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Arlene Ash, PhD, is Professor and Division Chief for Biostatistics and Health Services Research in the Department of Population and Quantitative Health Sciences at the University of Massachusetts Chan Medical School, and an internationally recognized methods expert in health services research. She pioneered tools for using administrative data to monitor and manage health care delivery systems, including those now used by the US Medicare program. In 1996, she co-founded DxCG, Inc. (now a part of Cotiviti) to promote “fair and efficient health care” via predictive software, and received AcademyHealth’s 2008 HSR Impact Award (“Risk-Based Predictive Modeling”). She was one of six appointees to the COPSS-CMS white paper project: “Statistical Issues in Assessing Hospital Performance.” Dr. Ash's UMass Chan team helps MassHealth incorporate social determinants of health into Medicaid/CHIP global payments. Her over 200 research publications reflect long-standing interests in gender, age, and racial disparities and quality, equity, and efficiency in health care financing and delivery.


American Statistical Association’s Committee on Scientific and Public Affairs (2003-present), Chair of its Subcommittee on Electoral Integrity (2004-2009). Founding member of two health centers, Chicago (1973-1976) Board of directors, Fenway Community Development Corporation (1981-2003) and President (1991-1994) Cofounder (1996) of DxCG, Inc., a predictive modeling health informatics company. DxCG (sold in 2004) is now the science division of Verisk Health, Inc.

Peace Corps Volunteer (1967-69). Mathematics teaching. Mindanao State U, Philippines. Frequent lecturer on Women and Mathematics; encourager of young women to become mathematicians. Author of over 150 research publications. Fellow of the American Statistical Association and AcademyHealth. Recipient of numerous awards for work in statistical methods and applied research.

Academic Background:

Ph.D. University of Illinois, Chicago IL

M.S. Washington University, St Louis, MO

B.A. Harvard University, Cambridge, MA 


Arlene Ash picture faculty web pageArlene Ash is a  Ph.D.-level mathematician who has worked in medical schools as a health services research methodologist since 1984.  Her areas of special interest and expertise include: design of experiments, building and validating models for predicting health care costs, utilization and other health outcomes in populations, comparing quality outcomes across providers, and conducting research into the causes and correlates of health disparities. She writes and lectures about a wide range of methods issues in study design, analysis and reporting, and has frequently led studies to evaluate the relative contributions to health outcomes of individual medical and social risks, medical interventions, and system-level factors.


One or more keywords matched the following items that are connected to Ash, Arlene
Item TypeName
Academic Article Rating long-term care facilities on pressure ulcer development: importance of case-mix adjustment.
Academic Article Severity measurement methods and judging hospital death rates for pneumonia.
Academic Article Judging hospitals by severity-adjusted mortality rates: the case of CABG surgery.
Academic Article Evaluating pressure ulcer occurrence in long-term care: pitfalls in interpreting administrative data.
Academic Article Black women receive less mammography even with similar use of primary care.
Academic Article Using severity measures to predict the likelihood of death for pneumonia inpatients.
Academic Article The importance of comorbidities in explaining differences in patient costs.
Academic Article Refinements to the Diagnostic Cost Group (DCG) model.
Academic Article The design and analysis of hospital utilization studies.
Academic Article Judging hospitals by severity-adjusted mortality rates: the influence of the severity-adjustment method.
Academic Article Do severity measures explain differences in length of hospital stay? The case of hip fracture.
Academic Article Underdetection of clinical benign prostatic hyperplasia in a general medical practice.
Academic Article As mammography use increases, are some providers omitting clinical breast examination?
Academic Article Outcomes for older men and women with congestive heart failure.
Academic Article Mammography use helps to explain differences in breast cancer stage at diagnosis between older black and white women.
Academic Article Problems in assessing diabetes control in an ambulatory setting.
Academic Article Reducing random variation in reported rates of pressure ulcer development.
Academic Article Profiling outcomes of ambulatory care: casemix affects perceived performance.
Academic Article Evaluation of complication rates after coronary artery bypass surgery using administrative data.
Academic Article Searching for an improved clinical comorbidity index for use with ICD-9-CM administrative data.
Academic Article Variability in mammography use among older women.
