Published in Health Serv Res on August 01, 2003
Predicting mortality and healthcare utilization with a single question. Health Serv Res (2005) 4.19
A combined comorbidity score predicted mortality in elderly patients better than existing scores. J Clin Epidemiol (2011) 3.98
A dynamic network approach for the study of human phenotypes. PLoS Comput Biol (2009) 3.62
Derivation and validation of an index to predict early death or unplanned readmission after discharge from hospital to the community. CMAJ (2010) 3.60
Consistency of performance ranking of comorbidity adjustment scores in Canadian and U.S. utilization data. J Gen Intern Med (2004) 1.79
Development of a comorbidity index for use in obstetric patients. Obstet Gynecol (2013) 1.65
Diagnoses indicating pain and analgesic drug prescription in patients with dementia: a comparison to age- and sex-matched controls. BMC Geriatr (2014) 1.51
Developing a summary hospital mortality index: retrospective analysis in English hospitals over five years. BMJ (2012) 1.48
Comparing comorbidity measures for predicting mortality and hospitalization in three population-based cohorts. BMC Health Serv Res (2011) 1.39
Role of disease risk scores in comparative effectiveness research with emerging therapies. Pharmacoepidemiol Drug Saf (2012) 1.32
The effect of hospital-acquired infection with Clostridium difficile on length of stay in hospital. CMAJ (2011) 1.31
Comparison of different comorbidity measures for use with administrative data in predicting short- and long-term mortality. BMC Health Serv Res (2010) 1.28
Comorbidity risk-adjustment strategies are comparable among persons with hip fracture. J Clin Epidemiol (2008) 1.16
The Elixhauser comorbidity method outperforms the Charlson index in predicting inpatient death after orthopaedic surgery. Clin Orthop Relat Res (2014) 1.16
Nursing home residents and enrollment in Medicare Part D. J Am Geriatr Soc (2009) 1.14
The complex relation between bisphosphonate adherence and fracture reduction. J Clin Endocrinol Metab (2010) 0.99
Cost sharing and decreased branded oral anti-diabetic medication adherence among elderly Part D Medicare beneficiaries. J Gen Intern Med (2013) 0.98
Development and validation of the mortality risk for trauma comorbidity index. Ann Surg (2010) 0.95
Mapping the prescriptiome to fractures in men--a national analysis of prescription history and fracture risk. Osteoporos Int (2008) 0.93
Comparison of health outcomes for male seniors in the Veterans Health Administration and Medicare Advantage plans. Health Serv Res (2009) 0.92
Effectiveness and Safety of Immunomodulators With Anti-Tumor Necrosis Factor Therapy in Crohn's Disease. Clin Gastroenterol Hepatol (2015) 0.91
Comparison of Comorbidity Scores in Predicting Surgical Outcomes. Med Care (2016) 0.90
Trends in 1-year survival of people admitted to hospital in Ontario, 1994-2009. CMAJ (2013) 0.86
Changes in cholesterol-lowering medications use over a decade in community-dwelling older adults. Ann Pharmacother (2013) 0.85
An observational study of glucocorticoid-induced osteoporosis prophylaxis in a national cohort of male veterans with rheumatoid arthritis. Osteoporos Int (2010) 0.83
Nursing home admission during the first year after hospitalization - the contribution of cognitive impairment. PLoS One (2014) 0.83
Does improved continuity of primary care affect clinician-patient communication in VA? J Gen Intern Med (2014) 0.83
Disparities in combination drug therapy use in older adults with coronary heart disease: a cross-sectional time-series in a nationally representative US sample. Drugs Aging (2010) 0.81
Sense of coherence and quality of life in older in-hospital patients without cognitive impairment--a 12 month follow-up study. BMC Psychiatry (2014) 0.80
Evaluating comorbidity scores based on health service expenditures. Medicare Medicaid Res Rev (2012) 0.80
The impact of statins on health services utilization and mortality in older adults discharged from hospital with ischemic heart disease: a cohort study. BMC Health Serv Res (2009) 0.80
A population-based assessment of the drug interaction between levothyroxine and warfarin. Clin Pharmacol Ther (2012) 0.80
