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Comparison of 4-Year Health Care Expenditures Associated With Roux-en-Y Gastric Bypass vs Sleeve Gastrectomy

Abstract Objective To compare 4-year health care expenditures after RYGB vs sleeve gastrectomy, identify factors independently associated with 4-year health care expenditures, and compare the […]

No Difference in Outcomes Between Short and Longer-Stay Total Joint Arthroplasty with a Discharge Home

Abstract Background: Outcomes following total hip arthroplasty (THA) and total knee arthroplasty (TKA) with a short length of hospital stay have been reported; however, most […]

Remote, proactive, telephone based management of toxicity in outpatients during adjuvant or neoadjuvant chemotherapy for early stage breast cancer: pragmatic, cluster randomised trial

Abstract Objective To evaluate the effectiveness of remote proactive management of toxicities during chemotherapy for early stage breast cancer. Design Pragmatic, cluster randomised trial. Setting […]

Case Study: The Distilling of a Biased Algorithmic Decision System through a Business Lens

Abstract Technological advances embedded within algorithmic decision systems are being deployed every day. Some of these investments are unquestionably worthwhile, while some others prioritize commercialization […]

The Effect of Depression on Paid Sick Leave due to Metabolic and Cardiovascular Disease in low-wage workers. (Depression and Sick Leave)

Abstract Background Colombia’s health system allows workers to claim paid sick leave due to health conditions, some of this conditions are related to metabolic and […]

Changing patterns of multimorbidity among patients with ambiguous diagnoses: The case of Myalgic Encephalomyelitis/Chronic Fatigue Syndrome

Abstract Introduction Increased attention has been given to multimorbidity. This phenomenon often has been explored through associations between diseases based on the frequency of combinations […]

Readmissions Infographic

Preventing avoidable hospital readmissions is considered by many to be the most important opportunity for reducing waste in health care.  The Johns Hopkins ACG® System can […]

Defining and Assessing Geriatric Risk Factors and Associated Health Care Utilization Among Older Adults Using Claims and Electronic Health Records

Abstract Background: Using electronic health records (EHRs), in addition to claims, to systematically identify patients with factors associated with adverse outcomes (geriatric risk) among older […]

Supporting Clinical Activities

The ACG System UK Team hosts a series of webinars aimed at providing an overview on a number of topics related to risk stratification, population […]

Predictive Modelling in Action

An introduction to the principles of predictive modeling in health care and examples of how predictive models are being used in the NHS in England. Learn more.

Do physicians who diagnose more mental health disorders generate lower health care costs?

J Fam Pract 49:305-310. University of Rochester School of Medicine, New York, NY, USA BACKGROUND: Underrecognition and undertreatment of mental health disorders in primary care […]

A cross-sectional, population-based study measuring comorbidity among people living with HIV in Ontario

BMC Public Health 14:161. Primary Health Care Research Centre, Bruyère Research Institute, Ottawa, ON, Canada BACKGROUND: As people diagnosed with HIV and receiving combination antiretroviral […]

Health information exchange and the frequency of repeat medical imaging

Am J Manag Care 20:eSP16-24. Weill Cornell Medical College, New York, NY, USA OBJECTIVES: Medical imaging, which is expensive, is frequently repeated for the same […]

Missed strokes using computed tomography imaging in patients with vertigo: population-based cohort study

Stroke 46:108-113. University of Toronto, Toronto, ON, Canada; University Health Network, Toronto, ON, Canada; Institute for Clinical Evaluative Sciences, Toronto, ON, Canada BACKGROUND AND PURPOSE: […]

The effect of pelvic fractures on future stress incontinence and pelvic organ prolapse surgery

Int Urogynecol J Western University, London, ON, Canad INTRODUCTION AND HYPOTHESIS: Pelvic fractures in women significantly disrupt the pelvic floor, which may cause stress urinary […]

Association between metformin use and mortality after cervical cancer in older women with diabetes

Cancer Epidemiol Biomarkers Prev 25:507-512. University Health Network, Toronto, ON, Canada; University of Toronto, Toronto, ON, Canada; Women’s College Hospital, Toronto, ON, Canada; Institute of […]

Effect of specialized diagnostic assessment units on the time to diagnosis in screen-detected breast cancer patients

Br J Cancer 112:1744-1750. Queen’s University, 10 Stuart Street, Kingston, ON, Canada; Cancer Care Ontario, Toronto, ON, Canada; Kingston General Hospital, Kingston, ON, Canada; University […]

Is the association between physical activity and healthcare utilization affected by self-rated health and socio-economic factors?