Academic Article Identifying poor-quality hospitals with mortality rates. Often there's more noise than signal.
Academic Article Relation of family responsibilities and gender to the productivity and career satisfaction of medical faculty.
Academic Article Inadequate management of blood pressure in a hypertensive population.
Academic Article Do hip replacements improve outcomes for hip fracture patients?
Academic Article Diagnosis-based risk adjustment for Medicare capitation payments.
Academic Article Variation in hospital rates of intraaortic balloon pump use in coronary artery bypass operations.
Academic Article How much better can we predict dialysis patient survival using clinical data?
Academic Article Functional status outcomes for assessment of quality in long-term care.
Academic Article Identifying pre- and postoperative predictors of cost and length of stay for coronary artery bypass surgery.
Academic Article Variations in the management of acute myocardial infarction. Importance of clinical measures of disease severity.
Academic Article Predicting in-hospital mortality. A comparison of severity measurement approaches.
Academic Article Predicting in-hospital mortality for stroke patients: results differ across severity-measurement methods.
Academic Article Faculty perceptions of gender discrimination and sexual harassment in academic medicine.
Academic Article Does diagnostic information contribute to predicting functional decline in long-term care?
Academic Article High hospital admission rates and inappropriate care.
Academic Article Self-report versus medical record functional status.
Academic Article Statewide quality improvement initiatives and mortality after cardiac surgery.
Academic Article Differences in procedure use, in-hospital mortality, and illness severity by gender for acute myocardial infarction patients: are answers affected by data source and severity measure?
Academic Article Fellowship training and career outcomes for primary care physician-faculty.
Academic Article Variations in the performance of hip fracture procedures.
Academic Article Hospital cost of complications associated with coronary artery bypass graft surgery.
Academic Article Risk selection in the Massachusetts State employee health insurance program.
Academic Article Outcomes of hypertension care. Simple measures are not that simple.
Academic Article Predicting in-hospital deaths from coronary artery bypass graft surgery. Do different severity measures give different predictions?
Academic Article Relationships of gender and career motivation to medical faculty members' production of academic publications.
Academic Article Clinical practice guidelines in the nursing home.
Academic Article Junior faculty members' mentoring relationships and their professional development in U.S. medical schools.
Academic Article Managed care, hospice use, site of death, and medical expenditures in the last year of life.
Academic Article Minority faculty and academic rank in medicine.
Academic Article Quality improvement implementation in the nursing home.
Academic Article Chemotherapy use among Medicare beneficiaries at the end of life.
Academic Article Measuring the quality of depression care in a large integrated health system.
Academic Article Comparing the importance of disease rate versus practice style variations in explaining differences in small area hospitalization rates for two respiratory conditions.
Academic Article R2: a useful measure of model performance when predicting a dichotomous outcome.
Academic Article Using claims data to examine mortality trends following hospitalization for heart attack in Medicare.
Academic Article Hypertension control: how well are we doing?
Academic Article The patient population of a major chain of investor-owned ambulatory care walk-in centers.
Academic Article Using utilization review information to improve hospital efficiency.
Academic Article Does severity explain differences in hospital length of stay for pneumonia patients?
Academic Article Does the survival advantage of nonwhite dialysis patients persist after case mix adjustment?
Academic Article Adjusting Medicare capitation payments using prior hospitalization data.
Academic Article Patterns of use of common major procedures in medical care of older adults.
Academic Article Depression management in medical clinics: does healthcare sector make a difference?
Academic Article Compensation and advancement of women in academic medicine: is there equity?
Academic Article Admission and mid-stay MedisGroups scores as predictors of hospitalization charges.
Academic Article Postoperative adverse events of common surgical procedures in the Medicare population.
Academic Article Predicting pharmacy costs and other medical costs using diagnoses and drug claims.
Academic Article Pressure ulcer development in the VA: characteristics of nursing homes providing best care.
Academic Article Survival analysis using Medicare data: example and methods.
Academic Article Intensive care unit use and mortality in the elderly.
Academic Article Specialty choices, compensation, and career satisfaction of underrepresented minority faculty in academic medicine.
Academic Article Developing a quality measure for clinical inertia in diabetes care.
Academic Article Gender differences in the treatment of cerebrovascular disease.
