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The excess medical cost and health problems of family members of persons diagnosed with alcohol or drug problems

Med Care 45:116-122. Division of Research, Kaiser Permanente Northern California, Oakland, CA, USA BACKGROUND: Having a family member with substance use problems affects family functioning, […]

Is socioeconomic status associated with utilization of health care services in a single-payer universal health care system?

Int J Equity Health 13:115. Ben-Gurion University, Beer Sheva, Israel; Clalit Health Services, Tel Aviv, Israel OBJECTIVES: To assess an association of Socio-economic status with […]

Validation of 2 new measures of continuity of care based on year-to-year follow-up with known providers of health care

Ann Fam Med 12:559-567. Montreal Health and Social Services Agency, Montreal, QC, Canada PURPOSE: In a primary care context favoring group practices, we assessed the […]

The healthy migrant effect in primary care

Gac Sanit 29:15-20. Aragón Health Sciences Institute (IACS), Zaragoza, Spain; University of Zaragoza, Zaragoza, Spain; Miguel Servet University Hospital, Zaragoza, Spain; Carlos III Health Institute, […]

Medication oversupply in patients with diabetes

Res Social Adm Pharm 11:382-400. Veterans Affairs Pittsburgh Healthcare System, Pittsburgh, PA, USA; University of Pittsburgh, PA, USA; University of Wisconsin, Madison, WI, USA; Pharmacy […]

Prognostic factors in metastatic gastric cancer: results of a population-based, retrospective cohort study in Ontario

Gastric Cancer 19:150-159. Department of Surgery, Maimonides Medical Center, Brooklyn, NY, USA BACKGROUND: Stage IV gastric cancer is lethal, and little population-based research on prognostic […]

The temporal risk of heart failure associated with adjuvant trastuzumab in breast cancer patients: a population study

J Natl Cancer Inst 108:10. University of Toronto, Toronto, ON, Canada; St. Michael’s Hospital, Toronto, ON, Canada; Institute for Clinical Evaluative Sciences, Toronto, ON, Canada; […]

The origin of variation in primary care process and outcome indicators: patients, professionals, centers, and health districts

Medicine 94:e1314. Centro de Salud de Astrabudua (Primary Health Care Center of Astrabudua), Osakidetza (Basque Health Service), Erandio (Bizkaia), Spain; Primary Care Research Unit-Bizkaia, Osakidetza, […]

Characteristics of physicians and patients who join team-based primary care practices: evidence from Quebec’s Family Medicine Groups

Health Policy 116:264-272. McGill University, Montreal, QC, Canada; Direction de la santé publique de l’Agence de la Santé et des services sociaux de Montréal, Montreal, […]

Adjusted Clinical Groups Method (ACG) to allocate resources according to the disease burden of each health center

Santelices C E, Muñoz P F, Muñiz P, Rojas J. BACKGROUND: Health care must be provided with strong primary health care models, emphasizing prevention and a […]

Determining the morbidity profile, health-service utilization and health-provider efficiency in the Rejang River Basin, Sarawak, based on TPC® data and the Johns Hopkins ACG® System

BMC Health Serv Res 10:A8. Ministry of Health, Malaysia; Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA Introduction: The study focused on the […]

Validating the Johns Hopkins ACG Case-Mix System of the elderly in Swedish primary health care

BMC Public Health 6:171. Blekinge Institute for Research & Development, Karlshamn, Sweden BACKGROUND: Individual based measures for comorbidity are of increasing importance for planning and […]

Use of diagnosis-based risk adjustment models to predict individual health care expenditure under the National Health Insurance system in Taiwan

J Formos Med Assoc 104:883-890. Graduate Institute of Health Care Organization Administration, College of Public Health, National Taiwan University, Taipei, Taiwan. BACKGROUND AND PURPOSE: Diagnostic […]

Risk adjustment using administrative data-based and survey-derived methods for explaining physician utilization