BMC Public Health 15:737. Lund University, Malmö, Sweden BACKGROUND: Physical activity and healthcare utilization has negative association. However, there appears to be limited knowledge of […]

Full-service family practice in British Columbia: policy interventions and trends in practice, 1991-2010

Healthc Policy 9:32-47. University of British Columbia Vancouver, BC, Canada BACKGROUND: British Columbia’s primary care reform (initiated in 2002) aims to promote “full-service family practice” […]

Risk-adjusted Medicare capitation rates using ambulatory and inpatient diagnoses

Health Care Financ Rev 17:77-99. Johns Hopkins School of Public Health, Baltimore, MD, USA Researchers at The Johns Hopkins University (JHU) developed two new diagnosis-oriented […]

Patient ability and willingness to participate in a web-based intervention to improve hypertension control.

J Med Internet Res 13:e1. Group Health Research Institute, Seattle, WA, USA BACKGROUND: Patient-shared electronic health records provide opportunities for care outside of office visits. […]

Measures of multimorbidity and morbidity burden for use in primary care and community settings: a systematic review and guide

Ann Fam Med 10:134-141. Academic Unit of Primary Health Care, School of Social and Community Medicine, Bristol University, Bristol, UK PURPOSE: Many patients consulting in […]

Development of a risk-adjusted capitation model based on principal inpatient diagnoses in Taiwan

J Formos Med Assoc 102:637-643. Graduate Institute of Health Policy and Management, College of Public Health, National Taiwan University, Taipei, Taiwan BACKGROUND AND PURPOSE: Taiwan’s […]

Use of proton pump inhibitors and risk of osteoporosis-related fractures

CMAJ 179:319-326. Department of Gastroenterology, Division of Internal Medicine, University of Manitoba, Winnipeg, MB, Canada BACKGROUND: The use of proton pump inhibitors has been associated […]

Formal risk adjustment by private employers

Inquiry 38:299-309. Department of Economics, Boston University, Boston, MA, USA This paper explores explanations for why few private employers have adopted formal risk adjustment. The […]

Patient use of secure electronic messaging within a shared medical record: a cross-sectional study

J Gen Intern Med 24:349-355. Group Health Cooperative, Center for Health Studies, Seattle, WA, USA BACKGROUND: Most patients would like to be able to exchange […]

HMO family physicians: men and women differ in their work

HMO Pract 9:155-161. Group Health Cooperative of Puget Sound, Seattle, WA, USA OBJECTIVE: The goal was to identify differences in the type of work and […]

Effect of premium, copayments, and health status on the choice of health plans

Med Care 46:1033-1040. Division of Health Care Policy & Research, Department of Health Sciences Research, Mayo Clinic, Rochester, MN, USA OBJECTIVE: Explore effects of comorbidity […]

Patient sharing among physicians and costs of care: a network analytic approach to care coordination using claims data

J Gen Intern Med 28:459-465. Johns Hopkins University School of Medicine, Baltimore, MD, USA BACKGROUND: Improving care coordination is a national priority and a key […]

Case-mix index and length of hospitalization

G Chir 31:211-214. Published in Italian. Department of Surgical Sciences, Sapienza University of Rome, Italy. The ACG (Adjusted Clinical Groups) case-mix system is a classification […]

ACG case-mix system aids contract assessment, improves performance

Data Strateg Benchmarks 4:21-26. The ABCs of ACGs. Adjusted clinical groups, or ACGs, a risk adjustment system developed by Baltimore-based Johns Hopkins University, are being […]

Realigning incentives in fee-for-service Medicare

Health Aff 22:59-70. Schneider Institute for Health Policy, Brandeis University, Waltham, MA, USA This paper proposes Medicare payment reform built on the fee-for-service system, with […]

