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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 […]

Genetics Consultation Rates Following a Diagnosis of High-Grade Serous Ovarian Carcinoma in the Canadian Province of Ontario

Objective: In 2001, the province of Ontario expanded cancer genetic testing eligibility to include all women with high-grade serous ovarian carcinoma (HGSC) of the ovary, […]

Is case-mix adjustment in primary care at the mercy of coding quality? Yes … and no

BACKGROUND:  Primary care clinicians know that case-mix varies between different physician practices and geographical areas. Leicester City Clinical Commissioning Group (CCG) is now able to quantify […]

Effectiveness of a community care management program for multimorbid elderly patients with heart failure in the Veneto Region

Abstract Background The rapidly growing population of elderly subjects with multimorbidity is at risk of receiving fragmented and uncoordinated care, and have frequent hospitalizations and […]

Population risk and burden of health behavioral–related all-cause, premature, and amenable deaths in Ontario, Canada: Canadian Community Health Survey–linked mortality files

Abstract   Purpose To examine the association of all-cause and premature mortality with four modifiable lifestyle behaviors and quantify the burden of behavioral-related premature death in Ontario, […]

An instrumental variable approach quantifies and confirms the duration of pre-transplant dialysis has negative impact on kidney transplant recipient survival

Abstract Dialysis prior to kidney transplantation may have a detrimental effect on post-transplant Outcomes. However, prior studies have not fully characterized the nature of this […]

Interaction between neighborhood walkability and traffic-related air pollution on hypertension and diabetes: The CANHEART cohort

Abstract Background Living in unwalkable neighborhoods has been associated with heightened risk for diabetes and hypertension. However, highly walkable environments may have higher concentrations of […]

Understanding those overdue for cancer screening by five years or more: A retrospective cohort study in Ontario, Canada

Abstract Populations that are more than just slightly overdue for breast, cervical and colorectal screening should likely be targeted for policy and practice interventions. We […]

Association of Patient, Prescriber, and Region With the Initiation of First Prescription of Biologic Disease-Modifying Antirheumatic Drug Among Older Patients With Rheumatoid Arthritis and Identical Health Insurance Coverage

Abstract Importance Prescribing the first biologic treatment for rheumatoid arthritis (RA) is an important decision for patients, their physicians, and payers, with considerable costs and […]

Multimorbidity patterns in patients with heart failure: an observational Spanish study based on electronic health records

Abstract Objectives To characterise the comorbidities of heart failure (HF) in men and women, to explore their clustering into multimorbidity patterns, and to measure the […]

A Revised Classification Algorithm for Assessing Emergency Department Visit Severity of Populations

ABSTRACT Objectives: Analyses of emergency department (ED) use require visit classification algorithms based on administrative data. Our objectives were to present an expanded and revised version […]

Health care service usage and costs for high-needs elderly patients with heart failure

Abstract Background Heart failure (HF) has been defined as global disease of pandemic proportions, since it affects around 26 million people worldwide.[1] According to a recent […]

Personalized prediction of early childhood asthma persistence: A machine learning approach

Abstract Objective Early childhood asthma diagnosis is common; however, many children diagnosed before age 5 experience symptom resolution and it remains difficult to identify individuals […]

Association Between Surgical Approach and Major Surgical Complications in Patients Undergoing Total Hip Arthroplasty

Abstract Objective To determine whether an anterior approach is associated with lower risk of complications than either a lateral or posterior approach. Design, Setting, and […]

Effect of frailty on postoperative readmissions and cost of care for ovarian cancer

Abstract Objectives Frailty, defined as loss of reserve and vulnerability to changes in health, affects many ovarian cancer patients who are planned to undergo surgery. […]

Healthcare resource utilization in myeloproliferative neoplasms: a population-based study from Ontario, Canada

Abstract Background Health resource utilization (HRU) and associated factors of high cost are not well understood in myeloproliferative neoplasms (MPNs). Methods In this population-based, retrospective […]

Impact of Coronary Artery Severity and Revascularization Prior to Transcatheter Aortic Valve Implantation

Abstract Objective The prevalence of coexisting coronary artery disease (CAD) is high in patients who underwent transcatheter aortic valve implantation (TAVI). Our objective was to […]

Stratifying for Value: An Updated Population Health Risk Stratification Approach

Abstract Objective Most risk stratification approaches attempt to predict clinical outcomes rather than value. For a provider organization or health system to have financial success […]

