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Factors associated with waiting time to breast cancer diagnosis among symptomatic breast cancer patients: a population-based study from Ontario, Canada

Abstract Purpose A prolonged time from first presentation to cancer diagnosis has been associated with worse disease-related outcomes. This study evaluated potential determinants of a […]

Assessment of the Adjusted Clinical Groups system in Dutch primary care using electronic health records: a retrospective cross-sectional study

Abstract Background Within the Dutch health care system the focus is shifting from a disease oriented approach to a more population based approach. Since every […]

Association of perioperative red blood cell transfusions with all-cause and cancer-specific death in patients undergoing surgery for gastrointestinal cancer: Long-term outcomes from a population-based cohort

Abstract Background Red blood cell transfusions are common in patients undergoing gastrointestinal cancer surgery. Yet, to adequately balance their risks and benefits, clinicians must understand […]

Incidence of Access to Ambulatory Mental Health Care Prior to a Psychiatric Emergency Department Visit Among Adults in Ontario, 2010-2018

Abstract Importance Psychiatric emergency department (ED) visits may be avoidable if individuals have access to adequate outpatient care, but the extent to which individuals use […]

Healthcare utilization in patients with higher-risk MDS/low-blast count AML treated with azacitidine in the ‘real-world’

Abstract Background Despite the adoption of azacitidine (AZA) in higher-risk MDS/low-blast count AML, limited ‘real-world’ data on resource utilization and toxicity exist. Methods We linked […]

Association between Dysphagia and Surgical Outcomes across the Continuum of Frailty

Abstract Objective This study examined the relationship between dysphagia and adverse outcomes across frailty conditions among surgical patients ≥50 years of age. Methods A retrospective cohort […]

Allopurinol adherence, persistence and patterns of use in individuals with diabetes and gout: A retrospective, population-based cohort analysis

Abstract Objective There has been growing interest in the potential role for allopurinol to reduce cardiovascular events in people with diabetes. While adherence to allopurinol is poor […]

Multimorbidity Patterns in the General Population: Results from the EpiChron Cohort Study

Abstract Objective The correct management of patients with multimorbidity remains one of the main challenges for healthcare systems worldwide. In this study, we analyze the […]

Assessing the Value of Unsupervised Clustering in Predicting Persistent High Health Care Utilizers: Retrospective Analysis of Insurance Claims Data

Abstract Background A high proportion of health care services are persistently utilized by a small subpopulation of patients. To improve clinical outcomes while reducing costs […]

Impact of a high-risk multimorbidity integrated care implemented at the public health system in Chile

Abstract During recent years, multimorbidity has taken relevance because of the impact of causes in the system, people, and their families, which has been a […]

A bias evaluation checklist for predictive models and its pilot application for 30-day hospital readmission models

Abstract Objective Health care providers increasingly rely upon predictive algorithms when making important treatment decisions, however, evidence indicates that these tools can lead to inequitable […]

Latent Class Analysis of Social Needs in Medicaid Population and Its Impact on Risk Adjustment Models

Abstract Background: A growing number of US states are implementing programs to address the social needs (SNs) of their Medicaid populations through managed care contracts. […]

Differences in use of telemedicine integrated into traditional primary health care – a comparative observational study

Abstract Telemedicine in primary health care is expected to address many of the issues currently challenging service delivery. However, the impact and effect will depend […]

Prevalence and predictors of potentially inappropriate prescribing using codified STOPP-START and Beers criteria: a retrospective cohort study in Ontario’s older population

Abstract Objectives To quantify potentially inappropriate prescribing (PIP) and assess the association between patient characteristics and PIP using previously coded STOPP-START and Beers criteria in […]

Patterns of Telehealth Use Across the Cancer Care Continuum and Assessment of Patient and Geographic Factors Associated With Key Healthcare Outcomes: Retrospective Study

Abstract Background: Although the use of telehealth has declined since the pandemic, it remains a popular mode of care delivery across the cancer care continuum. […]

