Published in JAMA on January 17, 2007
Survival following primary androgen deprivation therapy among men with localized prostate cancer. JAMA (2008) 5.66
Long-term survival following partial vs radical nephrectomy among older patients with early-stage kidney cancer. JAMA (2012) 4.30
Using natural experiments to evaluate population health interventions: new Medical Research Council guidance. J Epidemiol Community Health (2012) 4.26
Estimating treatment effects using observational data. JAMA (2007) 4.12
Association between stroke center hospitalization for acute ischemic stroke and mortality. JAMA (2011) 3.68
Association between cholecystectomy with vs without intraoperative cholangiography and risk of common duct injury. JAMA (2013) 3.52
Patterns of use and short-term complications of breast brachytherapy in the national medicare population from 2008-2009. J Clin Oncol (2012) 3.34
Comparative effectiveness of prostate cancer treatments: evaluating statistical adjustments for confounding in observational data. J Natl Cancer Inst (2010) 3.24
Confounding control in healthcare database research: challenges and potential approaches. Med Care (2010) 3.01
The REporting of studies Conducted using Observational Routinely-collected health Data (RECORD) Statement. PLoS Med (2015) 2.72
Association of hospital spending intensity with mortality and readmission rates in Ontario hospitals. JAMA (2012) 2.47
Pericardial fat burden on ECG-gated noncontrast CT in asymptomatic patients who subsequently experience adverse cardiovascular events. JACC Cardiovasc Imaging (2010) 2.37
A most stubborn bias: no adjustment method fully resolves confounding by indication in observational studies. J Clin Epidemiol (2009) 2.33
Prognosis research strategy (PROGRESS) 1: a framework for researching clinical outcomes. BMJ (2013) 2.31
Preference-based instrumental variable methods for the estimation of treatment effects: assessing validity and interpreting results. Int J Biostat (2007) 2.24
Use of radical cystectomy for patients with invasive bladder cancer. J Natl Cancer Inst (2010) 2.17
Analysis of the impact of early surgery on in-hospital mortality of native valve endocarditis: use of propensity score and instrumental variable methods to adjust for treatment-selection bias. Circulation (2010) 2.01
Instrumental variable methods in comparative safety and effectiveness research. Pharmacoepidemiol Drug Saf (2010) 1.96
A targeted maximum likelihood estimator of a causal effect on a bounded continuous outcome. Int J Biostat (2010) 1.89
Longer dialysis session length is associated with better intermediate outcomes and survival among patients on in-center three times per week hemodialysis: results from the Dialysis Outcomes and Practice Patterns Study (DOPPS). Nephrol Dial Transplant (2012) 1.88
Effects of adjusting for instrumental variables on bias and precision of effect estimates. Am J Epidemiol (2011) 1.77
Readmission destination and risk of mortality after major surgery: an observational cohort study. Lancet (2015) 1.74
Instrumental variables I: instrumental variables exploit natural variation in nonexperimental data to estimate causal relationships. J Clin Epidemiol (2009) 1.73
Adult consequences of growth failure in early childhood. Am J Clin Nutr (2013) 1.69
The effect on survival of continuing chemotherapy to near death. BMC Palliat Care (2011) 1.66
Do observational studies using propensity score methods agree with randomized trials? A systematic comparison of studies on acute coronary syndromes. Eur Heart J (2012) 1.64
The relationship between hospital volume and mortality in mechanical ventilation: an instrumental variable analysis. Health Serv Res (2009) 1.63
Instrumental variables II: instrumental variable application-in 25 variations, the physician prescribing preference generally was strong and reduced covariate imbalance. J Clin Epidemiol (2009) 1.56
Does primary androgen-deprivation therapy delay the receipt of secondary cancer therapy for localized prostate cancer? Eur Urol (2012) 1.55
Relationship between surgical oncologic outcomes and publically reported hospital quality and satisfaction measures. J Natl Cancer Inst (2015) 1.50
Effectiveness of long-term acute care hospitalization in elderly patients with chronic critical illness. Med Care (2013) 1.46
Hospital-level outcomes associated with laparoscopic colectomy for cancer in the minimally invasive era. J Gastrointest Surg (2012) 1.43
Treatment with neuromuscular blocking agents and the risk of in-hospital mortality among mechanically ventilated patients with severe sepsis. Crit Care Med (2014) 1.42
