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Social Sciences and Humanities

D-Index
50
Citations
10164
World Ranking
2764
National Ranking
1339

Overview

Andrew M. Ryan is affiliated with the University of Michigan-Ann Arbor in the United States. Their research spans multiple fields primarily focused on healthcare policy, economics, and clinical outcomes.

Their main fields of study include:

  • Economics, Econometrics and Finance
  • Health Professions
  • Medicine

Their subfields of study highlight a focus on:

  • Economics and Econometrics
  • General Health Professions
  • Surgery
  • Pulmonary and Respiratory Medicine
  • Emergency Medicine

Key research topics covered in their work include:

  • Healthcare Policy and Management
  • Primary Care and Health Outcomes
  • Health Systems, Economic Evaluations, Quality of Life
  • Patient Satisfaction in Healthcare
  • Global Health Care Issues
  • Bariatric Surgery and Outcomes
  • Healthcare cost, quality, practices

Frequent publication venues where they have contributed include:

  • Health Affairs
  • JAMA Health Forum
  • JAMA
  • Annals of Surgery
  • Health Services Research

Frequent coauthors in their research collaborations are:

  • Justin B. Dimick
  • Karan R. Chhabra
  • David J. Meyers
  • John M. Hollingsworth
  • Grace F. Chao

Selected recent papers authored or coauthored by Andrew M. Ryan include:

  • Use of Telehealth by Surgical Specialties During the COVID-19 Pandemic, 2021, JAMA Surgery
  • Comparative Safety of Sleeve Gastrectomy and Gastric Bypass Up to 5 Years After Surgery in Patients With Severe Obesity, 2021, JAMA Surgery
  • Out-of-Network Bills for Privately Insured Patients Undergoing Elective Surgery With In-Network Primary Surgeons and Facilities, 2020, JAMA
  • Access to Mechanical Thrombectomy for Ischemic Stroke in the United States, 2021, Stroke
  • Predicting 30-day hospital readmissions using artificial neural networks with medical code embedding, 2020, PLoS ONE

Best Publications

  • Methods for evaluating changes in health care policy: the difference-in-differences approach.

    Justin B. Dimick;Andrew M. Ryan

  • Self-Reported Discrimination and Mental Health Status Among African Descendants, Mexican Americans, and Other Latinos in the New Hampshire REACH 2010 Initiative: The Added Dimension of Immigration

    Gilbert C. Gee;Andrew Ryan;David J. Laflamme;Jeanie Holt

  • Why We Should Not Be Indifferent to Specification Choices for Difference-in-Differences.

    Andrew M. Ryan;James F. Burgess;M.P.H. Justin B. Dimick M.D.

  • Association of hospital participation in a quality reporting program with surgical outcomes and expenditures for Medicare beneficiaries.

    Nicholas H. Osborne;Lauren H. Nicholas;Andrew M. Ryan;Jyothi R. Thumma

  • Sensitivity of transvaginal ultrasound screening for endometrial cancer in postmenopausal women: a case-control study within the UKCTOCS cohort

    Ian Jacobs;Aleksandra Gentry-Maharaj;Matthew Burnell;Ranjit Manchanda

  • Association of caesarean delivery with child adiposity from age 6 weeks to 15 years.

    Jan Blustein;Teresa Attina;Mengling Liu;Andrew M. Ryan

  • Bariatric Surgery Complications Before vs After Implementation of a National Policy Restricting Coverage to Centers of Excellence

    Justin B. Dimick;Lauren H. Nicholas;Andrew M. Ryan;Jyothi R. Thumma

  • The Association between Self-Reported Discrimination, Physical Health and Blood Pressure: Findings from African Americans, Black Immigrants, and Latino Immigrants in New Hampshire

    Andrew M. Ryan;Gilbert C. Gee;David F. Laflamme

  • Current State of Value-Based Purchasing Programs

    Tingyin T. Chee;Andrew M. Ryan;Jason H. Wasfy;William B. Borden

  • Long-term evidence for the effect of pay-for-performance in primary care on mortality in the UK: a population study

    Andrew Ryan;Sam Krinsky;Evangelos Kontopantelis;Evangelos Kontopantelis;Timothy Doran

  • Effects of the Premier Hospital Quality Incentive Demonstration on Medicare patient mortality and cost.

    Andrew M. Ryan

  • Changes in Hospital Quality Associated with Hospital Value-Based Purchasing

    Andrew M. Ryan;Sam Krinsky;Kristin A. Maurer;Justin B. Dimick

  • Association of Coded Severity With Readmission Reduction After the Hospital Readmissions Reduction Program.

    Andrew M. Ibrahim;Justin B. Dimick;Shashank S. Sinha;John M. Hollingsworth

  • Use of Telehealth by Surgical Specialties during the COVID-19 Pandemic

    Grace F. Chao;Kathleen Y. Li;Ziwei Zhu;Jeff McCullough

  • Association of intensive care unit admission with mortality among older patients with pneumonia

    Thomas S Valley;Michael W Sjoding;Andrew M Ryan;Theodore John Iwashyna

  • Now trending: Coping with non-parallel trends in difference-in-differences analysis:

    Andrew M Ryan;Evangelos Kontopantelis;Ariel Linden;James F Burgess

  • Estimating causal effects for multivalued treatments: A comparison of approaches

    Ariel Linden;S. Derya Uysal;Andrew Ryan;John L. Adams

  • Medicare’s Public Reporting Initiative On Hospital Quality Had Modest Or No Impact On Mortality From Three Key Conditions

    Andrew M. Ryan;Brahmajee K. Nallamothu;Justin B. Dimick

  • Small Primary Care Physician Practices Have Low Rates Of Preventable Hospital Admissions

    Lawrence P. Casalino;Michael F. Pesko;Andrew M. Ryan;Jayme L. Mendelsohn

  • Prevalence, frequency and problem rating of hot flushes persist in older postmenopausal women: impact of age, body mass index, hysterectomy, hormone therapy use, lifestyle and mood in a cross‐sectional cohort study of 10 418 British women aged 54–65

    Hunter;A Gentry-Maharaj;A Ryan;M Burnell

  • Vertical Integration of Hospitals and Physicians: Economic Theory and Empirical Evidence on Spending and Quality.

    Brady Post;Tom Buchmueller;Andrew M. Ryan

  • The Early Effects of Medicare's Mandatory Hospital Pay-for-Performance Program

    Andrew M. Ryan;James F. Burgess;Michael F. Pesko;M.P.H. William B. Borden M.D.

  • Impact of Provider Incentives on Quality and Value of Health Care

    Timothy Doran;Kristin A Maurer;Andrew M Ryan

Frequent Co-Authors

Edward C. Norton
Edward C. Norton University of Michigan–Ann Arbor
Julia Adler-Milstein
Julia Adler-Milstein University of California, San Francisco
Lesley Fallowfield
Lesley Fallowfield University of Sussex
Stephen M. Shortell
Stephen M. Shortell University of California, Berkeley
James F. Burgess
James F. Burgess Boston University
Alistair McGuire
Alistair McGuire London School of Economics and Political Science
Gilbert C. Gee
Gilbert C. Gee University of California, Los Angeles
David E. Oram
David E. Oram University of East Anglia
Harm W.J. van Marwijk
Harm W.J. van Marwijk Brighton and Sussex Medical School
James Moody
James Moody Duke University

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