COVID-19 immunisation among individuals with opioid use disorder in Ontario: a population-based cohort study

Abstract Background The COVID-19 pandemic exacerbated health inequities, particularly among individuals with opioid use disorder (OUD). Disparities in vaccine uptake among people with OUD remain […]

Association between COVID-19 vaccination and sudden death in apparently healthy younger individuals: A population-based case-control study

Abstract Background COVID-19 vaccines can cause rare but serious adverse events such as myocarditis and immune thrombocytopenia. Despite a lack of strong evidence, concerns have […]

Opioid Use During Pregnancy among Individuals with Disabilities

ABSTRACT Introduction To investigate (1) prevalence and time trends in opioid use during pregnancy and (2) patterns of opioid use before and during pregnancy, among […]

Clinical and sociodemographic characteristics of limited and persistent uveitis cases: a population-based study

Abstract Objective To compare the clinical and sociodemographic characteristics of limited and persistent uveitis cases and temporal trends in incidence in Ontario. Methods A retrospective […]

Abstract Introduction: We aimed to compare the effectiveness of methadone and sublingual buprenorphine/naloxone and their association with treatment discontinuation using real-world data from Ontario, Canada. […]

Multimorbidity and Hospital Admissions in High-Need, High-Cost Elderly Patients

Abstract Objective: The aim was to clarify which pairs or clusters of diseases predict the hospital-related events and death in a population of patients with complex […]

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Predictive Modeling Part II

This webinar is a follow up to the previous Predictive Modeling Part I webinar, which provides an overview of the predictive models available within in the […]

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Population Segmentation

Presented by: Sarah Kachur
Director, Population Health R&D, JHHC Business Lead, Pop. Health Precision Medicine

This webinar explores how applying risk taxonomy to a Medicare Advantage population helped a health plan improve their identification of high-risk members.

Sitagliptin use in patients with diabetes and heart failure: a population-based retrospective cohort study

JACC Heart Fail. University of Alberta, Edmonton, AB, Canada OBJECTIVES: The study objective was to evaluate the effects of sitagliptin in patients with type 2 […]

The roles of primary care PAs and NPs caring for older adults with diabetes

JAAPA 27:45-49. Duke University School of Medicine, Durham, NC; VetUnerans Affairs Pittsburgh Healthcare System and University of Pittsburgh School of Pharmacy, Pittsburgh, PA; University of […]

Is use of fall risk-increasing drugs in an elderly population associated with an increased risk of hip fracture, after adjustment for multimorbidity level: a cohort study

BMC Geriatr 14:131. Department of Patient Safety, Blekinge County Council, Karlskrona, Sweden BACKGROUND: Risk factors for hip fracture are well studied because of the negative […]

How do immigrants use primary health care services? A register-based study in Norway

Eur J Public Health 25:72-78. University of Bergen, Norway; Carlos III Health Institute, Madrid, Spain; Aragón Health Sciences Institute (IACS), Zaragoza, Spain; University of Zaragoza, […]

Applying a risk-adjustment framework to primary care: can we improve on existing measures?

Ann Fam Med 1:44-51. Center for Health Quality, Outcomes and Economic Research, VAMC, Bedford, MA, USA Outcome-based performance measurement and prospective payment are common features […]

Analysis of the influence of the process of care in primary health care on avoidable hospitalizations for heart failure

Aten Primaria 48:102-109. Published in Spanish. Hospital Universitario Infanta Sofía, Madrid, España; Unidad Docente Multiprofesional de Atención Familiar y Comunitaria; Madrid, España; Unidad Sistemas de […]

Multimorbidity and its patterns according to immigrant origin. A nationwide register-based study in Norway

PLoS One 10:e0145233. University of Bergen, Bergen, Norway; Norwegian Centre for Minority Health Research, Oslo, Norway; Aragón Health Sciences Institute (IACS), Zaragoza, Spain; Carlos III […]

Impact of language barriers on complications and mortality among immigrants with diabetes: a population-based cohort study