Kidney Function and Potassium Monitoring After Initiation of Renin-Angiotensin-Aldosterone System Blockade Therapy and Outcomes in 2 North American Populations

Abstract Background: Clinical practice guidelines recommend routine kidney function and serum potassium testing within 30 days of initiating ACE (angiotensin-converting enzyme) inhibitor or angiotensin II […]

Factors Associated With Nonreceipt of Recommended COPD Medications

Abstract Background COPD medications reduce exacerbations and improve quality of life. Despite this, some individuals do not receive medications recommended by practice guidelines. Research Question […]

Performance of quantitative measures of multimorbidity: a population-based retrospective analysis

Abstract Background Multimorbidity measures are useful for resource planning, patient selection and prioritization, and factor adjustment in clinical practice, research, and benchmarking. We aimed to […]

Identifying Complex Patients Using Adjusted Clinical Groups Risk Stratification Tool

ABSTRACT Objectives To produce an efficient and practically implementable method, based on primary care data exclusively, to identify patients with complex care needs who have […]

Validating and Improving Adjusted Clinical Group’s Future Hospitalization and High-Cost Prediction Models for Dutch Primary Care

Abstract The rise in health care costs, caused by older and more complex patient populations, requires Population Health Management approaches including risk stratification. With risk […]

Effect of periodic health exam on provider management of preventive services

Abstract Rationale and objective To evaluate the relationship between receipt of annual physicals and the receipt of provider recommendation for preventive services, during a period […]

Using Additional Data Sets

This webinar explores the use of data sets from other Health and Social Care providers with the ACG system. In particular, it will focus on […]

Inter-Relationship Between Frailty & Multimorbidity

Presented by: Alan Thompson, MSc
Director of User Support, ACG System

Whilst it is true that resource use increases with an increasing degree of frailty, this presentation will demonstrate that not all frail patients are high cost and not all high cost patients are frail.

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, […]

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: […]

READMIT: A clinical risk index to predict 30-day readmission after discharge from acute psychiatric units

J Psychiatr Res 61:205-213. Women’s College Hospital, Toronto, ON, Canada; Women’s College Research Institute, Toronto, ON, Canada; Institute for Clinical Evaluative Sciences, Toronto, ON, Canada; […]

Geriatric conditions in patients undergoing defibrillator implantation for prevention of sudden cardiac death: prevalence and impact on mortality

Circ Cardiovasc Qual Outcomes 9:23-30. Johns Hopkins University Baltimore, MD, USA; Yale School of Medicine, New Haven, CT, USA; University of Colorado, Aurora, CO, USA; […]

Association of anxiety and depression with hypertension control: a US multidisciplinary group practice observational study

J Hypertens 33:221-2222. University of Wisconsin School of Medicine and Public Health, Madison, WI, USA; Veterans Affairs Pittsburgh Healthcare System. Pittsburgh, PA, USA; University of […]

Intraarticular hip injection and early revision surgery following total hip arthroplasty: a retrospective cohort study

Arthritis Rheumatol 67:162-168. University of Toronto, Toronto, Ontario, Canada OBJECTIVE: Therapeutic intraarticular injections are used in the management of hip osteoarthritis (OA). Some studies suggest […]

Adjusting for case mix and social class in examining variation in home visits between practices

Fam Pract 21:355-363. Public Health Policy Unit, School of Public Policy, University College London, London, UK OBJECTIVES: The purpose of this study was to investigate […]

Profiling primary care physician resource use: examining the application of case mix adjustment

J Ambul Care Manage 19:60-80. Health Services Research and Development Center, Johns Hopkins School of Public Health, Baltimore, MD, USA Growing emphasis on managed care […]

Towards a more equitable distribution of resources and assessment of quality of care: validation of a comorbidity based case-mix system

Harefuah 149:665-669. Published in Hebrew. Planning & Health Policy Division, Clalit Health Services Head Offices, Israel BACKGROUND: Equitable distribution of healthcare resources and fair assessments […]

Forecasting physician workforce requirements

JAMA 273:111; author reply 113. Dr Weiner1 presents an exacting analysis of the likely effects of health system reform on physician workforce requirements. His market approach […]

Healthcare utilization patterns and risk adjustment under Taiwan’s National Health Insurance system

J Formos Med Assoc 101:52-59. Graduate Institute of Health Care Organization Administration, College of Public Health, National Taiwan University, Taipei, Taiwan BACKGROUND AND PURPOSE: Some […]

