Published in Can Respir J on December 16, 2009
Implementation of electronic medical records: effect on the provision of preventive services in a pay-for-performance environment. Can Fam Physician (2011) 1.33
Validation of case-finding algorithms derived from administrative data for identifying adults living with human immunodeficiency virus infection. PLoS One (2011) 1.32
The increasing burden and complexity of multimorbidity. BMC Public Health (2015) 1.31
Risk of incident diabetes in relation to long-term exposure to fine particulate matter in Ontario, Canada. Environ Health Perspect (2013) 1.26
Methods for identifying 30 chronic conditions: application to administrative data. BMC Med Inform Decis Mak (2015) 1.22
A cross-sectional, population-based study measuring comorbidity among people living with HIV in Ontario. BMC Public Health (2014) 1.15
Measuring data reliability for preventive services in electronic medical records. BMC Health Serv Res (2012) 1.11
The air quality health index and asthma morbidity: a population-based study. Environ Health Perspect (2012) 1.06
Describing and quantifying asthma comorbidity [corrected]: a population study. PLoS One (2012) 1.02
Did changing primary care delivery models change performance? A population based study using health administrative data. BMC Fam Pract (2011) 0.98
Multispecialty physician networks in Ontario. Open Med (2013) 0.95
Preoperative testing before low-risk surgical procedures. CMAJ (2015) 0.90
Asthma and chronic obstructive pulmonary disease (COPD) prevalence and health services use in Ontario Métis: a population-based cohort study. PLoS One (2014) 0.87
Describing the linkages of the immigration, refugees and citizenship Canada permanent resident data and vital statistics death registry to Ontario's administrative health database. BMC Med Inform Decis Mak (2016) 0.86
Mental health status and gender as risk factors for onset of physical illness over 10 years. J Epidemiol Community Health (2013) 0.86
Physical health and gender as risk factors for usage of services for mental illness. J Epidemiol Community Health (2014) 0.86
Asthma, type 1 and type 2 diabetes mellitus, and inflammatory bowel disease amongst South Asian immigrants to Canada and their children: a population-based cohort study. PLoS One (2015) 0.84
Identifying patients with asthma in primary care electronic medical record systems Chart analysis-based electronic algorithm validation study. Can Fam Physician (2015) 0.83
Trends in HIV prevalence, new HIV diagnoses, and mortality among adults with HIV who entered care in Ontario, 1996/1997 to 2009/2010: a population-based study. Open Med (2013) 0.83
Herpes zoster as a marker of underlying malignancy. Open Med (2013) 0.82
Substance-related and addictive disorders among adults with intellectual and developmental disabilities (IDD): an Ontario population cohort study. BMJ Open (2016) 0.81
Are family physicians comprehensively using electronic medical records such that the data can be used for secondary purposes? A Canadian perspective. BMC Med Inform Decis Mak (2015) 0.81
Electronic health record-based assessment of oral corticosteroid use in a population of primary care patients with asthma: an observational study. Allergy Asthma Clin Immunol (2013) 0.80
The association of asthma education centre characteristics on hospitalizations and emergency department visits in Ontario: a population-based study. BMC Health Serv Res (2014) 0.79
Receipt of glucocorticoid monotherapy among Medicare beneficiaries with rheumatoid arthritis. Arthritis Care Res (Hoboken) (2014) 0.79
Childhood Exposure to Ambient Air Pollutants and the Onset of Asthma: An Administrative Cohort Study in Québec. Environ Health Perspect (2016) 0.78
Is asthma a vanishing disease? A study to forecast the burden of asthma in 2022. BMC Public Health (2013) 0.77
Glucocorticoid-induced osteoporosis management among seniors, by year, sex, and indication, 1996-2012. Osteoporos Int (2015) 0.76
The Accuracy of an Electronic Pulmonary Embolism Severity Index Auto-Populated from the Electronic Health Record: Setting the stage for computerized clinical decision support. Appl Clin Inform (2015) 0.76
Using physician billing claims from the Ontario Health Insurance Plan to determine individual influenza vaccination status: an updated validation study. CMAJ Open (2016) 0.75
Cost evaluation of out-of-country care for patients with eating disorders in Ontario: a population-based study. CMAJ Open (2016) 0.75