The differential impact of delivery hospital on the outcomes of premature infants. Pediatrics (2012) 1.42
Utilization and perioperative outcomes of robotic vaginal vault suspension compared to abdominal or vaginal approaches for pelvic organ prolapse. Can Urol Assoc J (2014) 1.41
Outcomes of deliveries by family physicians or obstetricians: a population-based cohort study using an instrumental variable. CMAJ (2015) 1.40
Survival advantage in Medicare patients receiving drug-eluting stents compared with bare metal stents: real or artefactual? Catheter Cardiovasc Interv (2008) 1.39
Increased pericardial fat volume measured from noncontrast CT predicts myocardial ischemia by SPECT. JACC Cardiovasc Imaging (2010) 1.34
Modifiable practices associated with sudden death among hemodialysis patients in the Dialysis Outcomes and Practice Patterns Study. Clin J Am Soc Nephrol (2012) 1.24
The effectiveness of inpatient rehabilitation in the acute postoperative phase of care after transtibial or transfemoral amputation: study of an integrated health care delivery system. Arch Phys Med Rehabil (2008) 1.24
Hospice care and survival among elderly patients with lung cancer. J Palliat Med (2011) 1.22
A systematic review of surgery for non-curative gastric cancer. Gastric Cancer (2011) 1.20
Blood pressure levels and mortality risk among hemodialysis patients in the Dialysis Outcomes and Practice Patterns Study. Kidney Int (2012) 1.15
Identifying the odds ratio estimated by a two-stage instrumental variable analysis with a logistic regression model. Stat Med (2013) 1.14
Choosing models for health care cost analyses: issues of nonlinearity and endogeneity. Health Serv Res (2012) 1.13
Separated at birth: statisticians, social scientists, and causality in health services research. Health Serv Res (2010) 1.13
Associations of frequency and duration of patient-doctor contact in hemodialysis facilities with mortality. J Am Soc Nephrol (2013) 1.13
Influenza morbidity and mortality in elderly patients receiving statins: a cohort study. PLoS One (2009) 1.11
Trends in the timing of pre-emptive kidney transplantation. J Am Soc Nephrol (2011) 1.10
Effect of highly active antiretroviral therapy on incident AIDS using calendar period as an instrumental variable. Am J Epidemiol (2009) 1.09
Continuation of prescribed compared with over-the-counter oral contraceptives. Obstet Gynecol (2011) 1.09
Comparative effectiveness of upfront treatment strategies in elderly women with ovarian cancer. Cancer (2014) 1.08
Provider treatment intensity and outcomes for patients with early-stage bladder cancer. J Natl Cancer Inst (2009) 1.06
Does clinical management improve outcomes following self-harm? Results from the multicentre study of self-harm in England. PLoS One (2013) 1.03
Chronic kidney disease itself is a causal risk factor for stroke beyond traditional cardiovascular risk factors: a nationwide cohort study in Taiwan. PLoS One (2012) 1.03
Is delayed graft function causally associated with long-term outcomes after kidney transplantation? Instrumental variable analysis. Transplantation (2013) 1.00
Some old and some new statistical tools for outcomes research. Circulation (2008) 0.98
Reducing bias in the assessment of treatment effectiveness: androgen deprivation therapy for prostate cancer. Med Care (2012) 0.98
Nurse staffing and postsurgical outcomes in black adults. J Am Geriatr Soc (2012) 0.96
Links between analysis of surrogate endpoints and endogeneity. Stat Med (2010) 0.94
Study protocol: the Back Pain Outcomes using Longitudinal Data (BOLD) registry. BMC Musculoskelet Disord (2012) 0.94
Using instrumental variables to estimate a Cox's proportional hazards regression subject to additive confounding. Health Serv Outcomes Res Methodol (2014) 0.93
When and how to use instrumental variables in palliative care research. J Palliat Med (2009) 0.92
Survival implications associated with variation in mastectomy rates for early-staged breast cancer. Int J Surg Oncol (2012) 0.89
Safety and effectiveness of bivalirudin in routine care of patients undergoing percutaneous coronary intervention. Eur Heart J (2009) 0.89
Self-reported halitosis and gastro-esophageal reflux disease in the general population. J Gen Intern Med (2008) 0.88
Distinguishing Selection Bias and Confounding Bias in Comparative Effectiveness Research. Med Care (2016) 0.88
Estimating Decision-Relevant Comparative Effects Using Instrumental Variables. Stat Biosci (2011) 0.88