Work limitations and their relationship to morbidity burden among academic health center employees with diabetes

Workplace Health Saf 60:425-434. Department of Acute and Chronic Care, John Hopkins University School of Nursing, Baltimore, MD, USA The objective of this study was […]

Population-based trends in osteoporosis management after new initiations of long-term systemic glucocorticoids (1998-2008)

J Clin Endocrinol Metab 97:1236-1242. University of Alberta and University of Alberta Hospital, Edmonton, AB, Canada OBJECTIVES: Our objective was to describe changes in glucocorticoid-induced […]

Ambulatory care casemix measures

J Gen Intern Med 10:162-170. HSR&D Field Program, Edith Nourse Rogers Memorial Veterans Hospital, Bedford, MA, USA No abstract PMID: 7769475

Racial and ethnic differences in utilization of health services in patients with diabetes enrolled in Medicaid

J Health Care Poor Underserved 15:562-575. General Internal Medicine and Health Services Research, UCLA School of Medicine, Los Angeles, CA, USA. We evaluated racial and […]

The effect of acupuncture utilization on healthcare utilization

Med Care 46:41-48. Department of Pharmacy Practice, Albany College of Pharmacy, Research Institute for Health Outcomes, Albany, NY, USA OBJECTIVE: To determine whether acupuncture is […]

A systematic review of health care efficiency measures

Health Serv Res 44:784-805. RAND, Arlington, VA, USA OBJECTIVE: To review and characterize existing health care efficiency measures in order to facilitate a common understanding […]

Achieving cost control, care coordination, and quality improvement in the Medicaid program

J Ambul Care Manage 33:38-49; discussion 69-70. ACS Government Healthcare Solutions, Helena, MT, USA As Medicaid spending rises quickly, controlling cost while coordinating care and […]

Bone microarchitecture assessed by TBS predicts osteoporotic fractures independent of bone density: the Manitoba study

J Bone Miner Res 26:2762-2769. Bone Disease Unit, University of Lausanne, Lausanne, Switzerland The measurement of BMD by dual-energy X-ray absorptiometry (DXA) is the “gold […]

Two-year trends in colorectal cancer screening after switch to a high-deductible health plan

Med Care 49:865-871. Department of Population Medicine, Harvard Medical School and Harvard Pilgrim Health Care Institute, Boston, MA, USA BACKGROUND: Recent health reform laws might […]

Postoperative health-care utilization in Crohn’s disease: the impact of specialist care

Am J Gastroenterol 107:1522-1529. Mount Sinai Hospital Centre for Inflammatory Bowel Disease, University of Toronto, Toronto, ON, Canad OBJECTIVES: Crohn’s disease (CD) patients frequently require […]

How does complementary private prescription drug insurance coverage affect seniors’ use of publicly funded medications?

Health Policy 110:147-155. School of Public Policy and Governance, University of Toronto, Toronto, ON, Canada BACKGROUND: Like in many other high-income jurisdictions, the public drug […]

Division of primary care services between physicians, physician assistants, and nurse practitioners for older patients with diabetes

Med Care Res Rev 70:531-541. University of Wisconsin–Madison, WI, USA; University of Pittsburgh School of Pharmacy, Pittsburgh, PA, USA Team-based care involving physician assistants and/or […]

Resources allocation and health care needs in diabetes care in Danish GP clinics

Health Policy 113:206-215. Institute of Public Health, Centre of Health Economics Research, Faculty of Health Sciences, University of Southern Denmark, Odense, Denmark BACKGROUND: In several […]

Measuring medical productivity to gauge the value of Medicare

Minn Med 96:46-48. Department of Finance, Medical Industry Leadership Institute, Carlson School of Management, University of Minnesota, Minneapolis, MN, USA. Having a measure of productivity […]

The effect of medical malpractice liability on rate of referrals received by specialist physicians

Health Econ Policy Law 8:453-475. Yale University School of Medicine, New Haven, CT, USA; Wayne State University, Detroit, MI, USA; University of Michigan, School of […]