Sparse modeling of spatial environmental variables associated with asthma. J Biomed Inform (2014) 0.75
Development of a validated algorithm for the diagnosis of paediatric asthma in electronic medical records. NPJ Prim Care Respir Med (2016) 0.75
Those Left Behind From Voluntary Medical Home Reforms in Ontario, Canada. Ann Fam Med (2016) 0.75
Safety of valproic acid in patients with chronic obstructive pulmonary disease: a population-based cohort study. Pharmacoepidemiol Drug Saf (2015) 0.75
The burden of asthma among the South Asian and Chinese population residing in Ontario. Can Respir J (2014) 0.75
Database epidemiology. Can Respir J (2009) 0.75
Quality of asthma care under different primary care models in Canada: a population-based study. BMC Fam Pract (2015) 0.75
Pragmatic research and outcomes in asthma and COPD. Pragmat Obs Res (2012) 0.75
Emergency department use by people with HIV in Ontario: a population-based cohort study. CMAJ Open (2016) 0.75
Concurrent physician-diagnosed asthma and chronic obstructive pulmonary disease: A population study of prevalence, incidence and mortality. PLoS One (2017) 0.75
The direct healthcare costs associated with psychological distress and major depression: A population-based cohort study in Ontario, Canada. PLoS One (2017) 0.75
Effect of socio-demographic factors on the association between multimorbidity and healthcare costs: a population-based, retrospective cohort study. BMJ Open (2017) 0.75
Accuracy of administrative claims data for cerebral palsy diagnosis: a retrospective cohort study. CMAJ Open (2017) 0.75
The global burden of asthma. Chest (2006) 5.74
Adult Asthma Consensus Guidelines update 2003. Can Respir J (2004) 3.61
Sample size calculation should be performed for design accuracy in diagnostic test studies. J Clin Epidemiol (2005) 2.87
Case verification of children with asthma in Ontario. Pediatr Allergy Immunol (2006) 1.94
Defining asthma in epidemiological studies. Eur Respir J (1999) 1.88
Diagnosing asthma: the fit between survey and administrative database. Can Respir J (2003) 1.45
The validity of diagnosing chronic obstructive pulmonary disease from a large administrative database. Can Respir J (2005) 1.37
Validity of asthma diagnoses recorded in the Medical Services database of Quebec. Pharmacoepidemiol Drug Saf (2006) 1.29
Childhood asthma surveillance using administrative data: consistency between medical billing and hospital discharge diagnoses. Can Respir J (2008) 0.98
The characteristics of different diagnostic tests in adult mild asthmatic patients: comparison with patients with asthma-like symptoms by gastro-oesophageal reflux. Respir Med (2007) 0.97
The burden of asthma: can it be eased? The Ontario record. Healthc Q (2007) 0.95
The Canadian National Breast Screening Study-1: breast cancer mortality after 11 to 16 years of follow-up. A randomized screening trial of mammography in women age 40 to 49 years. Ann Intern Med (2002) 5.17
The development of a comorbidity index with physical function as the outcome. J Clin Epidemiol (2005) 4.24
Cardiovascular safety of inhaled long-acting bronchodilators in individuals with chronic obstructive pulmonary disease. JAMA Intern Med (2013) 3.05
Lifetime risk of developing chronic obstructive pulmonary disease: a longitudinal population study. Lancet (2011) 2.65
Development and use of reporting guidelines for assessing the quality of validation studies of health administrative data. J Clin Epidemiol (2010) 2.54
Trends in chronic obstructive pulmonary disease prevalence, incidence, and mortality in ontario, Canada, 1996 to 2007: a population-based study. Arch Intern Med (2010) 2.43
Assessing the volume-outcome hypothesis and region-level quality improvement interventions: pancreas cancer surgery in two Canadian Provinces. Ann Surg Oncol (2010) 2.16
The appropriateness of the pulmonary artery catheter in cardiovascular surgery. Can J Anaesth (2002) 2.11
DNA damage checkpoint control in cells exposed to ionizing radiation. Oncogene (2003) 2.10
A randomized controlled trial of a public health nurse-delivered asthma program to elementary schools. J Sch Health (2013) 2.08
Case verification of children with asthma in Ontario. Pediatr Allergy Immunol (2006) 1.94
A prospective population-based study of the predictors of undergoing total joint arthroplasty. Arthritis Rheum (2006) 1.82
Congenital abnormalities and childhood cancer. Cancer (2005) 1.78
Patient-derived first generation xenografts of non-small cell lung cancers: promising tools for predicting drug responses for personalized chemotherapy. Clin Cancer Res (2010) 1.77