Racial differences in treatment and outcomes among patients with early stage bladder cancer. Cancer (2010) 0.87
The effect of trauma center care on pediatric injury mortality in California, 1999 to 2011. J Trauma Acute Care Surg (2013) 0.86
Older adults who persistently present to the emergency department with severe, non-severe, and indeterminate episode patterns. BMC Geriatr (2011) 0.86
Efficacy of phototherapy for newborns with hyperbilirubinemia: a cautionary example of an instrumental variable analysis. Med Decis Making (2011) 0.86
Analytic approaches to observational studies with treatment selection bias. JAMA (2007) 0.86
Impact of tuberculosis on mortality among HIV-infected patients receiving antiretroviral therapy in Uganda: a prospective cohort analysis. AIDS Res Ther (2013) 0.85
Use of Self-Matching to Control for Stable Patient Characteristics While Addressing Time-Varying Confounding on Treatment Effect: A Case Study of Older Intensive Care Patients. Int J Stat Med Res (2016) 0.85
Association of guideline-based antimicrobial therapy and outcomes in healthcare-associated pneumonia. J Antimicrob Chemother (2015) 0.85
Psychosocial Assessment of Self-Harm Patients and Risk of Repeat Presentation: An Instrumental Variable Analysis Using Time of Hospital Presentation. PLoS One (2016) 0.84
Short-term bleeding events observed with clopidogrel loading in acute ischemic stroke patients. J Stroke Cerebrovasc Dis (2013) 0.84
Real world research: a complementary method to establish the effectiveness of acupuncture. BMC Complement Altern Med (2015) 0.84
Epidemiologic and statistical methods for comparative effectiveness research. Heart Fail Clin (2012) 0.84
Nonresponse to interferon-α based treatment for chronic hepatitis C infection is associated with increased hazard of cirrhosis. PLoS One (2013) 0.83
Evidence for long-term impact of Pasos Adelante: using a community-wide survey to evaluate chronic disease risk modification in prior program participants. Int J Environ Res Public Health (2013) 0.83
Primary Stroke Center Hospitalization for Elderly Patients With Stroke: Implications for Case Fatality and Travel Times. JAMA Intern Med (2016) 0.83
Unresolved questions in rheumatology: motion for debate: the data support evidence-based management recommendations for cardiovascular disease in rheumatoid arthritis. Arthritis Rheum (2013) 0.83
Variations in postoperative complications according to race, ethnicity, and sex in older adults. J Am Geriatr Soc (2013) 0.82
From medical records to clinical science. Perm J (2012) 0.82
Accounting for unobservable exposure time bias when using Medicare prescription drug data. Medicare Medicaid Res Rev (2013) 0.82
What is the effect of area size when using local area practice style as an instrument? J Clin Epidemiol (2013) 0.82
Routine coronary angiographic follow-up and subsequent revascularization in patients with acute myocardial infarction. Heart Vessels (2008) 0.81
Making sense of the shadows: priorities for creating a learning healthcare system based on routinely collected data. BMJ Qual Saf (2015) 0.81
Infectious complications in head and neck cancer patients treated with cetuximab: propensity score and instrumental variable analysis. PLoS One (2012) 0.81
Evaluating comparative effectiveness with observational data: endoscopic ultrasound and survival in pancreatic cancer. Cancer (2013) 0.81
Methodological approaches to population based research of screening procedures in the presence of selection bias and exposure measurement error: colonoscopy and colorectal cancer outcomes in Ontario. BMC Med Res Methodol (2013) 0.81
Tonsillectomy and the risk for deep neck infection-a nationwide cohort study. PLoS One (2015) 0.81
Benefits of ICU admission in critically ill patients: whether instrumental variable methods or propensity scores should be used. BMC Med Res Methodol (2011) 0.81
Substance use, education, employment, and criminal activity outcomes of adolescents in outpatient chemical dependency programs. J Behav Health Serv Res (2007) 0.81
Gene expression profile testing for breast cancer and the use of chemotherapy, serious adverse effects, and costs of care. Breast Cancer Res Treat (2011) 0.80
Propensity score methods for bias reduction in the comparison of a treatment to a non-randomized control group. Stat Med (1998) 32.43
The implications of regional variations in Medicare spending. Part 1: the content, quality, and accessibility of care. Ann Intern Med (2003) 21.45