Determinants of buprenorphine treatment for opioid dependence

J Subst Abuse Treat 46:315-319. Washington State University, Spokane, WA, USA; Group Health Research Institute, Seattle, WA, USA This study assessed the social, demographic and […]

How is the electronic health record being used? Use of EHR data to assess physician-level variability in technology use

J Am Med Inform Assoc Weill Cornell Medical College, New York, NY, USA BACKGROUND: Studies of the effects of electronic health records (EHRs) have had […]

Procedures take less time at ambulatory surgery centers, keeping costs down and ability to meet demand up

Health Aff 33:764-769. University of Louisville, Louisville, KY, USA; University of Minnesota, Minneapolis, MN, USA During the past thirty years outpatient surgery has become an […]

The association between parental depression and children’s health care utilization and expenditures: exploring the dimensions of parental gender and timing of depressive symptoms

Baltimore, MD, USA: Johns Hopkins University (doctoral dissertation). Department of Health Policy and Management, Johns Hopkins University, Baltimore, MD, USA Methods: The study used multiple […]

A descriptive analysis of the Ontario MedsCheck annual pharmacy medication review service

Canadian Pharmacists Journal 148:S27. OBJECTIVES: A MedsCheck Annual (MCA) consultation is a medication review service funded by the Ontario government for people taking three or […]

Associations among socioeconomic status (SES), patterns of care and outcomes in breast cancer (BC) patients (pts) in a universal health care system: Ontario’s experience

2014 American Society of Clinical Oncology Annual Meeting. Abstract 6625. J Clin Oncol 32 (suppl; abstr 6625). University of Toronto, Toronto, ON, Canada; Sunnybrook Health […]

The impact of not having a primary care physician among people with chronic conditions

Toronto, ON, Canada: Institute for Clinical Evaluative Sciences. Institute for Clinical Evaluative Sciences, Toronto, ON, Canada BACKGROUND: Primary care plays a pivotal role in health […]

Using the Adjusted Clinical Groups System to identify high-risk hemodialysis patients in Taiwan

J Healthc Manag 11:311-326. Published in Chinese. OBJECTIVES: There has been a rising number and cost of patients with regular hemodialysis in Taiwan. The objective […]

Risk distribution and risk assessment among enrollees in Washington state’s Medicaid SSI population

Hamilton, NJ, USA: Center for Health Care Strategies. Center for Health Care Strategies, Hamilton, NJ, USA Washington state began enrolling Medicaid SSI (low income, disabled) […]

Risk adjustment and rate setting methods in public programs

A report to legislature. St. Paul, MN, USA: Minnesota Department of Health. Health Economics Program, Minnesota Department of Health, St. Paul, MN, USA The 1995 […]

Updating and calibrating the Johns Hopkins University ACG/ADG risk adjustment method for application to Medicare risk contracting

Final report to Health Care Financing Administration. Baltimore, MD, USA: Johns Hopkins University. Johns Hopkins University, Baltimore, MD, USA The Balanced Budget Act (BBA) of […]

An operational framework for paying physician specialists a risk-adjusted fixed payment and incorporating the results in a global premium rating model

Los Angeles, CA, USA: UCLA (doctoral dissertation). University of California, Los Angeles, CA, USA The demand for more accurate and equitable professional medical specialty payments […]

Characteristics and utilization patterns of high-cost recipients in Medicaid population

MEDTAP 2001-2003 Research Project #1. Cincinnati, OH, USA: University of Cincinnati and Institute for Health Policy and Health Services Research. University of Cincinnati and Institute […]

Adjusting for patients’ clinical case mix explains variation in general practice prescribing

Research report no. 291, Department of Statistical Science. London, UK: University College London. University College London, London, UK BACKGROUND: The potential of using patient-level measures […]

Investigating whether the Johns Hopkins ACG case-mix system explains variation in UK general practice

London, UK: University College London (doctoral dissertation). University College London, London, UK This thesis describes the first large-scale studies in the United Kingdom to adjust […]

Familial aggregation of childhood health and the socioeconomic gradient of disease: a longitudinal population-based sibling analysis

Winnipeg, MB, Canada: University of Manitoba (masters thesis). University of Manitoba, Winnipeg, MB, Canada The Johns Hopkins ACG(r) Case-Mix System grouped various physician and hospital […]