Diabetes Care 38:189-196. University Health Network, Toronto, ON, Canada; Mount Sinai Hospital, Toronto, ON, Canada; Institute for Clinical Evaluative Sciences, Toronto, ON, Canada; St. Michael’s […]

Association between age, gender and multimorbidity level and receiving home health care: a population-based Swedish study

BMC Res Notes 8:714. Lyckeby Primary Healthcare Centre and Blekinge Centre of Competence, Lyckeby, Sweden; University of Southern Denmark, Odense, Denmark BACKGROUND: Home health care […]

Comparing accuracy of risk-adjustment methodologies used in economic profiling of physicians

Inquiry 41:218-231. Department of Health Management and Policy, School of Public Health, University of Michigan, USA This paper examines the relative accuracy of risk-adjustment methodologies […]

Use of a shared medical record with secure messaging by older patients with diabetes

Diabetes Care 33:2314-2319. Department of Medicine, University of Washington, Seattle, WA, USA OBJECTIVE: Evaluate use of a web-based shared medical record (SMR) between older patients […]

Do we need more physicians?

Health Aff W4:67-69. Center for the Evaluative Clinical Sciences, Dartmouth Medical School, Hanover, NH, USA A reexamination of physician productivity can resolve the current workforce […]

Impact of discontinuity in health insurance on resource utilization

BMC Health Serv Res 10:195. Division of Health Care Policy & Research, Mayo Clinic, Rochester, MN, US BACKGROUND: This study sought to describe the incidence […]

Comparing apples with apples in clinical populations: applications of the Adjusted Clinical Group system in British Columbia

Healthc Manage Forum 15:11-16. Department of Healthcare and Epidemiology, University of British Columbia, Vancouver, BC, Canada This article reviews the Adjusted Clinical Group Case-Mix System […]

An in-depth assessment of a diagnosis-based risk adjustment model based on national health insurance claims: the application of the Johns Hopkins Adjusted Clinical Group case-mix system in Taiwan

BMC Med 8:7. Department of Health Policy & Management, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD, USA BACKGROUND: Diagnosis-based risk adjustment is […]

Predicting healthcare costs in a population of Veterans Affairs beneficiaries using diagnosis-based risk adjustment and self-reported health status

Med Care 42:1027-1035. Houston Center for Quality of Care and Utilization Studies, Health Services Research and Development Service, Michael E. DeBakey Veterans Affairs Medical Center, […]

Evaluation of guideline-concordant care for bipolar disorder among privately insured youth

Prim Care Companion J Clin Psychiatry 12:PCC.09m00837. Health Services Research Department, Institute of Psychiatry, King’s College London, London, UK OBJECTIVE: To describe and quantify the […]

Applying population-based case mix adjustment in managed care: the Johns Hopkins Ambulatory Care Group system

Manag Care Q 2:21-34. CSC Healthcare Systems, Inc., Malden, MA, USA When analyzing medical utilization or other health care-related measurements across provider panels, case mix […]

In search of the perfect comorbidity measure for use with administrative claims data: does it exist?

Med Care 44:745-753. Department of Family Medicine, University of Washington, Seattle, WA, USA BACKGROUND: Numerous measures of comorbidity have been developed for health services research […]

The development of Ambulatory Care Groups in primary care

Rev Neurol 29:667-669. Published in Spanish. Fundació Jordi Gol i Gurina, Barcelona, España INTRODUCTION: Ambulatory care groups (ACG) are a system of classification for patients […]

Comparison of private for-profit with private community-governed not-for-profit primary care services in New Zealand

J Health Serv Res Policy 9 Suppl 2:17-22. Department of Public Health, Wellington School of Medicine and Health Sciences, Wellington, New Zealand OBJECTIVE: To compare […]

Costs vs quality in different types of primary care settings

JAMA 272:1903-1908. Department of Health Policy and Management, School of Hygiene and Public Health, Johns Hopkins University, Baltimore, MD, USA OBJECTIVE: To determine the relationship […]