Primary angioplasty versus intravenous thrombolytic therapy for acute myocardial infarction: a quantitative review of 23 randomised trials. Lancet (2003) 19.90
Randomized, controlled trials, observational studies, and the hierarchy of research designs. N Engl J Med (2000) 19.56
The implications of regional variations in Medicare spending. Part 2: health outcomes and satisfaction with care. Ann Intern Med (2003) 18.65
A comparison of observational studies and randomized, controlled trials. N Engl J Med (2000) 14.11
Does more intensive treatment of acute myocardial infarction in the elderly reduce mortality? Analysis using instrumental variables. JAMA (1994) 11.32
Risk of death in elderly users of conventional vs. atypical antipsychotic medications. N Engl J Med (2005) 8.44
Cox regression analysis of multivariate failure time data: the marginal approach. Stat Med (1994) 7.62
Validating recommendations for coronary angiography following acute myocardial infarction in the elderly: a matched analysis using propensity scores. J Clin Epidemiol (2001) 7.46
Routine vs selective invasive strategies in patients with acute coronary syndromes: a collaborative meta-analysis of randomized trials. JAMA (2005) 6.81
Econometrics in outcomes research: the use of instrumental variables. Annu Rev Public Health (1998) 5.55
The relation between the availability of neonatal intensive care and neonatal mortality. N Engl J Med (2002) 5.18
Improving the quality of care for Medicare patients with acute myocardial infarction: results from the Cooperative Cardiovascular Project. JAMA (1998) 4.38
Rare outcomes, common treatments: analytic strategies using propensity scores. Ann Intern Med (2002) 4.38
1999 update: ACC/AHA guidelines for the management of patients with acute myocardial infarction. A report of the American College of Cardiology/American Heart Association Task Force on Practice Guidelines (Committee on Management of Acute Myocardial Infarction). J Am Coll Cardiol (1999) 4.15
Propensity score methods gave similar results to traditional regression modeling in observational studies: a systematic review. J Clin Epidemiol (2005) 3.76
Lipid-lowering therapy with statins in high-risk elderly patients: the treatment-risk paradox. JAMA (2004) 3.61
Risk-treatment mismatch in the pharmacotherapy of heart failure. JAMA (2005) 3.05
Determinants of the use of coronary angiography and revascularization after thrombolysis for acute myocardial infarction. N Engl J Med (1996) 2.83
Variation among hospitals in coronary-angiography practices and outcomes after myocardial infarction in a large health maintenance organization. N Engl J Med (1996) 2.55
Who is the marginal patient? Understanding instrumental variables estimates of treatment effects. Health Serv Res (1998) 2.50
The use of the propensity score for estimating treatment effects: administrative versus clinical data. Stat Med (2005) 2.31
Long-term outcomes of regional variations in intensity of invasive vs medical management of Medicare Patients with acute myocardial infarction. JAMA (2005) 2.14
Thrombolytic therapy for eligible elderly patients with acute myocardial infarction. JAMA (1997) 1.99
Discussing hidden bias in observational studies. Ann Intern Med (1991) 1.62
Hospital volume and surgical mortality in the United States. N Engl J Med (2002) 25.79
The implications of regional variations in Medicare spending. Part 1: the content, quality, and accessibility of care. Ann Intern Med (2003) 21.45
The implications of regional variations in Medicare spending. Part 2: health outcomes and satisfaction with care. Ann Intern Med (2003) 18.65
Surgeon volume and operative mortality in the United States. N Engl J Med (2003) 16.97
Epidemiology of obstructive sleep apnea: a population health perspective. Am J Respir Crit Care Med (2002) 14.26
Geography and the debate over Medicare reform. Health Aff (Millwood) (2003) 9.85
Rules for scoring respiratory events in sleep: update of the 2007 AASM Manual for the Scoring of Sleep and Associated Events. Deliberations of the Sleep Apnea Definitions Task Force of the American Academy of Sleep Medicine. J Clin Sleep Med (2012) 8.68
Clinical guidelines for the use of unattended portable monitors in the diagnosis of obstructive sleep apnea in adult patients. Portable Monitoring Task Force of the American Academy of Sleep Medicine. J Clin Sleep Med (2007) 8.25
Regional variations in diagnostic practices. N Engl J Med (2010) 7.44
Sedentary time and its association with risk for disease incidence, mortality, and hospitalization in adults: a systematic review and meta-analysis. Ann Intern Med (2015) 7.13
