Published in Int J Biostat on January 01, 2007
Intensity-modulated radiation therapy, proton therapy, or conformal radiation therapy and morbidity and disease control in localized prostate cancer. JAMA (2012) 5.90
A most stubborn bias: no adjustment method fully resolves confounding by indication in observational studies. J Clin Epidemiol (2009) 2.33
Heterogeneity in action: the role of passive personalization in comparative effectiveness research. Health Econ (2013) 2.04
Instrumental variable methods in comparative safety and effectiveness research. Pharmacoepidemiol Drug Saf (2010) 1.96
Instrumental variable methods for causal inference. Stat Med (2014) 1.90
Instrumental variables I: instrumental variables exploit natural variation in nonexperimental data to estimate causal relationships. J Clin Epidemiol (2009) 1.73
Physician preference motivates the use of anti-tumor necrosis factor therapy independent of clinical disease activity. Arthritis Care Res (Hoboken) (2010) 1.68
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
An instrumental variable approach finds no associated harm or benefit with early dialysis initiation in the United States. Kidney Int (2014) 1.53
Intent-to-Treat vs. Non-Intent-to-Treat Analyses under Treatment Non-Adherence in Mental Health Randomized Trials. Psychiatr Ann (2008) 1.36
Identification of causal effects on binary outcomes using structural mean models. Biostatistics (2010) 1.10
Selecting on treatment: a pervasive form of bias in instrumental variable analyses. Am J Epidemiol (2015) 1.07
Physicians' prescribing preferences were a potential instrument for patients' actual prescriptions of antidepressants. J Clin Epidemiol (2013) 1.02
Acupuncture and chiropractic care for chronic pain in an integrated health plan: a mixed methods study. BMC Complement Altern Med (2011) 0.97
Think globally, act globally: An epidemiologist's perspective on instrumental variable estimation. Stat Sci (2014) 0.90
Safety and effectiveness of bivalirudin in routine care of patients undergoing percutaneous coronary intervention. Eur Heart J (2009) 0.89
Toward a clearer portrayal of confounding bias in instrumental variable applications. Epidemiology (2015) 0.86
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
Definition and evaluation of the monotonicity condition for preference-based instruments. Epidemiology (2015) 0.82
Using an instrumental variable to test for unmeasured confounding. Stat Med (2014) 0.82
Methodological considerations in assessing the effectiveness of antidepressant medication continuation during pregnancy using administrative data. Pharmacoepidemiol Drug Saf (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
Instrumental variable applications using nursing home prescribing preferences in comparative effectiveness research. Pharmacoepidemiol Drug Saf (2014) 0.79
Can we make smart choices between OLS and contaminated IV methods? Health Econ (2013) 0.78
An even clearer portrait of bias in observational studies? Epidemiology (2015) 0.77
Are all biases missing data problems? Curr Epidemiol Rep (2015) 0.77
Instrumental variable meta-analysis of individual patient data: application to adjust for treatment non-compliance. BMC Med Res Methodol (2011) 0.77
Impact of Adjuvant Chemotherapy on Breast Cancer Survival: A Real-World Population. PLoS One (2015) 0.75
Outcomes after helicopter versus ground emergency medical services for major trauma--propensity score and instrumental variable analyses: a retrospective nationwide cohort study. Scand J Trauma Resusc Emerg Med (2016) 0.75
External adjustment sensitivity analysis for unmeasured confounding: an application to coronary stent outcomes, Pennsylvania 2004-2008. Health Serv Res (2012) 0.75
Variation between hospitals in inpatient admission practices for self-harm patients and its impact on repeat presentation. Soc Psychiatry Psychiatr Epidemiol (2016) 0.75
Comparative Effectiveness of Oxaliplatin Versus 5-flourouricil in Older Adults: An Instrumental Variable Analysis. Epidemiology (2015) 0.75
Computed tomography during initial management and mortality among hemodynamically unstable blunt trauma patients: a nationwide retrospective cohort study. Scand J Trauma Resusc Emerg Med (2017) 0.75
Instruments for causal inference: an epidemiologist's dream? Epidemiology (2006) 8.50
Risk of death in elderly users of conventional vs. atypical antipsychotic medications. N Engl J Med (2005) 8.44
An introduction to instrumental variables for epidemiologists. Int J Epidemiol (2000) 6.17