Academic Article Mammography use, breast cancer stage at diagnosis, and survival among older women.
Academic Article The Self-Adapting Focused Review System. Probability sampling of medical records to monitor utilization and quality of care.
Academic Article Healthcare costs and utilization for Medicare beneficiaries with Alzheimer's.
Academic Article Implications of comorbidity on costs for patients with Alzheimer disease.
Academic Article Illness severity and costs of admissions at teaching and nonteaching hospitals.
Academic Article Physician satisfaction in a major chain of investor-owned walk-in centers.
Academic Article Influence of age on Medicare expenditures and medical care in the last year of life.
Academic Article Racial and ethnic differences in end-of-life costs: why do minorities cost more than whites?
Academic Article Self-monitoring of blood glucose with finger tip versus alternative site sampling: effect on glycemic control in insulin-using patients with type 2 diabetes.
Academic Article Post-hospital medical respite care and hospital readmission of homeless persons.
Academic Article A family longevity selection score: ranking sibships by their longevity, size, and availability for study.
Academic Article Nursing home residence confounds gender differences in Medicare utilization an example of Simpson's paradox.
Academic Article Racial and ethnic differences in hospice use among patients with heart failure.
Academic Article Patient characteristics associated with oral anticoagulation control: results of the Veterans AffaiRs Study to Improve Anticoagulation (VARIA).
Academic Article Risk-adjusted percent time in therapeutic range as a quality indicator for outpatient oral anticoagulation: results of the Veterans Affairs Study to Improve Anticoagulation (VARIA).
Academic Article Measuring patients' desire for autonomy: decision making and information-seeking preferences among medical patients.
Academic Article Reexamining the recommended follow-up interval after obtaining an in-range international normalized ratio value: results from the Veterans Affairs study to improve anticoagulation.
Academic Article The business case for quality improvement: oral anticoagulation for atrial fibrillation.
Academic Article Disparities by race, ethnicity, and sex in treating acute coronary syndromes.
Academic Article Why are a quarter of faculty considering leaving academic medicine? A study of their perceptions of institutional culture and intentions to leave at 26 representative U.S. medical schools.
Academic Article Does more "appropriateness" explain higher rates of cardiac procedures among patients hospitalized with coronary heart disease?
Academic Article Profiling nursing homes using Bayesian hierarchical modeling.
Academic Article Career differences between primary care and traditional trainees in internal medicine and pediatrics.
Academic Article Hypertension management in patients with diabetes: the need for more aggressive therapy.
Academic Article Admission MedisGroups score and the cost of hospitalizations.
Academic Article Bilateral dental caries from the individual perspective: a definition and a statistical test for its existence.
Academic Article Emergency contraception: prescribing practices of general internists compared with other primary care physicians.
Academic Article Faculty self-reported experience with racial and ethnic discrimination in academic medicine.
Academic Article Predicting who dies depends on how severity is measured: implications for evaluating patient outcomes.
Academic Article Using severity-adjusted stroke mortality rates to judge hospitals.
Academic Article Postoperative adverse events of cholecystectomy in the Medicare population.
Academic Article An integer programming model to limit hospital selection in studies with repeated sampling.
Academic Article Small area variations in hospitalization rates: how much you see depends on how you look.
Academic Article Predicting the occurrence of adverse events after coronary artery bypass surgery.
Academic Article MedisGroups data bases. The impact of data collection guidelines on predicting in-hospital mortality.
Academic Article Who gets repeat screening mammography: the role of the physician.
Academic Article Place of death: U.S. trends since 1980.
Academic Article Monitoring depression care: in search of an accurate quality indicator.
Academic Article Can we use automated data to assess quality of hypertension care?
Academic Article Risk adjustment of Medicare capitation payments using the CMS-HCC model.
Academic Article Identifying hypertension-related comorbidities from administrative data: what's the optimal approach?
Academic Article The relationship of system-level quality improvement with quality of depression care.
Academic Article Do variations in disease prevalence limit the usefulness of population-based hospitalization rates for studying variations in hospital admissions?
Academic Article Effect of patient gender on late-life depression management.
Academic Article Admission and mid-stay MedisGroups scores as predictors of death within 30 days of hospital admission.