Incorporating mortality risk into estimates of 5-year glaucoma risk. Am J Ophthalmol (2009) 0.79
An observational study of musculoskeletal pain among patients receiving bisphosphonate therapy. Mayo Clin Proc (2010) 0.79
Inpatient mortality after orthopaedic surgery. Int Orthop (2015) 0.77
Fracture rate associated with quality metric-based anti-osteoporosis treatment in glucocorticoid-induced osteoporosis. Osteoporos Int (2015) 0.77
Using clinical variables and drug prescription data to control for confounding in outcome comparisons between hospitals. BMC Health Serv Res (2014) 0.76
Development of an automated, real time surveillance tool for predicting readmissions at a community hospital. Appl Clin Inform (2013) 0.76
Addition of 25-hydroxyvitamin D levels to the Deyo-Charlson Comorbidity Index improves 90-day mortality prediction in critically ill patients. J Intensive Care (2016) 0.75
Modification of claims-based measures improves identification of comorbidities in non-elderly women undergoing mastectomy for breast cancer: a retrospective cohort study. BMC Health Serv Res (2016) 0.75
Statin use and decline in gait speed in community-dwelling older adults. J Am Geriatr Soc (2014) 0.75
The measured effect magnitude of co-morbidities on burn injury mortality. Burns (2016) 0.75
Transfusion Patterns in All Patients Admitted to the Intensive Care Unit and in Those Who Die in Hospital: A Descriptive Analysis. PLoS One (2015) 0.75
Factors associated with 30-day mortality in elderly inpatients with community acquired pneumonia during two influenza seasons. Hum Vaccin Immunother (2016) 0.75
Utilizing national patient-register data to control for comorbidity in prognostic studies. Clin Epidemiol (2014) 0.75
Three-year mortality in previously hospitalized older patients from rural areas--the importance of co-morbidity and self-reported poor health. BMC Geriatr (2013) 0.75
Tribute to John M. Eisenberg. Health Serv Res (2003) 0.75
New Morbidity and Comorbidity Scores based on the Structure of the ICD-10. PLoS One (2015) 0.75
Comparison of outcomes in patients with methicillin-susceptible Staphylococcus aureus (MSSA) bacteremia who are treated with β-lactam vs vancomycin empiric therapy: a retrospective cohort study. BMC Infect Dis (2016) 0.75
Comparative effectiveness of β-lactam versus vancomycin empiric therapy in patients with methicillin-susceptible Staphylococcus aureus (MSSA) bacteremia. Ann Clin Microbiol Antimicrob (2016) 0.75
The "old" 15 mm renal stone size limit for RIRS remains a clinically significant threshold size. World J Urol (2017) 0.75
The effects of state-level expenditures for home- and community-based services on the risk of becoming a long-stay nursing home resident after hip fracture. Osteoporos Int (2015) 0.75
Central Nervous System Medication Burden and Serious Falls in Older Nursing Home Residents. J Am Geriatr Soc (2017) 0.75
A new method of classifying prognostic comorbidity in longitudinal studies: development and validation. J Chronic Dis (1987) 174.79
Adapting a clinical comorbidity index for use with ICD-9-CM administrative databases. J Clin Epidemiol (1992) 60.45
Prediction of coronary heart disease using risk factor categories. Circulation (1998) 48.81
Comorbidity measures for use with administrative data. Med Care (1998) 46.67
A simulation study of the number of events per variable in logistic regression analysis. J Clin Epidemiol (1996) 20.25
Adapting a clinical comorbidity index for use with ICD-9-CM administrative data: differing perspectives. J Clin Epidemiol (1993) 13.16
The treatment of unrelated disorders in patients with chronic medical diseases. N Engl J Med (1998) 9.19
Performance of comorbidity scores to control for confounding in epidemiologic studies using claims data. Am J Epidemiol (2001) 7.04
The accuracy of Medicare's hospital claims data: progress has been made, but problems remain. Am J Public Health (1992) 6.97
A chronic disease score from automated pharmacy data. J Clin Epidemiol (1992) 6.38
Non-steroidal anti-inflammatory drugs and risk of serious coronary heart disease: an observational cohort study. Lancet (2002) 5.17
Comorbidities, complications, and coding bias. Does the number of diagnosis codes matter in predicting in-hospital mortality? JAMA (1992) 5.07