The validity of claims-based risk estimation in underinsured populations

Am J Manag Care 18:e468-e476. Institute for Health and Disability Policy Studies, University of Kansas, Lawrence, KS OBJECTIVES: To demonstrate a threat to validity in […]

The post-fracture care gap among Canadian First Nations peoples: a retrospective cohort study

Osteoporos Int 23:929-936. Department of Medicine, University of Manitoba, 409 Tache Avenue, Winnipeg, MB, Canada Despite targeted attempts to reduce post-fracture care gaps, we hypothesized […]

Taking health status into account when setting capitation rates: a comparison of risk-adjustment methods

JAMA 276:1316-1321. Health Research Center, Institute for Research and Education, HealthSystem Minnesota, Minneapolis, MN, USA OBJECTIVE: To compare performance of different health status measures for […]

Cardiology workforce: a shortage, not a surplus

Health Aff W4:64-66. Mayo Clinic College of Medicine, Rochester, MN, USA The United States faces a serious shortage of cardiologists as our population ages and […]

Adjusted Clinical Groups use as a measure of the referrals efficiency from primary care to specialized in Spain

Eur J Public Health 17:657-663. Planning Management, Badalona Serveis Assistencials, SA, Badalona, Barcelona, Spain BACKGROUND: To determine the referral rate (RR) per centre, its main […]

Medicaid managed care payment rates in 1998

Health Aff 18:217-227. Urban Institute, Washington, DC, USA This paper reports on a new survey of state Medicaid managed care payment rates. We collected rate […]

Chronic care improvement in primary care: evaluation of an integrated pay-for-performance and practice-based care coordination program among elderly patients with diabetes

Health Serv Res 45:1763-1782. Department of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, Johns Hopkins Healthcare LLC, Glen Burnie, MD, USA OBJECTIVE: […]

Implementation of electronic medical records: effect on the provision of preventive services in a pay-for-performance environment

Can Fam Physician 57:e381-e389. Department of Family and Community Medicine, University of Toronto, ON, Canada OBJECTIVE: To study the effect of electronic medical record (EMR) […]

Estimation of chronic co-morbidity on health costs in elderly patients with neurological disorders

Rev Peru Med Exp Salud Publica 28:564-565. Published in Spanish. Directorate of Planning, Badalona Serveis Assistencials SA, Badalona, Spain Sr. Editor. El envejecimiento progresivo de […]

Medical care costs associated with traumatic brain injury over the full spectrum of disease: a controlled population-based study

J Neurotrauma 29:2038-2049. Mayo Clinic, Rochester, MN, USA Data on traumatic brain injury (TBI) economic outcomes are limited. We used Rochester Epidemiology Project (REP) resources […]

The performance of administrative and self-reported measures for risk adjustment of Veterans Affairs expenditures

Health Serv Res 40:887-904. Health Services Research and Development Northwest Center of Excellence, Veterans Affairs Puget Sound Health Care System, Seattle, WA, USA. OBJECTIVE: To […]

Socio-economic position and childhood multimorbidity: a study using linkage between the Avon Longitudinal study of parents and children and the general practice research database

Int J Equity Health 12:66. School of Social and Community Medicine, University of Bristol, Bristol, UK INTRODUCTION: In adults, multimorbidity is associated with social position. […]

Use of risk adjustment in setting budgets and measuring performance in primary care II: advantages, disadvantages, and practicalities

BMJ 323:607-610. School of Public Policy, University College London, London, UK Risk adjustment could help to improve decisions about budgets as well as help measure […]

Prevalence of multimorbidity according to the deprivation level among the elderly in the Basque Country

BMC Public Health 13:918. Oberri, Basque Institute for Healthcare Innovation, Sondika, Spain BACKGROUND: Multimorbidity is clearly a major challenge for healthcare systems. However, currently, its […]

Predictors of colorectal cancer screening variation among primary-care providers and clinics

Am J Gastroenterol 108:1159-1167. University of Wisconsin School of Medicine and Public Health, Madison, WI, USA OBJECTIVES: Colorectal cancer (CRC) screening is underutilized. To effect […]