Confounding by indication. Epidemiology (1996) 5.01
Evaluating short-term drug effects using a physician-specific prescribing preference as an instrumental variable. Epidemiology (2006) 3.54
Instrumental variables: application and limitations. Epidemiology (2006) 3.03
Uses of ecologic studies in the assessment of intended treatment effects. J Clin Epidemiol (1999) 2.64
Who is the marginal patient? Understanding instrumental variables estimates of treatment effects. Health Serv Res (1998) 2.50
A Medicare database review found that physician preferences increasingly outweighed patient characteristics as determinants of first-time prescriptions for COX-2 inhibitors. J Clin Epidemiol (2005) 1.83
Was breast conserving surgery underutilized for early stage breast cancer? Instrumental variables evidence for stage II patients from Iowa. Health Serv Res (2003) 1.72
Undertreatment of hyperlipidemia in the secondary prevention of coronary artery disease. J Gen Intern Med (1999) 1.64
Upper gastrointestinal bleeding associated with the use of NSAIDs: newer versus older agents. Drug Saf (2004) 1.56
Determinants of selective cyclooxygenase-2 inhibitor prescribing: are patient or physician characteristics more important? Am J Med (2003) 1.53
Combining ecological and individual variables to reduce confounding by indication: case study--subarachnoid hemorrhage treatment. J Clin Epidemiol (2000) 1.42
Over and under-utilization of cyclooxygenase-2 selective inhibitors by primary care physicians and specialists: the tortoise and the hare revisited. J Gen Intern Med (2006) 1.02
The medical license number accurately identifies the prescribing physician in a large pharmacy claims database. Med Care (2007) 0.91
Variable selection for propensity score models. Am J Epidemiol (2006) 10.68
Risk of death in elderly users of conventional vs. atypical antipsychotic medications. N Engl J Med (2005) 8.44
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
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
Indications for propensity scores and review of their use in pharmacoepidemiology. Basic Clin Pharmacol Toxicol (2006) 4.70
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
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
The epidemiology of prescriptions abandoned at the pharmacy. Ann Intern Med (2010) 3.78
Evaluating short-term drug effects using a physician-specific prescribing preference as an instrumental variable. Epidemiology (2006) 3.54
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
The implications of therapeutic complexity on adherence to cardiovascular medications. Arch Intern Med (2011) 3.27
Cardiovascular outcomes and mortality in patients using clopidogrel with proton pump inhibitors after percutaneous coronary intervention or acute coronary syndrome. Circulation (2009) 3.09
Tumor necrosis factor alpha antagonist use and cancer in patients with rheumatoid arthritis. Arthritis Rheum (2006) 3.04
Association between disease-modifying antirheumatic drugs and diabetes risk in patients with rheumatoid arthritis and psoriasis. JAMA (2011) 3.02
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
Selective prescribing led to overestimation of the benefits of lipid-lowering drugs. J Clin Epidemiol (2006) 2.81
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
The U.S. Food and Drug Administration's Mini-Sentinel program: status and direction. Pharmacoepidemiol Drug Saf (2012) 2.70
Identification of individuals with CKD from Medicare claims data: a validation study. Am J Kidney Dis (2005) 2.65
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
Repeated hospitalizations predict mortality in the community population with heart failure. Am Heart J (2007) 2.55
Medicaid prior-authorization programs and the use of cyclooxygenase-2 inhibitors. N Engl J Med (2004) 2.52
Evaluating uses of data mining techniques in propensity score estimation: a simulation study. Pharmacoepidemiol Drug Saf (2008) 2.42
Treatment of older adult patients diagnosed with rheumatoid arthritis: improved but not optimal. Arthritis Rheum (2007) 2.18
Patterns of medication initiation in newly diagnosed diabetes mellitus: quality and cost implications. Am J Med (2012) 2.13
Assessing health state utilities in elderly patients at cardiovascular risk. Med Decis Making (2006) 2.12
Trouble getting started: predictors of primary medication nonadherence. Am J Med (2011) 2.09