Confounding by indication. Epidemiology (1996) 5.01
A chronic disease score with empirically derived weights. Med Care (1995) 4.34
Practical considerations on the use of the Charlson comorbidity index with administrative data bases. J Clin Epidemiol (1996) 4.03
Bias in the coding of hospital discharge data and its implications for quality assessment. Med Care (1994) 3.56
Does body mass index adequately capture the relation of body composition and body size to health outcomes? Am J Epidemiol (1998) 3.07
HMG-CoA reductase inhibitors and the risk of hip fractures in elderly patients. JAMA (2000) 3.03
Use of comorbidity scores for control of confounding in studies using administrative databases. Int J Epidemiol (2000) 2.94
Risk adjustment in outcome assessment: the Charlson comorbidity index. Methods Inf Med (1993) 2.87
Paradoxical relations of drug treatment with mortality in older persons. Epidemiology (2001) 2.52
Agreement between physicians' office records and Medicare Part B claims data. Health Care Financ Rev (1995) 2.47
Searching for an improved clinical comorbidity index for use with ICD-9-CM administrative data. J Clin Epidemiol (1996) 2.43
Identifying adults at increased risk of coronary disease. How well do the current cholesterol guidelines work? JAMA (1995) 1.98
The performance of different lookback periods and sources of information for Charlson comorbidity adjustment in Medicare claims. Med Care (1999) 1.94
Recent developments and future issues in the use of health status assessment measures in clinical settings. Med Care (1992) 1.87
Comparing clinical information with claims data: some similarities and differences. J Clin Epidemiol (1991) 1.83
The association between hospital type and mortality and length of stay: a study of 16.9 million hospitalized Medicare beneficiaries. Med Care (2000) 1.78
Clinical versus administrative data bases for CABG surgery. Does it matter? Med Care (1992) 1.70
Medicaid data as a resource for epidemiologic studies: strengths and limitations. J Clin Epidemiol (1989) 1.61
Causation of bias: the episcope. Epidemiology (2001) 1.57
Agreement between drug treatment data and a discharge diagnosis of diabetes mellitus in the elderly. Am J Epidemiol (1999) 1.32
Selecting a patient characteristics index for the prediction of medical outcomes using administrative claims data. J Clin Epidemiol (1995) 1.27
Risk adjustment in claims-based research: the search for efficient approaches. J Clin Epidemiol (1989) 1.27
How well do prediction equations predict? Using receiver operating characteristic curves and accuracy curves to compare validity and generalizability. Epidemiology (1993) 1.20
Aging, comorbidity, and reduced rates of drug treatment for diabetes mellitus. J Clin Epidemiol (1999) 1.16
Strategies for improving comorbidity measures based on Medicare and Medicaid claims data. J Clin Epidemiol (2000) 1.15
Controlling for confounding by indication for treatment. Are administrative data equivalent to clinical data? Med Care (1995) 1.07
Epidemiology in Plato's cave: claims data and clinical reality. J Clin Epidemiol (1991) 0.87
Rosuvastatin to prevent vascular events in men and women with elevated C-reactive protein. N Engl J Med (2008) 43.36
The epidemiology of major depressive disorder: results from the National Comorbidity Survey Replication (NCS-R). JAMA (2003) 34.83
Prevalence, severity, and unmet need for treatment of mental disorders in the World Health Organization World Mental Health Surveys. JAMA (2004) 22.38
Variable selection for propensity score models. Am J Epidemiol (2006) 10.68
Reduction in C-reactive protein and LDL cholesterol and cardiovascular event rates after initiation of rosuvastatin: a prospective study of the JUPITER trial. Lancet (2009) 10.52
A review of uses of health care utilization databases for epidemiologic research on therapeutics. J Clin Epidemiol (2005) 8.77
Long-term, low-intensity warfarin therapy for the prevention of recurrent venous thromboembolism. N Engl J Med (2003) 8.65
Risk of death in elderly users of conventional vs. atypical antipsychotic medications. N Engl J Med (2005) 8.44
Vitamins E and C in the prevention of cardiovascular disease in men: the Physicians' Health Study II randomized controlled trial. JAMA (2008) 8.32