Antihypertensive medication initiation among young adults with regular primary care use

J Gen Intern Med Department of Medicine, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA BACKGROUND: Young adults with hypertension have […]

Systemwide provider performance in a Medicaid program. Profiling the care of patients with chronic illnesses

Med Care 34:798-810. Department of Health Policy and Management, Johns Hopkins University School of Public Health, Baltimore, MD, USA OBJECTIVES: This study illustrates how claims […]

Obesity and co-morbidities in type 2 diabetes: an opportunity to bend the Health Care Cost Curve

Rev Clin Esp 214:140-142. University of Southern Denmark, Odense, Denmark Obesity has long been known as a driver and predictor of the increasing global prevalence […]

Using a health information exchange system for imaging information: patterns and predictors

AMIA Annu Symp Proc 2013:1402-1411. Weill Cornell Medical College, New York, NY, USA Health information exchange (HIE) systems may address the challenges that prevent easy […]

Children and youth with traumatic brain injury: Who uses homecare services, what do they use, and how much does it cost?

First International Conference on Pediatric Acquired Brain Injury, September 2015, Liverpool, UK. University of Toronto, Toronto, ON, Canada Objective: To determine, by sex, the predictors, […]

Women are less likely to be admitted for inpatient rehabilitation after hypoxic-ischemic brain injury

Arch Phys Med Rehabil 96:e17-e18. Toronto Rehabilitation Institute, Toronto, ON, Canada Objective(s): To investigate demographic and acute care clinical determinants  of admission to inpatient rehabilitation […]

Child health and young adult outcomes

J Hum Resources 45:517-548. Columbia University, New York, NY, USA; University of Toronto, Toronto, ON, Canada; University of Manitoba, Winnipeg, MB, Canada Research has shown […]

Patients gain information and skills to improve self-management through innovative tools

Quality Matters December 2010/January 2011. Commonwealth Fund, New York, NY, USA Health reform strategies such as creating patient-centered medical homes depend on an actively engaged […]

What works? A first look at evaluating Manitoba’s regional health programs and policies at the population level

Winnipeg, MB, Canada: Manitoba Centre for Health Policy. Manitoba Centre for Health Policy, University of Manitoba, Winnipeg, MB, Canada Although many descriptive healthcare studies are […]

The New Mexico primary care network

Chapter 5. In: Gavin NI, Farrelly MC, ed. Evaluation of Medicaid managed care programs with 1915(b) waivers. Presented to HCFA Office of R&D. Rockville, MD, […]

Johns Hopkins risk tool used in south

EHI ehealth Insider :5 March 2012. More than 200 GP practices in South Central England are getting quarterly risk stratification and predictive modelling information on […]

Health system use by frail Ontario seniors: an in-depth examination of four vulnerable cohorts

Toronto, ON, Canada: Institute for Clinical Evaluative Sciences. Institute for Clinical Evaluative Sciences, Toronto, ON, Canada Key Findings OLDER WOMEN: A look at gender differences […]

Predicting elderly at risk of increased future healthcare use: how much does diagnostic information add to prior utilization?

Health Serv Outcomes Res Methodology 3:266-277. Adamian Academic Center, Bentley College, Waltham, MA, USA; Center for Health Quality, Outcomes and Economic Research, Veterans Administration Medical […]

Hopkins health pricing tool a managed care hit

Hopkins health pricing tool a managed care hit. Baltimore Business Journal July 21. Baltimore Business Journal, Baltimore, MD, USA Johns Hopkins University’s links with private […]

Event analysis of all-cause and ambulatory care sensitive hospitalization of long-stay nursing home residents

Baltimore, MD, USA: Centers for Medicare and Medicaid Services. Schneider Institutes for Health Policy, The Heller School for Social Policy and Management, Brandeis University, Waltham, […]