Pulmonary function testing in the diagnosis of asthma: a population study. Chest (2011) 1.72
Trends in rates of death from unintentional injury among Canadian children in urban areas: influence of socioeconomic status. CMAJ (2006) 1.66
Neighborhood income and health outcomes in infants: how do those with complex chronic conditions fare? Arch Pediatr Adolesc Med (2009) 1.65
Antibiotic prescribing for upper respiratory tract infection: the importance of diagnostic uncertainty. J Pediatr (2005) 1.58
Comparison of inhaled long-acting β-agonist and anticholinergic effectiveness in older patients with chronic obstructive pulmonary disease: a cohort study. Ann Intern Med (2011) 1.55
Neonatal short bowel syndrome: population-based estimates of incidence and mortality rates. J Pediatr Surg (2004) 1.52
Transition to adult care for youths with diabetes mellitus: findings from a Universal Health Care System. Pediatrics (2009) 1.51
Trends in asthma prevalence and incidence in Ontario, Canada, 1996-2005: a population study. Am J Epidemiol (2010) 1.49
Trends in socioeconomic status-related differences in mortality among people with chronic obstructive pulmonary disease. Ann Am Thorac Soc (2014) 1.47
Preserved heart rate variability during therapeutic hypothermia correlated to 96 hrs neurological outcomes and survival in a pig model of cardiac arrest. Crit Care Med (2012) 1.47
Retracted Antenatal steroid therapy for fetal lung maturation and the subsequent risk of childhood asthma: a longitudinal analysis. J Pregnancy (2010) 1.46
Pulmonary artery occlusion pressure estimation: how confident are anesthesiologists? Crit Care Med (2002) 1.46
Administrative data accurately identified intensive care unit admissions in Ontario. J Clin Epidemiol (2006) 1.43
Follow-up care after an emergency department visit for asthma and subsequent healthcare utilization in a universal-access healthcare system. J Pediatr (2012) 1.40
The Ontario Asthma Regional Variation Study: emergency department visit rates and the relation to hospitalization rates. Chest (2006) 1.38
Validation of a health administrative data algorithm for assessing the epidemiology of diabetes in Canadian children. Pediatr Diabetes (2009) 1.37
Risk of incarceration of inguinal hernia among infants and young children awaiting elective surgery. CMAJ (2008) 1.37
A population-based nested case-control study of the costs of hip and knee replacement surgery. Med Care (2009) 1.35
Implementing practice guidelines: a workshop on guidelines dissemination and implementation with a focus on asthma and COPD. Can Respir J (2006) 1.32
Quantifying health services use for chronic obstructive pulmonary disease. Am J Respir Crit Care Med (2013) 1.29
Is diabetic ketoacidosis at disease onset a result of missed diagnosis? J Pediatr (2009) 1.29
Systematic evaluation of errors occurring during the preparation of intravenous medication. CMAJ (2008) 1.26
Establishment in severe combined immunodeficiency mice of subrenal capsule xenografts and transplantable tumor lines from a variety of primary human lung cancers: potential models for studying tumor progression-related changes. Clin Cancer Res (2006) 1.19
Burden of comorbidity in individuals with asthma. Thorax (2010) 1.19
What is the lifetime risk of physician-diagnosed asthma in Ontario, Canada? Am J Respir Crit Care Med (2009) 1.16
Volume matters: physician practice characteristics and immunization coverage among young children insured through a universal health plan. Pediatrics (2006) 1.16
Effect of subspecialty training and volume on outcome after pediatric inguinal hernia repair. J Pediatr Surg (2005) 1.15
Tumor growth inhibition by olaparib in BRCA2 germline-mutated patient-derived ovarian cancer tissue xenografts. Clin Cancer Res (2010) 1.14
Effects of use of specialty services on disease-modifying antirheumatic drug use in the treatment of rheumatoid arthritis in an insured elderly population. Med Care (2004) 1.12
Can a community evidence-based asthma care program improve clinical outcomes?: a longitudinal study. Med Care (2008) 1.12
Recent trends in hospitalization for diabetic ketoacidosis in ontario children. Diabetes Care (2002) 1.11
Knee arthroscopy in England and Ontario: patterns of use, changes over time, and relationship to total knee replacement. J Bone Joint Surg Am (2008) 1.09
Mammography benefit in the Canadian National Breast Screening Study-2: a model evaluation. Int J Cancer (2004) 1.08