High-dimensional propensity score adjustment in studies of treatment effects using health care claims data. Epidemiology (2009) 7.40
A review of the application of propensity score methods yielded increasing use, advantages in specific settings, but not substantially different estimates compared with conventional multivariable methods. J Clin Epidemiol (2005) 7.31
Long-term persistence in use of statin therapy in elderly patients. JAMA (2002) 7.19
Accuracy of Medicare claims-based diagnosis of acute myocardial infarction: estimating positive predictive value on the basis of review of hospital records. Am Heart J (2004) 6.57
Results of multivariable logistic regression, propensity matching, propensity adjustment, and propensity-based weighting under conditions of nonuniform effect. Am J Epidemiol (2005) 6.20
Trends in suicide ideation, plans, gestures, and attempts in the United States, 1990-1992 to 2001-2003. JAMA (2005) 5.70
A randomized study of how physicians interpret research funding disclosures. N Engl J Med (2012) 5.47
Multivitamins in the prevention of cancer in men: the Physicians' Health Study II randomized controlled trial. JAMA (2012) 5.25
Vitamins E and C in the prevention of prostate and total cancer in men: the Physicians' Health Study II randomized controlled trial. JAMA (2008) 5.13
Antidepressant use in pregnancy and the risk of cardiac defects. N Engl J Med (2014) 4.99
Nonadherence to adjuvant tamoxifen therapy in women with primary breast cancer. J Clin Oncol (2003) 4.95
Risk of death and cardiovascular events in initially healthy women with new-onset atrial fibrillation. JAMA (2011) 4.73
Self-management education programs in chronic disease: a systematic review and methodological critique of the literature. Arch Intern Med (2004) 4.68
Full coverage for preventive medications after myocardial infarction. N Engl J Med (2011) 4.51
The comparative safety of analgesics in older adults with arthritis. Arch Intern Med (2010) 4.47
Cardiovascular benefits and diabetes risks of statin therapy in primary prevention: an analysis from the JUPITER trial. Lancet (2012) 4.46
Suicide risk during antidepressant treatment. Am J Psychiatry (2006) 4.41
Multivitamins in the prevention of cardiovascular disease in men: the Physicians' Health Study II randomized controlled trial. JAMA (2012) 4.40
New FDA breakthrough-drug category--implications for patients. N Engl J Med (2014) 4.30
Adherence to therapy with oral antineoplastic agents. J Natl Cancer Inst (2002) 4.16
HDL cholesterol and residual risk of first cardiovascular events after treatment with potent statin therapy: an analysis from the JUPITER trial. Lancet (2010) 4.07
Outcomes of reference pricing for angiotensin-converting-enzyme inhibitors. N Engl J Med (2002) 4.07
Depression and risk of sudden cardiac death and coronary heart disease in women: results from the Nurses' Health Study. J Am Coll Cardiol (2009) 3.99
A combined comorbidity score predicted mortality in elderly patients better than existing scores. J Clin Epidemiol (2011) 3.98
Anticonvulsant medications and the risk of suicide, attempted suicide, or violent death. JAMA (2010) 3.85
Adherence to lipid-lowering therapy and the use of preventive health services: an investigation of the healthy user effect. Am J Epidemiol (2007) 3.82
The epidemiology of prescriptions abandoned at the pharmacy. Ann Intern Med (2010) 3.78
The implications of choice: prescribing generic or preferred pharmaceuticals improves medication adherence for chronic conditions. Arch Intern Med (2006) 3.64
Burden of changes in pill appearance for patients receiving generic cardiovascular medications after myocardial infarction: cohort and nested case-control studies. Ann Intern Med (2014) 3.62
The global burden of mental disorders: an update from the WHO World Mental Health (WMH) surveys. Epidemiol Psichiatr Soc (2009) 3.55
Evaluating short-term drug effects using a physician-specific prescribing preference as an instrumental variable. Epidemiology (2006) 3.54
Prevalence and effects of mood disorders on work performance in a nationally representative sample of U.S. workers. Am J Psychiatry (2006) 3.47