Academic Article Measuring population health risks using inpatient diagnoses and outpatient pharmacy data.
Academic Article Finding future high-cost cases: comparing prior cost versus diagnosis-based methods.
Academic Article Cancer prevention trials and primary care physicians: factors associated with recommending trial enrollment.
Academic Article Predictors of aggressive therapy for nonmetastatic prostate carcinoma in Massachusetts from 1998 to 2002.
Academic Article Measuring quality.
Academic Article Exploring the determinants of racial and ethnic disparities in total knee arthroplasty: health insurance, income, and assets.
Academic Article Can primary care visits reduce hospital utilization among Medicare beneficiaries at the end of life?
Academic Article Using the case mix of pressure ulcer healing to evaluate nursing home performance.
Academic Article The Demographic Assessment for Health Literacy (DAHL): a new tool for estimating associations between health literacy and outcomes in national surveys.
Academic Article Predictors of timely follow-up after abnormal cancer screening among women seeking care at urban community health centers.
Academic Article Longitudinal patterns in survival, comorbidity, healthcare utilization and quality of care among older women following breast cancer diagnosis.
Academic Article Research that matters.
Academic Article Prompt repeat testing after out-of-range INR values: a quality indicator for anticoagulation care.
Academic Article Relevance of current guidelines for organizing an anticoagulation clinic.
Academic Article Social disparity and intrauterine death: from politics to policies.
Academic Article INR targets and site-level anticoagulation control: results from the Veterans AffaiRs Study to Improve Anticoagulation (VARIA).
Academic Article Risk-adjusted payment and performance assessment for primary care.
Academic Article Contraceptive insurance mandates.
Academic Article Identifying major hemorrhage with automated data: results of the Veterans Affairs study to improve anticoagulation (VARIA).
Academic Article Screening colonoscopy and risk for incident late-stage colorectal cancer diagnosis in average-risk adults: a nested case-control study.
Academic Article Using the bootstrap to establish statistical significance for relative validity comparisons among patient-reported outcome measures.
Academic Article The importance of severity of illness adjustment in predicting adverse outcomes in the Medicare population.
Academic Article Risk adjustment methods can affect perceptions of outcomes.
Concept Primary Health Care
Concept Attitude of Health Personnel
Concept Electronic Health Records
Concept Substance-Related Disorders
Concept Drug Administration Schedule
Concept Health Surveys
Concept Health Education
Concept Patient Selection
Concept Survival Rate
Concept Health Services Accessibility
Concept Data Interpretation, Statistical
Concept Health Status Indicators
Concept Software
Concept Surgical Procedures, Operative
Concept Specialty Boards
Concept Mental Health Services
Concept Self-Assessment
Concept Information Services
Concept Educational Status
Concept Health Care Sector
Concept Hospital Information Systems
Concept Schools, Medical
Concept Sex Distribution
Concept Physicians, Women
Concept Sampling Studies
Concept Comprehensive Health Care
Concept Health Services Research
Concept Social Support
Concept Systems Analysis
Concept Insurance, Health
Concept Information Systems
Concept Sensitivity and Specificity
Concept Science
Concept Health Knowledge, Attitudes, Practice
Concept Specialties, Surgical
Concept Fee-for-Service Plans
Concept Professional Staff Committees
Concept State Government
Concept Chi-Square Distribution
Concept Health Services for the Aged
Concept Statistics as Topic
Concept Specialization
Concept Patient Acceptance of Health Care
Concept Health Status
Concept Cohort Studies
Concept Stroke
Concept Attitude to Health
Concept United States Department of Veterans Affairs
Concept Health Promotion
Concept Carotid Stenosis
Concept Smoking Cessation
Concept Rate Setting and Review
Concept Research Support as Topic
Concept Health Personnel
Concept Health Facilities, Proprietary
Concept Vaginal Smears
Concept Acquired Immunodeficiency Syndrome
Concept Factor Analysis, Statistical
Concept Emergency Service, Hospital
Concept Injury Severity Score
Concept Insurance Selection Bias
Concept Sexual Harassment
Concept Quality Assurance, Health Care
Concept Self-Help Groups