Relationship between adherence to evidence-based pharmacotherapy and long-term mortality after acute myocardial infarction. JAMA (2007) 7.11
Sleep-disordered breathing and mortality: a prospective cohort study. PLoS Med (2009) 7.06
Obstructive sleep apnea-hypopnea and incident stroke: the sleep heart health study. Am J Respir Crit Care Med (2010) 7.03
Creating accountable care organizations: the extended hospital medical staff. Health Aff (Millwood) (2006) 7.02
Predictors of sleep-disordered breathing in community-dwelling adults: the Sleep Heart Health Study. Arch Intern Med (2002) 5.98
Correlates of long sleep duration. Sleep (2006) 5.67
United States' trends and regional variations in lumbar spine surgery: 1992-2003. Spine (Phila Pa 1976) (2006) 5.64
Are regional variations in end-of-life care intensity explained by patient preferences?: A Study of the US Medicare Population. Med Care (2007) 5.42
Racial trends in the use of major procedures among the elderly. N Engl J Med (2005) 5.35
Sleep-disordered breathing, glucose intolerance, and insulin resistance: the Sleep Heart Health Study. Am J Epidemiol (2004) 5.26
The relation between the availability of neonatal intensive care and neonatal mortality. N Engl J Med (2002) 5.18
The Framingham Heart Study 100K SNP genome-wide association study resource: overview of 17 phenotype working group reports. BMC Med Genet (2007) 5.02
A national strategy to put accountable care into practice. Health Aff (Millwood) (2010) 4.99
Emergency department computed tomography utilization in the United States and Canada. Ann Emerg Med (2013) 4.81
Is technological change in medicine always worth it? The case of acute myocardial infarction. Health Aff (Millwood) (2006) 4.80
Association between reduced sleep and weight gain in women. Am J Epidemiol (2006) 4.59
Association of nocturnal arrhythmias with sleep-disordered breathing: The Sleep Heart Health Study. Am J Respir Crit Care Med (2006) 4.36
Spending differences associated with the Medicare Physician Group Practice Demonstration. JAMA (2012) 4.32
Discretionary decision making by primary care physicians and the cost of U.S. Health care. Health Aff (Millwood) (2008) 4.30
Thiazolidinediones and cardiovascular outcomes in older patients with diabetes. JAMA (2007) 4.25
Temporal trends in the utilization of diagnostic testing and treatments for cardiovascular disease in the United States, 1993-2001. Circulation (2006) 4.04
A genome-wide association study of pulmonary function measures in the Framingham Heart Study. PLoS Genet (2009) 3.78
Primary care and accountable care--two essential elements of delivery-system reform. N Engl J Med (2009) 3.61
Lipid-lowering therapy with statins in high-risk elderly patients: the treatment-risk paradox. JAMA (2004) 3.61
Regional variations in health care intensity and physician perceptions of quality of care. Ann Intern Med (2006) 3.30
The risk of missed diagnosis of acute myocardial infarction associated with emergency department volume. Ann Emerg Med (2006) 3.29
Hospital-level racial disparities in acute myocardial infarction treatment and outcomes. Med Care (2005) 3.17
The effects of age, sex, ethnicity, and sleep-disordered breathing on sleep architecture. Arch Intern Med (2004) 3.09
Effectiveness of public report cards for improving the quality of cardiac care: the EFFECT study: a randomized trial. JAMA (2009) 3.08
Detection of prostate cancer via biopsy in the Medicare-SEER population during the PSA era. J Natl Cancer Inst (2007) 3.07
Risk-treatment mismatch in the pharmacotherapy of heart failure. JAMA (2005) 3.05
Getting past denial--the high cost of health care in the United States. N Engl J Med (2009) 2.88
Comparing hierarchical modeling with traditional logistic regression analysis among patients hospitalized with acute myocardial infarction: should we be analyzing cardiovascular outcomes data differently? Am Heart J (2003) 2.88
Maternal ethnicity and risk of neural tube defects: a population-based study. CMAJ (2004) 2.81
Cardiovascular health after maternal placental syndromes (CHAMPS): population-based retrospective cohort study. Lancet (2005) 2.76
Evaluating the efficiency of california providers in caring for patients with chronic illnesses. Health Aff (Millwood) (2007) 2.72
The relation between patients' outcomes and the volume of cardioverter-defibrillator implantation procedures performed by physicians treating Medicare beneficiaries. J Am Coll Cardiol (2005) 2.71