Impact of rheumatoid arthritis on recognition of hypertension in a medically homed population

Arthritis Rheum 64:S712-S713. University of Wisconsin, Madison, WI, USA BACKGROUND/PURPOSE: Numerous studies report increased cardiovascular disease (CVD) events and others describe increased arterial stiffness in […]

Adjusted Clinical Groups (ACG) and co-morbidity

ImPrim Report D. Karlskrona, Sweden: ImPrim. Blekinge Centre of Competence, Karlskrona, Sweden No abstract

Depression, anxiety disorders, and related health care utilization in the Manitoba Metis population

Winnipeg, MB, Canada: Manitoba Metis Federation. Manitoba Metis Federation, Winnipeg, MB, Canada This report resulted from the need to understand further the findings in the […]

Leicester City CCG Case Study 3

Use of ACG® System output to support distribution of CCG Better Care Fund monies

Resource Allocation Case Study-Government

Sweden became one of the first international adopters of the Johns Hopkins ACG System in the mid 1990s and has expanded its use to cover […]

Poster: Morbidity Burden Resource Use and Quality of Care of Diabetic Patients

Morbidity burden, resource use and quality of care of diabetic patients: A 4-year cohort analysis at a regional hospital in Thailand. Roongkarn Pannarunothai, Buddhachinaraj Hospital, […]

Embedding ACGs in Berkshire

NHS Berkshire Embedding ACGs in Berkshire Karen Grannum Primary Care Business Intelligence Lead

Using the ACG Toolkit to Support Population Monitoring

DST Health Solutions Using the ACG Toolkit to Support Population Monitoring Lisa Kabasakalian

Monday(C3)-Identifying Potentially Actionable Chronic Disease Patterns From Diagnoses Reported in Administrative Claims-Dave Bodycombe

Identifying Potentially Actionable Chronic Disease Patterns From Diagnoses Reported in Administrative Claims —Dave Bodycombe, Johns Hopkins University

Tuesday(C6)-Integration of claim-based diagnoses with diagnoses from General Practitioners (GPs) clinical database records improves the comorbidity description”-Corti

 Integration of claim-based diagnoses with diagnoses from General  Practitioners (GPs) clinical database records improves the comorbidity description” Maria Chiara Corti,  E. Schievano F. Avossa, K. Kinder, […]

What causes ’poly-morbidity’? Searching for triggers of multi-morbidity: tracing patient record 30 years back

Lennart Carlsson, PhD; Gunnar H Nilsson, Professor; Centre for Family Medicine, Karolinska Institutet, Sweden

Beyond Risk Scores: Lisa Kabasakalian, DST Health Solutions

ACG System DST Health Solutions Beyond Risk Scores: Identifying “High-Risk” and “At-Risk” Populations Lisa Kabasakalian

The ACG System Worldwide

ACG System Executive Director Karen Kinder, PhD, provides a candid tour of the ACG System’s international history and evolution to what is now the most […]

Population Segmentation Case Study – Government

Three Clinical Commissioning Groups (CCGs) analyzed their local populations as part of a new national initiative to address the care of people who are frail.  Learn more.

The Association of Frailty With Outcomes and Resource Use After Emergency General Surgery: A Population-Based Cohort Study

BACKGROUND: Older patients undergoing emergency general surgery (EGS) experience high rates of postoperative morbidity and mortality. Studies focused primarily on elective surgery indicate that frailty […]

Indianapolis Provider’s Use Of Wraparound Services Associated With Reduced Hospitalizations And Emergency Department Visits

ABSTRACT Recent changes to US reimbursement policies are increasingly holding providers financially accountable for patients’ health. Providing nonmedical services in conjunction with primary care—known as […]

Healthcare costs and utilization associated with high-risk prescription opioid use: a retrospective cohort study

Abstract Background Previous studies on high-risk opioid use have only focused on patients diagnosed with an opioid disorder. This study evaluates the impact of various […]

Nonsteroidal anti-inflammatory drug use and risk of acute kidney injury and hyperkalemia in older adults: a population-based study