The predictors of self-rated health and the relationship between self-rated health and health service needs are similar across socioeconomic groups in Canada

J Clin Epidemiol 63:412-421. Institute for Work and Health, Toronto, ON, Canada OBJECTIVE: To examine if there are systematic differences in the predictors of self-rated […]

The economic impact of a disability prevention program

J Occup Environ Med 52:15-21. Division of Health Policy and Management, School of Public Health, University of Minnesota, Minneapolis, MN, USA We evaluated the effect […]

Predictive modeling of total healthcare costs using pharmacy claims data: a comparison of alternative econometric cost modeling techniques

Med Care 43:1065-1072. Caremark, Hunt Valley, MD, USA OBJECTIVE: We sought to evaluate several statistical modeling approaches in predicting prospective total annual health costs (medical […]

The mortality risk score and the ADG score: two points-based scoring systems for the Johns Hopkins aggregated diagnosis groups to predict mortality in a general adult population cohort in Ontario, Canada

Med Care 49:940-947. Institute for Clinical Evaluative Sciences, Toronto, ON, Canada BACKGROUND: Logistic regression models that incorporated age, sex, and indicator variables for the Johns […]

Association of antiepileptic drugs with nontraumatic fractures: a population-based analysis

Arch Neurol 68:107-112. Department of Clinical Neurosciences, University of Calgary, Foothills Hospital, Calgary, AB, Canada OBJECTIVE: To explore the relationship between antiepileptic drug (AED) use […]

The importance of continuity of care in the likelihood of future hospitalization: is site of care equivalent to a primary clinician?

Am J Public Health 88:1539-1541. Department of Family Medicine, Medical University of South Carolina, Charleston, SC, USA OBJECTIVES: This study examined the effect of continuity […]

Health of Medicare Advantage plan enrollees at 1 year after Hurricane Katrina

Am J Manag Care 15:13-22. Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA OBJECTIVE: To assess the effects of Hurricane Katrina on mortality, […]

Chiropractic use by urban and rural residents with insurance coverage

J Rural Health 25:253-258. Department of Health Services, University of Washington, Seattle, WA, USA PURPOSE: To describe the use of chiropractic care by urban and […]

Case-mix and variation in specialist referrals in general practice

Br J Gen Pract 55:529-533. University College London Hospital NHS Trust, London, UK BACKGROUND: The potential of a comprehensive measure of patient morbidity to explain […]

US primary care delivery after the Health Center Growth Initiative: comparison of health centers, hospital outpatient departments, and physicians’ offices

J Ambul Care Manage 35:60-74. Department of Health Policy and Management, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA We compared patient management […]

Depression and use of health care services in patients with advanced cancer

Can Fam Physician 59:e168-e174. University Health Network, Toronto, ON, Canada OBJECTIVE: To examine whether depression in patients with advanced cancer is associated with increased rates […]

Future complexity of care tier affected by depression outcomes

J Prim Care Community Health 5:30-35. Mayo Clinic, Rochester, MN, USA. BACKGROUND: The inclusion of mental health issues in the evaluation of multimorbidity generally has […]

Modelling the ability of risk adjusters to reduce adverse selection in managed care

Appl Health Econ Health Policy 3:107-114. Stanford Prevention Research Center, Stanford University Medical School, Stanford, CA, USA Population-based risk adjustment, as applied to reimbursement in […]

Antihypertensive adherence and drug class among Asian Pacific Americans

Ethn Health 12:265-281. Hawaii Medical Service Association, Honolulu, HI, USA OBJECTIVE: Research on adherence has emphasized the need to consider patient ethnicity when developing adherence […]

Use and costs of care in retail clinics versus traditional care sites

Health Aff 27:1283-1292. HealthPartners in Minneapolis, MN, USA Erratum in Health Aff (Millwood). 2008 Nov-Dec;27(6):1751. Retail clinics have generated much interest, promising convenient, lower-cost service […]

Individual and contextual determinants of regional variation in prescription drug use: an analysis of administrative data from British Columbia

PLoS One 5:e15883. Centre for Health Services and Policy Research, University of British Columbia, Vancouver, BC, Canada BACKGROUND: Increasing attention is being paid to variations […]

Comparative performance of community health centers and other usual sources of primary care

J Ambul Care Manage 34:380-390. Schneider Institutes for Health Policy, Brandeis University, Waltham, MA, USA OBJECTIVE: To determine how Community Health Centers (CHCs) perform relative […]

