12, 2011

Reliability of the peer-review process for adverse event rating

scientific article published on 26 July 2012

Renin-angiotensin system blockade and the risk of hyperkalemia in chronic hemodialysis patients.

scientific article

Reply to C.B. Simone II

Reply to D.J. Brenner et al

Response to Letter to the Editor on administrative database research infrequently uses validated diagnostic or procedural codes ⬇️

scientific article published on January 29, 2012

Restricted driver licensing for medical impairments: does it work?

scientific article

Reviewing the medical literature: five notable articles in general internal medicine from 2010 and 2011 ⬇️

scientific article published on February 14, 2012

Risk of death or readmission among people discharged from hospital on Fridays

scientific article

Risk of subsequent thromboembolism for patients with pre-eclampsia

scientific article

Selecting patients with atrial fibrillation for anticoagulation: stroke risk stratification in patients taking aspirin

scientific article (publication date: 19 October 2004)

Survival of men with prostate cancer undergoing radical prostatectomy in Ontario

scientific article published on 21 April 2014

The Association of Frailty With Outcomes and Resource Use After Emergency General Surgery: A Population-Based Cohort Study

scientific article published on May 2017

The HOMR-Now! Model Accurately Predicts 1-Year Death Risk for Hospitalized Patients on Admission

scientific article

The Hospital-patient One-year Mortality Risk score accurately predicted long-term death risk in hospitalized patients

scientific article published on 25 June 2014

The Impact of Improved Population Life Expectancy in Survival Trend Analyses of Specific Diseases

scientific article published on 20 October 2015

The Influence of Hospitalist Continuity on the Likelihood of Patient Discharge in General Medicine Patients

scientific article published on 26 March 2018

The Kaiser Permanente inpatient risk adjustment methodology was valid in an external patient population

scientific article published on 11 December 2009

The Procedural Index for Mortality Risk (PIMR): an index calculated using administrative data to quantify the independent influence of procedures on risk of hospital death

scientific article

The Surgical Site Infection Risk Score (SSIRS): A Model to Predict the Risk of Surgical Site Infections

scientific article

The TEND (Tomorrow's Expected Number of Discharges) Model Accurately Predicted the Number of Patients Who Were Discharged from the Hospital the Next Day.

scientific article published on 23 August 2017

The Utility of Unplanned Early Hospital Readmissions as a Health Care Quality Indicator

scientific article published on 14 September 2015

The accuracy of using integrated electronic health care data to identify patients with undiagnosed diabetes mellitus ⬇️

scientific article published on February 17, 2011

The association between continuity of care and outcomes: a systematic and critical review

scientific article published on October 2010

The effect of a hepatitis serology testing algorithm on laboratory utilization

scientific article published in August 2002

The effect of hospital occupancy on emergency department length of stay and patient disposition

scientific article published on 01 February 2003

The effect of hospital-acquired Clostridium difficile infection on in-hospital mortality

scientific article published in November 2010

The effect of hospital-acquired infection with Clostridium difficile on length of stay in hospital

scientific article published on 5 December 2011

The effect of hospitalization on oral anticoagulation control: A population-based study

scientific article published on 17 July 2006

The effect of participation in a weight loss programme on short-term health resource utilization

scientific article published in February 2002

The impact of adverse events in the intensive care unit on hospital mortality and length of stay

scientific article

The independent association of provider and information continuity on outcomes after hospital discharge: Implications for hospitalists

scientific article published on 01 September 2010

The influence of cholinesterase inhibitor therapy for dementia on risk of cardiac pacemaker insertion: a retrospective, population-based, health administrative databases study in Ontario, Canada

scientific article published on 28 April 2015

The influence of incidental abdominal aortic aneurysm monitoring on patient outcomes.

scientific article published on 31 July 2011

The mortality risk score and the ADG score: two points-based scoring systems for the Johns Hopkins aggregated diagnosis groups to predict mortality in a general adult population cohort in Ontario, Canada

scientific article

The prevalence of potentially preventable deaths in an acute care hospital: A retrospective cohort

scientific article published on February 2017

The use of quality indicators to promote accountability in health care: the good, the bad, and the ugly

scientific article published on 19 June 2012

The usefulness of administrative databases for identifying disease cohorts is increased with a multivariate model

scientific article published on 8 May 2010

Time-dependent bias was common in survival analyses published in leading clinical journals.

scientific article

Trends in 1-year survival of people admitted to hospital in Ontario, 1994-2009.

scientific article published on 30 September 2013

Trends in prostate biopsy in Ontario, 1992-2014: a cohort study

scientific article published on October 2016

Unplanned readmissions after hospital discharge among patients identified as being at high risk for readmission using a validated predictive algorithm ⬇️

scientific article published on May 31, 2011

Urgent readmission rates can be used to infer differences in avoidable readmission rates between hospitals

scientific article published on 17 July 2012

Using an interactive voice response system to improve patient safety following hospital discharge

scientific article published on 01 June 2007

Using prospective clinical surveillance to identify adverse events in hospital ⬇️

scientific article published on March 1, 2011

Using the Johns Hopkins Aggregated Diagnosis Groups (ADGs) to predict mortality in a general adult population cohort in Ontario, Canada

scientific article

Utilization and outcomes of HbA1c testing: a population-based study

scientific article published in January 2006

Validation of a discharge summary term search method to detect adverse events

scientific article

Validation of administrative database codes for acute kidney injury in kidney transplant recipients

scientific article published on 7 April 2016

Wait Times for Melanoma Surgery: Is There an Association with Overall Survival?

scientific article

When laboratories report estimated glomerular filtration rates in addition to serum creatinines, nephrology consults increase

scientific article published on 13 May 2009

When projecting required effectiveness of interventions for hospital readmission reduction, the percentage that is potentially avoidable must be considered

scientific article published on 12 December 2012

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