Concept Serum Albumin
Concept Sexually Transmitted Diseases
Concept Retrospective Studies
Concept Health Policy
Concept Safe Sex
Concept Health Expenditures
Concept Models, Statistical
Concept Fee Schedules
Concept Fellowships and Scholarships
Concept Self Efficacy
Concept Decision Support Techniques
Concept Health Care Rationing
Concept Blood Glucose Self-Monitoring
Concept Health Services
Concept Insurance, Pharmaceutical Services
Concept Regional Health Planning
Concept Severity of Illness Index
Concept Job Satisfaction
Concept Stents
Concept Pharmacy Service, Hospital
Concept Delivery of Health Care, Integrated
Concept Longitudinal Studies
Concept Small-Area Analysis
Concept Sex
Concept Health Care Surveys
Concept Propensity Score
Concept Health Care Reform
Concept Health Care Costs
Concept Psychiatric Status Rating Scales
Concept Health Resources
Concept Survival Analysis
Concept Systole
Concept Acute Coronary Syndrome
Concept Sex Factors
Concept Health Behavior
Concept Survivors
Concept Evaluation Studies as Topic
Concept Health Benefit Plans, Employee
Concept Health Maintenance Organizations
Concept Mass Screening
Concept Quality Indicators, Health Care
Concept Case-Control Studies
Concept Monoclonal Gammopathy of Undetermined Significance
Concept Appointments and Schedules
Concept Neoplasm Staging
Concept Health Status Disparities
Concept Quality of Health Care
Concept Prospective Studies
Concept Cross-Sectional Studies
Concept Socioeconomic Factors
Concept Women's Health
Concept Social Values
Concept Sigmoidoscopy
Concept Surveys and Questionnaires
Concept Emergency Medical Services
Concept Community Health Centers
Concept Medical Staff, Hospital
Concept Length of Stay
Concept Personnel Staffing and Scheduling
Concept United States
Concept Health Services Misuse
Concept Delivery of Health Care
Concept Skilled Nursing Facilities
Concept Salaries and Fringe Benefits
Concept Follow-Up Studies
Concept Siblings
Concept SEER Program
Concept Insurance, Health, Reimbursement
Academic Article Identifying the risks of anticoagulation in patients with substance abuse.
Academic Article Bending the cost curve? Results from a comprehensive primary care payment pilot.
Academic Article Outcomes of anticoagulation therapy in patients with mental health conditions.
Academic Article Stratifying the risks of oral anticoagulation in patients with liver disease.
Academic Article Psychometric evaluation of the Care Transition Measure in TRACE-CORE: do we need a better measure?
Academic Article Composite model for profiling physicians across domains of care.
Academic Article How pooling fragmented healthcare encounter data affects hospital profiling.
Academic Article Explaining racial disparities in anticoagulation control: results from a study of patients at the Veterans Administration.
Academic Article Mispricing in the medicare advantage risk adjustment model.
Academic Article Clinical Operations Variables are Associated With Blood Pressure Outcomes.
Academic Article Recent national trends in acute myocardial infarction hospitalizations in Medicare: shrinking declines and growing disparities.
Academic Article Are Members of Long-Lived Families Healthier Than Their Equally Long-Lived Peers? Evidence From the Long Life Family Study.
Academic Article Evaluating the QUIT-PRIMO clinical practice ePortal to increase smoker engagement with online cessation interventions: a national hybrid type 2 implementation study.
Academic Article Trends in acute myocardial infarction hospitalizations: Are we seeing the whole picture?
Academic Article Reliability of Predicting Early Hospital Readmission After Discharge for an Acute Coronary Syndrome Using Claims-Based Data.
Academic Article Perceiving one's heart condition to be cured following hospitalization for acute coronary syndromes: Implications for patient-provider communication.
Academic Article Does adding clinical data to administrative data improve agreement among hospital quality measures?
Academic Article Contributions of Children With Multiple Chronic Conditions to Pediatric Hospitalizations in the United States: A Retrospective Cohort Analysis.
Academic Article Social Determinants of Health in Managed Care Payment Formulas.
Academic Article Enhancing Administrative Data to Predict Emergency Department Utilization: The Role of Neighborhood Sociodemographics.
Academic Article Inadequate diversity of information resources searched in US-affiliated systematic reviews and meta-analyses: 2005-2016.