Med Care 48:175-182. Institute for Clinical Evaluative Sciences, Toronto, ON, Canada OBJECTIVES: The objective of this study was to evaluate an administrative data-based risk adjustment […]

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

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 […]

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 […]

Relation between primary care physician supply and diabetes care and outcomes: a cross-sectional study

Background: Higher primary care physician supply is associated with lower mortality due to heart disease, cancer and stroke, but its relation to diabetes care and […]

Home Palliative Service Utilization and Care Trajectory Among Ontario Residents Dying on Chronic Dialysis

Background: Many patients who receive chronic hemodialysis have a limited life expectancy comparable to that of patients with metastatic cancer. However, patterns of home palliative […]

Association Between Wait Time for Transcatheter Aortic Valve Replacement and Early Postprocedural Outcomes

Abstract Background Rapid growth in transcatheter aortic valve replacement (TAVR) demand has translated to inadequate access, reflected by prolonged wait times. Increasing wait times are […]

Variation in Revascularization Practice and Outcomes in Asymptomatic Stable Ischemic Heart Disease

Abstract   Objectives The aims of this study were to assess variation in revascularization of asymptomatic patients with stable ischemic heart disease, identify the predictors of variation, and […]

Trends in Providing Out-of-Office, Urgent After-Hours, and On-Call Care in British Columbia

Abstract   PURPOSE Providing care in alternative (non-office) locations and outside office hours are important elements of access and comprehensiveness of primary care. We examined […]

Impact of Predialysis Psychosocial Conditions on Kidney Transplant Recipient Survival: Evidence Using Propensity Score Matching

Abstract Background: An increased number of end-stage renal disease patients suffer psychosocial conditions and may experience delayed access to transplantation due to listing restrictions. However, […]

Days spent at home in the last 6 months of life: a quality indicator of end of life care in patients with hematologic malignancies

Abstract Despite advances in the management of hematologic malignancies, a significant proportion of patients die of their disease. We used administrative databases in Ontario, Canada […]

Comparison of Cardiovascular Risk Factors and Outcomes Among Practicing Physicians vs the General Population in Ontario, Canada

Abstract IMPORTANCE Although cardiovascular disease is the leading cause of death in most developed countries, little is known about current physicians’ cardiovascular health and outcomes. […]

Overall mortality and causes of death in newly admitted nursing home residents

Abstract Background In spite of a rapidly ageing population, there is a lack of population-based data on mortality among nursing home residents in Southern Europe. […]

The measurement of multimorbidity.

Abstract Overview: The presence of multiple concurrent medical conditions (also known as multimorbidity) is now a common phenomenon, hence the importance of its measurement. Objective: […]

Medication use and its impact on high-cost health care users among older adults: protocol for the population-based matched cohort HiCOSTT study

Abstract Background Health interventions and policies for high-cost health care users (HCUs) who are older adults need to be informed by a better understanding of […]

Overall Health Care Cost During the Year Following Diagnosis of Colorectal Cancer Stratified by History of Colorectal Evaluative Procedures

Abstract Background The cost-effectiveness of colorectal screening has been modeled; however, the cost of health care following the diagnosis of colorectal cancer has not been […]

Association Between Switching to a High-Deductible Health Plan and Major Cardiovascular Outcomes

Abstract Objective To describe the association between enrollment in high-deductible health plans and the risk of major adverse cardiovascular outcomes. Design, Setting, and Participants This […]

Emergency department use in people who experience imprisonment in Ontario, Canada

Abstract Objectives The aims of this study were to describe emergency department (ED) utilization by people in provincial prison and on release, and to compare […]

Healthcare services use and costs for a cohort of high needs elderly diabetic patients

Abstract Background The worldwide prevalence of diabetes mellitus is increasing, which especially involves people aged >65 years. A recent study also found that almost 75% […]

Individual and social determinants of SARS-CoV-2 testing and positivity in Ontario, Canada: a population-wide study