Individual and societal effects of mental disorders on earnings in the United States: results from the national comorbidity survey replication. Am J Psychiatry (2008) 3.45
Effect of smoking on comparative efficacy of antiplatelet agents: systematic review, meta-analysis, and indirect comparison. BMJ (2013) 3.43
The quality of pharmacologic care for vulnerable older patients. Ann Intern Med (2004) 3.34
Analytic strategies to adjust confounding using exposure propensity scores and disease risk scores: nonsteroidal antiinflammatory drugs and short-term mortality in the elderly. Am J Epidemiol (2005) 3.33
Risk of death associated with the use of conventional versus atypical antipsychotic drugs among elderly patients. CMAJ (2007) 3.30
The implications of therapeutic complexity on adherence to cardiovascular medications. Arch Intern Med (2011) 3.27
Rethinking the use of physicians as hired expert lecturers. Ann Intern Med (2014) 3.22
Blood pressure and risk of developing type 2 diabetes mellitus: the Women's Health Study. Eur Heart J (2007) 3.21
Drug-review deadlines and safety problems. N Engl J Med (2008) 3.16
Variations in pill appearance of antiepileptic drugs and the risk of nonadherence. JAMA Intern Med (2013) 3.13
Cardiovascular outcomes and mortality in patients using clopidogrel with proton pump inhibitors after percutaneous coronary intervention or acute coronary syndrome. Circulation (2009) 3.09
Balancing innovation, access, and profits--market exclusivity for biologics. N Engl J Med (2009) 3.08
Tumor necrosis factor alpha antagonist use and cancer in patients with rheumatoid arthritis. Arthritis Rheum (2006) 3.04
High-density lipoprotein cholesterol, size, particle number, and residual vascular risk after potent statin therapy. Circulation (2013) 3.03
Confounding control in healthcare database research: challenges and potential approaches. Med Care (2010) 3.01
Relationship between selective cyclooxygenase-2 inhibitors and acute myocardial infarction in older adults. Circulation (2004) 2.98
University-based science and biotechnology products: defining the boundaries of intellectual property. JAMA (2005) 2.95
Compliance with osteoporosis medications. Arch Intern Med (2005) 2.91
Noncompliance with antihypertensive medications: the impact of depressive symptoms and psychosocial factors. J Gen Intern Med (2002) 2.85
Nonsteroidal anti-inflammatory drug use and acute myocardial infarction. Arch Intern Med (2002) 2.82
Selective prescribing led to overestimation of the benefits of lipid-lowering drugs. J Clin Epidemiol (2006) 2.81
Internet marketing of herbal products. JAMA (2003) 2.77
Economic implications of evidence-based prescribing for hypertension: can better care cost less? JAMA (2004) 2.77
Treatment effects in the presence of unmeasured confounding: dealing with observations in the tails of the propensity score distribution--a simulation study. Am J Epidemiol (2010) 2.74
Inhibition of clinical benefits of aspirin on first myocardial infarction by nonsteroidal antiinflammatory drugs. Circulation (2003) 2.73
The comparative safety of opioids for nonmalignant pain in older adults. Arch Intern Med (2010) 2.71
Comparative mortality risk of anemia management practices in incident hemodialysis patients. JAMA (2010) 2.71
Sending pharma better signals. Science (2005) 2.69
Identification of individuals with CKD from Medicare claims data: a validation study. Am J Kidney Dis (2005) 2.65
Prevalence, comorbidity, and service utilization for mood disorders in the United States at the beginning of the twenty-first century. Annu Rev Clin Psychol (2007) 2.61
Characteristics of clinical trials to support approval of orphan vs nonorphan drugs for cancer. JAMA (2011) 2.60
Improvements in long-term mortality after myocardial infarction and increased use of cardiovascular drugs after discharge: a 10-year trend analysis. J Am Coll Cardiol (2008) 2.58
Excess weight and the risk of incident coronary heart disease among men and women. Obesity (Silver Spring) (2009) 2.56
Performance of propensity score calibration--a simulation study. Am J Epidemiol (2007) 2.56
Adjusting effect estimates for unmeasured confounding with validation data using propensity score calibration. Am J Epidemiol (2005) 2.55