A population-based analysis of esophageal and gastric cardia adenocarcinomas in Ontario, Canada: incidence, risk factors, and regional variation

J Gastrointest Surg 15:782-790. Sunnybrook Health Sciences Centre, Toronto, ON, Canada INTRODUCTION: In Western countries, the incidence of esophageal adenocarcinoma (EA) and gastric cardia adenocarcinoma […]

Use of complementary and alternative medicine providers by fibromyalgia patients under insurance coverage

Arthritis Rheum 57:71-76. University of Washington, Seattle, WA, and Boise State University, Boise, ID, USA OBJECTIVE: To quantify how visits and expenditures differ between insured […]

Two-year trends in cancer screening among low socioeconomic status women in an HMO-based high-deductible health plan

J Gen Intern Med 27:1112-9. Department of Population Medicine, Harvard Medical School, Boston, MA, USA BACKGROUND: Cancer screening is often fully covered under high-deductible health […]

Early cholecystectomy for acute cholecystitis: a population-based retrospective cohort study of variation in practice

CMAJO 1:E62-E67. University of Toronto, Toronto, ON, Canada BACKGROUND:  Despite evidence in favour of early cholecystectomy for most patients with acute cholecystitis, variation in practice […]

The impact of high-deductible health plans on men and women: an analysis of emergency department care

Med Care 51:639-645. Division of Health Policy and Management, University of Minnesota School of Public Health, Minneapolis, MN, USA BACKGROUND: Prior studies show that men […]

Predictive risk modelling in the Spanish population: a cross-sectional study

BMC Health Serv Res 13:269. Osakidetza, Basque Health Service, Bilbao, Spain. BACKGROUND: An increase in chronic conditions is currently the greatest threat to human health […]

Low-socioeconomic-status enrollees in high-deductible plans reduced high-severity emergency care

Health Aff 32:1398-1406. Harvard Medical School and Harvard Pilgrim Health Care Institute, Boston, MA, USA One-third of US workers now have high-deductible health plans, and […]

Undiagnosed hypertension among young adults with regular primary care use

J Hypertens 32:65-74. University of Wisconsin School of Medicine and Public Health, Madison, WI; Veterans Affairs Pittsburgh Healthcare System and School of Pharmacy, University of […]

Age and gender differences in the prevalence and patterns of multimorbidity in the older population

BMC Geriatr 14:75. Department of Health Wellbeing and Family, Government of Aragón, Zaragoza, Spain BACKGROUND: The coexistence of several chronic diseases in one same individual, […]

The impact of influenza vaccination on hospitalizations and mortality among frail older people

J Am Med Dir Assoc 15:256-260. National Yang-Ming University, Taipei, Taiwan OBJECTIVES: The objective of this study was to evaluate the benefits of influenza vaccination […]

Federally qualified health center efficacy study

Montpelier, VT, USA: Vermont Program for Quality in Health Care. Vermont Program for Quality in Health Care, Montpelier, VT, USA OBJECTIVE: The objective of the […]

Homecare after pediatric traumatic brain injury: what do they use and how much does it cost?

Arch Phys Med Rehabil 96:e38. University Health Network, Toronto, ON, Canada Objective(s): To determine, by sex, the predictors, types, and direct cost of publicly funded […]

Trends in abdominal aneurysm surgery, 2002-2014

Toronto, ON, Canada: Institute for Clinical Evaluative Sciences (internal report). Institute for Clinical Evaluative Sciences, Toronto, ON, Canada Methods: We conducted a population-based cohort study […]

Building a predictive model for 30-day inpatient readmission using PROC PHREG

Presented at NESUG 2012. Baltimore, MD, USA: North East SAS User Group. Department of Health Policy and Management, Bloomberg School of Public Health, Johns Hopkins […]

Adverse selection, welfare and the optimal pricing of employer-sponsored health plans

St. Paul, MN, USA: University of Minnesota and NBER. University of Minnesota, St. Paul, MN, USA We assess the welfare impact of adverse selection in […]

Patterns of regional mental illness disorder diagnoses and service use in Manitoba: a population-based study

Winnepeg, MB, Canada: Manitoba Centre for Health Policy. Manitoba Centre for Health Policy, University of Manitoba, Winnipeg, MB, Canada Mental illness is a profound problem […]

Ambulatory Care Groups: an evaluation for military health care use

Fort Sam Houston, TX, USA: United States Army Center for Healthcare Education and Studies, publication #HR 94-004. United States Army Center for Healthcare Education and […]

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