Observational intensity bias associated with illness adjustment: cross sectional analysis of insurance claims. BMJ (2013) 2.70
Variations in the longitudinal efficiency of academic medical centers. Health Aff (Millwood) (2004) 2.59
Racial and ethnic differences in preferences for end-of-life treatment. J Gen Intern Med (2009) 2.58
Revisiting Rose: strategies for reducing coronary heart disease. BMJ (2006) 2.53
Association of hospital spending intensity with mortality and readmission rates in Ontario hospitals. JAMA (2012) 2.47
Association between glycemic state and lung function: the Framingham Heart Study. Am J Respir Crit Care Med (2003) 2.38
Proliferation of prenatal ultrasonography. CMAJ (2010) 2.33
Use of Medicare claims data to monitor provider-specific performance among patients with severe chronic illness. Health Aff (Millwood) (2004) 2.33
Improved outcomes with early collaborative care of ambulatory heart failure patients discharged from the emergency department. Circulation (2010) 2.29
Association of restless legs syndrome and cardiovascular disease in the Sleep Heart Health Study. Neurology (2008) 2.28
Continuity of care and the risk of preventable hospitalization in older adults. JAMA Intern Med (2013) 2.27
Derivation of a termination-of-resuscitation guideline for emergency medical technicians using automated external defibrillators. Acad Emerg Med (2002) 2.22
Regional variation in carotid artery stenting and endarterectomy in the Medicare population. Circ Cardiovasc Qual Outcomes (2009) 2.21
Variation in the tendency of primary care physicians to intervene. Arch Intern Med (2005) 2.17
Effect of cardiac and noncardiac conditions on survival after defibrillator implantation. J Am Coll Cardiol (2007) 2.15
Long-term outcomes of regional variations in intensity of invasive vs medical management of Medicare Patients with acute myocardial infarction. JAMA (2005) 2.14
Variations in hospital resource use for Medicare and privately insured populations in California. Health Aff (Millwood) (2008) 2.10
Sleepiness in patients with moderate to severe sleep-disordered breathing. Sleep (2005) 2.09
Relationship of primary care physicians' patient caseload with measurement of quality and cost performance. JAMA (2009) 2.09
Malpractice liability costs and the practice of medicine in the Medicare program. Health Aff (Millwood) (2007) 2.08
The elusive connection between health care spending and quality. Health Aff (Millwood) (2008) 2.07
Association of neural tube defects and folic acid food fortification in Canada. Lancet (2002) 2.07
Effectiveness and efficiency of different guidelines on statin treatment for preventing deaths from coronary heart disease: modelling study. BMJ (2006) 2.03
Vitamin B12 and the risk of neural tube defects in a folic-acid-fortified population. Epidemiology (2007) 2.00
Medical care--is more always better? N Engl J Med (2003) 1.98
How the center for Medicare and Medicaid innovation should test accountable care organizations. Health Aff (Millwood) (2010) 1.97
Regional intensity of vascular care and lower extremity amputation rates. J Vasc Surg (2013) 1.95
Life expectancy after an index hospitalization for patients with heart failure: a population-based study. Am Heart J (2008) 1.92
Folic acid food fortification is associated with a decline in neuroblastoma. Clin Pharmacol Ther (2003) 1.91
How much do patients' preferences contribute to resource use? Health Aff (Millwood) (2009) 1.88
A telemedicine intervention to improve adherence to continuous positive airway pressure: a randomised controlled trial. Thorax (2010) 1.88
Medical care inconsistent with patients' treatment goals: association with 1-year Medicare resource use and survival. J Am Geriatr Soc (2002) 1.86
Early deaths in patients with heart failure discharged from the emergency department: a population-based analysis. Circ Heart Fail (2010) 1.83
Temporal trends in the use of percutaneous coronary intervention and coronary artery bypass surgery in New York State and Ontario. Circulation (2010) 1.82
Survival after hepatic resection of colorectal cancer metastases: a national experience. Cancer (2009) 1.81
Polysomnography performed in the unattended home versus the attended laboratory setting--Sleep Heart Health Study methodology. Sleep (2004) 1.81
Accountable Care Organizations in the United States: market and demographic factors associated with formation. Health Serv Res (2013) 1.80
Regional differences in process of care and outcomes for older acute myocardial infarction patients in the United States and Ontario, Canada. Circulation (2006) 1.78