Adult obesity in Manitoba: prevalence, associations, and outcomes, 3rd edition

Winnipeg, MB, Canada: Manitoba Centre for Health Policy. Manitoba Centre for Health Policy, Winnipeg, MB, Canada Obesity is a major public health concern in Canada […]

Healthcare expenditure in the last year of life: the experience of South African medical schemes

Cape Town, South Africa: Actuarial Society of South Africa. School of Management Studies, University of Cape Town, Rondebosch, South Africa The aim of this paper […]

Pressupostos e proposta de modelo para a remuneração do trabalho do médico cirurgião nas operadoras de planos de saúde

São Paulo, Brazil: Fundação Getúlio Vargas, Escola de Administração de Empresas de São Paulo (doctoral dissertation). Published in Portuguese. Fundação Getúlio Vargas, Escola de Administração […]

A predictive model to identify patients at risk of unplanned 30-day acute care hospital readmission

In: 2013 IEEE International Conference on Healthcare Informatics, September 9-11, 2013, Philadelphia, PA, USA. Los Alamitos, CA, USA: IEEE:551-556. Department of Health Policy and Management, […]

Central Midlands CSU Case Study

Midlands and Lancashire CSU – ACG® System Case Management Report

Population Health and Resource Allocation Case Study Payer

Slough CCG used data output from the Johns Hopkins ACG System to gain a better understanding of their patient population, understand the factors that drive […]

Population Health Management: A Focus On Analytics Using ACGs

Johns Hopkins HealthCare LLC   Population Health Management: A Focus On Analytics Using ACGs Martha Sylvia, PhD, MBA, RN

Monday(C2)-The Association between Patient Sharing among Physicians and Cost of Care-Lemke

The Association between Patient Sharing among Physicians and Cost of Care-Klaus Lemke

Tuesday(C6)-Do Real Time Clinical Measures Improve the Performance of ACG Based Predictive Models?-Fishman

Do Real Time Clinical Measures Improve the Performance of ACG Based Predictive Models? Paul Fishman, PhD  Robert Reid, MD, PhD 

AcademyHealth 2015 HSR Impact Awardee Summary description of the ACG System

2015 HSR Impact Awardee The Johns Hopkins ACG Case-Mix System

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The ACG System and Care Management

Linda Dunbar, Vice President of Population Health Care Management at Johns Hopkins HealthCare discusses how the ACG System assisted with Care Management for high-risk individuals […]

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Resource Allocation Case Study-Government

The Ministry of Health in Chile used the ACG® System as a risk-adjustment mechanism to improve health care resource allocation and better describe the disease […]

Apples and Oranges: Four Definitions of Multiple Chronic Conditions and their Relationship to 30-Day Hospital Readmission

OBJECTIVES: To determine the extent of agreement between four commonly used definitions of multiple chronic conditions (MCCs) and compare each definition’s ability to predict 30-day […]

Are we making a difference in primary care for adults with intellectual and developmental disabilities?

Abstract Objectives. To examine the impact of the dissemination of guidelines to physicians and of a population-level health communication intervention on the percentage of adults […]

Supplement to “Equilibria in Health Exchanges: Adverse Selection versus Reclassification Risk”

This online appendix has three sections.  The first presents details of the choice model estimation algorithm, as well as additional estimates from our primary specification […]

Repeat Emergency Department Visits for Individuals With Intellectual and Developmental Disabilities and Psychiatric Disorders

Abstract Although individuals with intellectual and developmental disabilities (IDD) and psychiatric concerns are more likely than others to visit hospital emergency departments (EDs), the frequency […]

Integrating Social and Behavioral Determinants of Health into Population Health Analytics: A Conceptual Framework and Suggested Road Map

Abstract There is growing recognition that social and behavioral risk factors impact population health outcomes. Interventions that target these risk factors can improve health outcomes. […]

Frailty, Implantable Cardioverter Defibrillators, and Mortality: a Systematic Review

Abstract   Background Evidence for the benefit of implantable cardioverter defibrillators (ICD) in preventing sudden cardiac death (SCD) in older adults is mixed; age alone […]