ABSTRACT Background Optimizing the public health response to reduce the burden of COVID-19 necessitates characterizing population-level heterogeneity of risks for the disease. However, heterogeneity in […]

The influence of frailty on postoperative complications in geriatric patients receiving single-level lumbar fusion surgery

Abstract Purpose This study evaluates the influence of patient frailty status on postoperative complications in those receiving single-level lumbar fusion surgery. Methods The nationwide readmission […]

Medical use of cocaine and perioperative morbidity following sinonasal surgery—A population study

Abstract Background Topical cocaine is favoured by many surgeons for sinonasal surgery due to its superior vasoconstrictive and anesthetic properties. However, historical reports suggesting cocaine […]

Risk Factors and Outcomes of Early Hospital Readmission in Canadian Kidney Transplant Recipients: A PopulationBased Multi-Center Cohort Study

Abstract Background Early hospital readmissions (EHRs) occur commonly in kidney transplant recipients. Conflicting evidence exists regarding risk factors and outcomes of EHRs. Objective To determine […]

Understanding Deductible and Reimbursement Maximum:A Study of Rural China’s Tiered Medical System

Abstract A high-deductible coverage is shown to reduce inappropriate health care, while little is known about its effect on social welfare under a reimbursement limit. […]

Claims-based pharmacy markers for comprehensive medication management program case identification: Validation against concurrent and prospective healthcare costs and utilization

Abstract Background Three claims-based pharmacy markers (complex, costly and risky medications) were developed to help automatically identify patients for comprehensive medication management. Objective To evaluate […]

Estimating The Marginal Productivity Of Health Technology Adoption

Abstract Decisions to adopt health technologies rely, in part, on judgements about cost effectiveness. Cost effectiveness is commonly assessed against a willingness-to-pay threshold for health […]

Can high-cost spending in the community signal admission to hospital? A dynamic modeling study for urgent and elective cardiovascular patients

Abstract Background Much of the research on high-cost patients in healthcare has taken a static approach to studying what is actually a dynamic process. High-cost […]

Population Health Management: Innovations in Risk Adjustment and Predictive Modeling

Jonathan Weiner, DrPH participated as one of the featured presenters in the 8th Annual Predictive Modeling Web Summit. Watch the below recording of Dr. Weiner’s […]

Using EHR’s Unstructured Data for Risk Stratification

Presented by: Hadi Kharrazi, MHI, MD, PhD
Asst. Professor, JH School of Public Health; Asst. Professor, JH School of Medicine; Research Director, JHCPHIT

This presentation focuses on the potential role of EHR’s unstructured data in identifying frailty markers and improving the prediction of utilization outcomes.

Attention-deficit/hyperactivity disorder in children: excess costs before and after initial diagnosis and treatment cost differences by ethnicity

Arch Pediatr Adolesc Med 160:1063-1069. Division of Research, Kaiser Permanente Medical Care Program, Northern California Region, Oakland, CA, USA OBJECTIVES: To estimate the excess costs […]

Atypical antipsychotic drugs and the risk for acute kidney injury and other adverse outcomes in older adults: a population-based cohort study

Ann Intern Med 161:242-248. London Health Sciences Centre, London, ON, Canada; St. Michael’s Hospital, Toronto, ON, Canada; Yale University and Veterans Affairs Medical Center, New […]

Conspicuous consumption: characterizing high users of physician services in one Canadian province

J Health Serv Res Policy 8:215-224. http://www.ncbi.nlm.nih.gov/pubmed/14596756. Centre for Health Services and Policy Research, University of British Columbia, Vancouver, BC, Canada OBJECTIVES: To examine medical […]

A population-based study of ethnicity and breast cancer stage at diagnosis in Ontario

Curr Oncol 22:97-104. Women’s College Research Institute, Toronto, ON, Canada; University of Toronto, Toronto, ON, Canada; Institute for Clinical Evaluative Sciences, Toronto, ON, Canada BACKGROUND: […]

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