Association between the Part D coverage gap and adverse health outcomes. J Am Geriatr Soc (2012) 1.99
GRACE principles: recognizing high-quality observational studies of comparative effectiveness. Am J Manag Care (2010) 1.98
Instrumental variable methods in comparative safety and effectiveness research. Pharmacoepidemiol Drug Saf (2010) 1.96
Immunosuppressive medications and hospitalization for cardiovascular events in patients with rheumatoid arthritis. Arthritis Rheum (2006) 1.95
European healthcare policies for controlling drug expenditure. Pharmacoeconomics (2003) 1.95
Cardiovascular outcomes in new users of coxibs and nonsteroidal antiinflammatory drugs: high-risk subgroups and time course of risk. Arthritis Rheum (2006) 1.94
Potential causes of higher mortality in elderly users of conventional and atypical antipsychotic medications. J Am Geriatr Soc (2008) 1.84
One-to-many propensity score matching in cohort studies. Pharmacoepidemiol Drug Saf (2012) 1.82
Effects of noncardiovascular comorbidities on antihypertensive use in elderly hypertensives. Hypertension (2005) 1.77
Effects of adjusting for instrumental variables on bias and precision of effect estimates. Am J Epidemiol (2011) 1.77
Relationship between COX-2 specific inhibitors and hypertension. Hypertension (2004) 1.75
The implications of propensity score variable selection strategies in pharmacoepidemiology: an empirical illustration. Pharmacoepidemiol Drug Saf (2011) 1.74
Instrumental variables I: instrumental variables exploit natural variation in nonexperimental data to estimate causal relationships. J Clin Epidemiol (2009) 1.73
Covariate selection in high-dimensional propensity score analyses of treatment effects in small samples. Am J Epidemiol (2011) 1.72
Agreement of diagnosis and its date for hematologic malignancies and solid tumors between medicare claims and cancer registry data. Cancer Causes Control (2007) 1.66
Physician follow-up and provider continuity are associated with long-term medication adherence: a study of the dynamics of statin use. Arch Intern Med (2007) 1.62
Analysis of factors associated with statin adherence in a hierarchical model considering physician, pharmacy, patient, and prescription characteristics. J Manag Care Pharm (2007) 1.62
Effects of prescription coinsurance and income-based deductibles on net health plan spending for older users of inhaled medications. Med Care (2009) 1.62
Instrumental variable analysis for estimation of treatment effects with dichotomous outcomes. Am J Epidemiol (2008) 1.59
At Pitney Bowes, value-based insurance design cut copayments and increased drug adherence. Health Aff (Millwood) (2010) 1.59
The impact of reducing cardiovascular medication copayments on health spending and resource utilization. J Am Coll Cardiol (2012) 1.58
Type of stress ulcer prophylaxis and risk of nosocomial pneumonia in cardiac surgical patients: cohort study. BMJ (2013) 1.58
The incident user design in comparative effectiveness research. Pharmacoepidemiol Drug Saf (2012) 1.56
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
Adjustments for unmeasured confounders in pharmacoepidemiologic database studies using external information. Med Care (2007) 1.56
Impact of two sequential drug cost-sharing policies on the use of inhaled medications in older patients with chronic obstructive pulmonary disease or asthma. Clin Ther (2006) 1.55
Underuse of controller medications among children with persistent asthma in the Ohio medicaid population: evolving differences with new medications. Ambul Pediatr (2005) 1.53
Determinants of selective cyclooxygenase-2 inhibitor prescribing: are patient or physician characteristics more important? Am J Med (2003) 1.53
Statins and the risk of lung, breast, and colorectal cancer in the elderly. Circulation (2006) 1.51
Managing drug-risk information--what to do with all those new numbers. N Engl J Med (2009) 1.49
Risk of osteoporotic fracture in a large population-based cohort of patients with rheumatoid arthritis. Arthritis Res Ther (2010) 1.48
Sudden uncontrollable somnolence and medication use in Parkinson disease. Arch Neurol (2005) 1.48
Should patients receive secondary prevention medications for free after a myocardial infarction? An economic analysis. Health Aff (Millwood) (2007) 1.45
Validation of claims-based diagnostic and procedure codes for cardiovascular and gastrointestinal serious adverse events in a commercially-insured population. Pharmacoepidemiol Drug Saf (2010) 1.43