Effect on antibiotic prescribing of repeated clinical prompts to use a sore throat score: lessons from a failed community intervention study. J Fam Pract (2002) 1.08
The air quality health index and asthma morbidity: a population-based study. Environ Health Perspect (2012) 1.06
Insulin sensitivity and beta-cell function in protease inhibitor-treated and -naive human immunodeficiency virus-infected children. J Clin Endocrinol Metab (2004) 1.06
Gender and outpatient mental health service use. Soc Sci Med (2002) 1.04
Describing and quantifying asthma comorbidity [corrected]: a population study. PLoS One (2012) 1.02
Relationship of asthma management, socioeconomic status, and medication insurance characteristics to exacerbation frequency in children with asthma. Ann Allergy Asthma Immunol (2010) 1.02
Effectiveness of emergency department asthma management strategies on return visits in children: a population-based study. Pediatrics (2007) 1.02
Outcomes of pediatric inflammatory bowel disease: socioeconomic status disparity in a universal-access healthcare system. J Pediatr (2011) 1.01
Persistence and remission in childhood asthma: a population-based asthma birth cohort study. Arch Pediatr Adolesc Med (2007) 1.01
Involvement of Hus1 in the chain elongation step of DNA replication after exposure to camptothecin or ionizing radiation. Nucleic Acids Res (2004) 1.00
Protection against radiation-induced oxidative stress in cultured human epithelial cells by treatment with antioxidant agents. Int J Radiat Oncol Biol Phys (2006) 0.99
An ATM-independent S-phase checkpoint response involves CHK1 pathway. Cancer Res (2002) 0.98
Selenomethionine protects against adverse biological effects induced by space radiation. Free Radic Biol Med (2004) 0.97
Variations and gaps in management of acute asthma in Ontario emergency departments. Chest (2008) 0.97
Evidence-based performance indicators of primary care for asthma: a modified RAND Appropriateness Method. Int J Qual Health Care (2010) 0.96
Implication of CLU gene polymorphisms in Chinese patients with Alzheimer's disease. Clin Chim Acta (2010) 0.96
Effect of subspecialty training on outcome after pediatric appendectomy. J Pediatr Surg (2007) 0.96
Multispecialty physician networks in Ontario. Open Med (2013) 0.95
The burden of asthma: can it be eased? The Ontario record. Healthc Q (2007) 0.95
Rapid head cooling initiated coincident with cardiopulmonary resuscitation improves success of defibrillation and post-resuscitation myocardial function in a porcine model of prolonged cardiac arrest. J Am Coll Cardiol (2008) 0.94
Changes to surgical and hospitalization rates of pediatric inflammatory bowel disease in Ontario, Canada (1994-2007). Inflamm Bowel Dis (2010) 0.93
Saccadic adaptation in Chiari type II malformation. Can J Neurol Sci (2006) 0.93
Examining intra-rater and inter-rater response agreement: a medical chart abstraction study of a community-based asthma care program. BMC Med Res Methodol (2008) 0.91
Does pediatric surgical specialty training affect outcome after Ramstedt pyloromyotomy? A population-based study. Pediatrics (2004) 0.91
Walking and child pedestrian injury: a systematic review of built environment correlates of safe walking. Inj Prev (2013) 0.91
Occurrence and impact of unanticipated variation in intravenous methotrexate dosing. Ann Pharmacother (2006) 0.90
Verifying a questionnaire diagnosis of asthma in children using health claims data. BMC Pulm Med (2011) 0.90
Sleep laboratory test referrals in Canada: sleep apnea rapid response survey. Can Respir J (2013) 0.90
The course of asthma activity: a population study. J Allergy Clin Immunol (2011) 0.89
Caffeine inhibits homology-directed repair of I-SceI-induced DNA double-strand breaks. Oncogene (2004) 0.89
Postasphyxial hypoxic-ischemic encephalopathy in neonates: outcome prediction rule within 4 hours of birth. Arch Pediatr Adolesc Med (2006) 0.88
Illustrating risk: anaphylaxis through the eyes of the food-allergic child. Risk Anal (2010) 0.88
Asthma and allergic disease prevalence in a diverse sample of Toronto school children: results from the Toronto Child Health Evaluation Questionnaire (T-CHEQ) Study. Can Respir J (2010) 0.88
Improving asthma care in rural primary care practices: a performance improvement project. J Contin Educ Health Prof (2014) 0.88
Intra-arrest rapid head cooling improves postresuscitation myocardial function in comparison with delayed postresuscitation surface cooling. Crit Care Med (2008) 0.88