Academic Article A collection of marginalized two-part random-effects models for analyzing medical expenditure panel data: Impact of the New Cooperative Medical Scheme on healthcare expenditures in China.
Academic Article Twenty-five year trends (1986-2011) in hospital incidence and case-fatality rates of ventricular tachycardia and ventricular fibrillation complicating acute myocardial infarction.
Academic Article Clinically significant ventricular arrhythmias and progression of depression and anxiety following an acute coronary syndrome.
Academic Article Hyperglycemia and risk of ventricular tachycardia among patients hospitalized with acute myocardial infarction.
Academic Article Emergency Department and Primary Care Use in Massachusetts 5 Years After Health Reform.
Academic Article Change in Cognitive Function in the Month After Hospitalization for Acute Coronary Syndromes: Findings From TRACE-CORE (Transition, Risks, and Actions in Coronary Events-Center for Outcomes Research and Education).
Academic Article Neighborhood Socioeconomic Status Predicts Health After Hospitalization for Acute Coronary Syndromes: Findings From TRACE-CORE (Transitions, Risks, and Actions in Coronary Events-Center for Outcomes Research and Education).
Academic Article Identifying monoclonal gammopathy of undetermined significance in electronic health data.
Academic Article Diagnostic Category Prevalence in 3 Classification Systems Across the Transition to the International Classification of Diseases, Tenth Revision, Clinical Modification.
Academic Article A cardiovascular disease risk prediction algorithm for use with the Medicare current beneficiary survey.
Academic Article Secure Messaging, Diabetes Self-management, and the Importance of Patient Autonomy: a Mixed Methods Study.
Academic Article Calibrating Medicaid payment to need for long-term services and supports.
Academic Article Adolescent HIV-related behavioural prediction using machine learning: a foundation for precision HIV prevention.
Academic Article Complex Patients Have More Emergency Visits: Don't Punish the Systems That Serve Them.
Academic Article Association of Socioeconomic Disadvantage With Long-term Mortality After Myocardial Infarction: The Mass General Brigham YOUNG-MI Registry.
Academic Article High-frequency hospital users: The tail that wags the readmissions dog.
Academic Article Patient portal engagement and diabetes management among new portal users in the Veterans Health Administration.
Academic Article Differences in Secure Messaging, Self-management, and Glycemic Control Between Rural and Urban Patients: Secondary Data Analysis.
Academic Article Association of Social Determinants of Health With Adherence to Second-generation Antipsychotics for People With Bipolar Disorders in a Medicaid Population.
Concept Health Equity
Concept Stroke Rehabilitation
Concept ST Elevation Myocardial Infarction
Concept Non-ST Elevated Myocardial Infarction
Concept Self-Management
Concept Tobacco Smoking
Concept Self Report
Concept Veterans Health
Concept Social Determinants of Health
Concept Interrupted Time Series Analysis
Academic Article Benchmarking expectations for interventions to reduce emergency department use among today's high users.
Academic Article Association of Trauma Center Designation With Postdischarge Survival Among Older Adults With Injuries.
Academic Article Predictive algorithm to stratify newborns at-risk for child undernutrition in India: Secondary analysis of the National Family Health Survey-4.
Academic Article Paper of Association of Social Determinants of Health With Adherence to Second-generation Antipsychotics for People With Bipolar Disorders in a Medicaid Population.
Academic Article Association Between the Modified Frailty Index and Outcomes Following Lobectomy.
Academic Article Development and Assessment of a New Framework for Disease Surveillance, Prediction, and Risk Adjustment: The Diagnostic Items Classification System.
Academic Article Predicting Adolescent Intervention Non-responsiveness for Precision HIV Prevention Using Machine Learning.
Academic Article Influenza Vaccinations Among Privately and Publicly Insured Children With Asthma.
Academic Article Secure Messaging for Diabetes Management: Content Analysis.
Academic Article Risk Adjustment And Health Equity.
Academic Article Paying for Medical and Social Complexity in Massachusetts Medicaid.
Academic Article Measuring The Enduring Imprint Of Structural Racism On American Neighborhoods.
Academic Article Changes in Health Care Utilization During the First 2 Years of Massachusetts Medicaid Accountable Care Organizations.
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