The validity of a rheumatoid arthritis medical records-based index of severity compared with the DAS28. Arthritis Res Ther (2006) 1.43
The effect of transitioning to medicare part d drug coverage in seniors dually eligible for medicare and medicaid. J Am Geriatr Soc (2008) 1.41
Effect of aprotinin on renal dysfunction. Lancet (2008) 1.39
Safety and effectiveness of dabigatran and warfarin in routine care of patients with atrial fibrillation. Thromb Haemost (2015) 1.35
Role of disease risk scores in comparative effectiveness research with emerging therapies. Pharmacoepidemiol Drug Saf (2012) 1.32
Risk of death and hospital admission for major medical events after initiation of psychotropic medications in older adults admitted to nursing homes. CMAJ (2011) 1.26
Changes in drug utilization during a gap in insurance coverage: an examination of the medicare Part D coverage gap. PLoS Med (2011) 1.26
Identification of hospitalizations for intentional self-harm when E-codes are incompletely recorded. Pharmacoepidemiol Drug Saf (2010) 1.26
Privacy-maintaining propensity score-based pooling of multiple databases applied to a study of biologics. Med Care (2010) 1.25
Changes in drug use and out-of-pocket costs associated with Medicare Part D implementation: a systematic review. J Am Geriatr Soc (2010) 1.22
Performance of a rheumatoid arthritis records-based index of severity. J Rheumatol (2005) 1.22
Evaluating the validity of an instrumental variable study of neuroleptics: can between-physician differences in prescribing patterns be used to estimate treatment effects? Med Care (2007) 1.21
Risk of diabetes among patients with rheumatoid arthritis, psoriatic arthritis and psoriasis. Ann Rheum Dis (2010) 1.21
Availability of comparative efficacy data at the time of drug approval in the United States. JAMA (2011) 1.21
Explained variation in a model of therapeutic decision making is partitioned across patient, physician, and clinic factors. J Clin Epidemiol (2005) 1.20
Bone mineral density in subjects using central nervous system-active medications. Am J Med (2005) 1.19
The risk of infection associated with tumor necrosis factor alpha antagonists: making sense of epidemiologic evidence. Arthritis Rheum (2008) 1.18
Measuring prescribing improvements in pragmatic trials of educational tools for general practitioners. Basic Clin Pharmacol Toxicol (2006) 1.16
Oral bisphosphonates and risk of subtrochanteric or diaphyseal femur fractures in a population-based cohort. J Bone Miner Res (2011) 1.16
Designed delays versus rigorous pragmatic trials: lower carat gold standards can produce relevant drug evaluations. Med Care (2007) 1.14
Studies with many covariates and few outcomes: selecting covariates and implementing propensity-score-based confounding adjustments. Epidemiology (2014) 1.11
Tumor necrosis factor-alpha antagonist use and heart failure in elderly patients with rheumatoid arthritis. Am Heart J (2008) 1.10
Maximum potential benefit of implantable defibrillators in preventing sudden death after hospital admission because of heart failure. CMAJ (2009) 1.10
Multivariate-adjusted pharmacoepidemiologic analyses of confidential information pooled from multiple health care utilization databases. Pharmacoepidemiol Drug Saf (2010) 1.10
Using high-dimensional propensity scores to automate confounding control in a distributed medical product safety surveillance system. Pharmacoepidemiol Drug Saf (2012) 1.09
Development of a health care utilisation data-based index for rheumatoid arthritis severity: a preliminary study. Arthritis Res Ther (2008) 1.08
Comment on 'empirical assessment of methods for risk identification in healthcare data: results from the experiments of the Observational Medical Outcomes Partnership'. Stat Med (2013) 1.07
Completeness of retail pharmacy claims data: implications for pharmacoepidemiologic studies and pharmacy practice in elderly patients. Clin Ther (2009) 1.05
Suboptimal antidepressant use in the elderly. J Clin Psychopharmacol (2005) 1.05
Design considerations in an active medical product safety monitoring system. Pharmacoepidemiol Drug Saf (2012) 1.03
Implications of M bias in epidemiologic studies: a simulation study. Am J Epidemiol (2012) 1.01
Metrics for covariate balance in cohort studies of causal effects. Stat Med (2013) 1.00
Joint replacement surgeries among medicare beneficiaries in rural compared with urban areas. Arthritis Rheum (2009) 1.00
The effect of altitude on dosing and response to erythropoietin in ESRD. J Am Soc Nephrol (2008) 1.00