Abstract   Background Clinical guidelines caution against nonsteroidal anti-inflammatory drug (NSAID) use in older adults. The study objective was to quantify the 30-day risk of […]

Development of Alzheimer disease in old major depressive patients based upon their health status: A retrospective study in Taiwan

Abstract   This study is conducted to investigate the association between major depressive disorder and the subsequent development of Alzheimer disease (AD) in elderly patients […]

Symptom trajectories and predictors of severe symptoms in pancreatic adenocarcinoma at the end-of-life: a population based analysis of 2,538 patients

Abstract Background We evaluated symptom trajectories and predictors of reporting severe symptoms in the last 6 months of life among non-resected pancreatic adenocarcinoma (PAC) decedents. […]

Cardiovascular Consequences of Obstructive Sleep Apnea in Women: A Historical Cohort Study

Abstract Objective Background: Evidence on sex differences in the association between obstructive sleep apnea (OSA) and cardiovascular outcomes is limited and controversial. We conducted a […]

Is Frailty Associated With Worse Outcomes After Head and Neck Surgery? A Narrative Review

Abstract Objective Frailty has emerged as an important determinant of many health outcomes across various surgical specialties. We examined the published literature reporting on frailty […]

The Impact of Team-Based Primary Care on Guideline-Recommended Disease Screening

Abstract Introduction Family Medicine Groups, implemented in Quebec in 2002, are interprofessional primary care teams designed to improve timely access to high-quality primary care. This […]

Identification of Prenatal Opioid Exposure Within Health Administrative Databases

Abstract BACKGROUND: Health administrative data offer a vital source of data on maternal prenatal opioid exposure (POE). The impact of different methods to estimate POE, especially […]

Sepsis-Associated Mortality, Resource Use, and Healthcare Costs: A Propensity-Matched Cohort Study

Abstract Objectives: To examine long-term mortality, resource utilization, and healthcare costs in sepsis patients compared to hospitalized nonsepsis controls. Design: Propensity-matched population-based cohort study using administrative data. […]

Mental Health Services Provision in Primary Care and Emergency Department Settings: Analysis of Blended Fee-for-Service and Blended Capitation Models in Ontario, Canada

Abstract Background Treating mental illnesses in primary care is increasingly emphasized to improve access to mental health services. Although family physicians (FPs) or general practitioners […]

Associations of clinically recognized vs unrecognized vertebral fracture with mortality

Abstract Purpose Our purpose was to contrast mortality associated with clinically undiagnosed prevalent vertebral fracture recognized on densitometric vertebral fracture assessment (VFA) and prior clinically […]

Intensity of End-of-Life Care in a Cohort of Commercially Insured Women With Metastatic Breast Cancer in the United States

ABSTRACT Purpose There is limited evidence on the intensity of end-of-life (EOL) care for women < 65 years old, who account for about 40% of […]

High‐deductible health plans and low‐value imaging in the emergency department

Abstract Objective To examine the effect of an employer‐mandated switch to high‐deductible health plans (HDHP) on emergency department (ED) low‐value imaging. Data Sources Claims data […]

Primary care-based smoking cessation treatment and subsequent healthcare service utilisation: a matched cohort study of smokers using linked administrative healthcare data

ABSTRACT Background No research has assessed the individual-level impact of smoking cessation treatment delivered within a general primary care patient population on multiple forms of […]

Association between chronic bladder catheterisation and bladder cancer incidence and mortality: a population based retrospective cohort study in Ontario, Canada

Abstract Objectives To compare the risk of bladder cancer and bladder cancer mortality among patients with chronic bladder catheterisation (indwelling or intermittent) to patients from […]

Operationalizing Outpatient Palliative Care Referral Criteria in Lung Cancer Patients: A Population-Based Cohort Study Using Health Administrative Data

Abstract Background Early referral of cancer patients for palliative care significantly improves the quality of life. It is not clear which patients can benefit from […]

Association of bilateral salpingo-oophorectomy with all cause and cause specific mortality: population based cohort study

Abstract Objectives To determine if bilateral salpingo-oophorectomy, compared with ovarian conservation, is associated with all cause or cause specific death in women undergoing hysterectomy for […]

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