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Association of Cumulative Proton Pump Inhibitor Use with Prostate Cancer Risk and Outcomes: A Population-Based Cohort Study

Abstract Proton pump inhibitor (PPI) use has been associated with increased prostate cancer risk in case–control and cohort studies of men with a negative prostate […]

Determinants of Failure to Rescue After Pulmonary Resection for Lung Cancer: Insights From a National Inpatient Sample

ABSTRACT Background and Objectives Failure to rescue (FTR), defined as death following a postoperative complication, is an established quality metric; however, national data after pulmonary […]

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ACG System White Paper

 THE JOHNS HOPKINS ACG® SYSTEM is a leading risk measurement methodology that was developed and continues to be tested and improved at the Bloomberg School […]

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Risk Stratification: Identifying Geriatric Frailty from EHR Unstructured Data

With providers engaging more with risk stratification tools, unstructured data and free text from Electronic Health Records (EHRs), a potential exists to more effectively identify […]

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Care Density: A Social Network Approach to Claims Data

If optimizing quality of care, clinical outcomes and cost effectiveness is one of your priorities, ensuring your patient population receives comprehensive, coordinated care from their […]

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Understanding Population Health

With the challenges facing our health and social care services and the need to develop new care models to achieve the triple aim of improving […]

Risk aversion and costs: a comparison of family physicians and general internists

J Fam Pract 49:12-17. Department of Family Medicine, University of Rochester, New York, NY, USA No abstract Comment in: Interspeciality differences in medical resource utilization. […]

Obstructive sleep apnea and incident diabetes

A historical cohort study. Am J Respir Crit Care Med 190:218-225. University of Toronto, Toronto, ON, Canada; Institute for Clinical Evaluative Sciences, Toronto, ON, Canada; […]

The pattern of urologic care among traumatic spinal cord injured patients

Can Urol Assoc J 8:E805. Institute for Clinical Evaluative Sciences, Toronto, ON, Canada INTRODUCTION: We assessed the urologic care patterns of traumatic spinal cord injury […]

Risk factors for reoperation and mortality after the operative treatment of tibial plateau fractures in Ontario, 1996-2009

J Orthop Trauma 29:182-188. University of Toronto, Toronto, ON, Canada; Institute for Clinical Evaluative Sciences, Toronto, ON, Canada OBJECTIVE: To define the rates and risk […]

Do different case-mix measures affect assessments of provider efficiency? Lessons from the Department of Veterans Affairs

J Ambul Care Manage 26:229-242. Center for Health Quality, Outcomes and Economic Research, Bedford VAMC, Bedford, MA, USA Although case-mix adjustment is critical for provider […]

Achieving weight loss and hypertension control among obese adults: a US multidisciplinary group practice observational study

Am J Hypertens University of Wisconsin School of Medicine and Public Health, Madison, WI, USA; Veterans Affairs Pittsburgh Healthcare System , Pittsburgh, PA, USA; University […]

Association between the patient-centered medical home and healthcare utilization

Am J Manag Care 21:378-386. Weill Cornell Medical College, New York, NY, USA OBJECTIVES: The patient-centered medical home (PCMH) model of primary care is being […]

Caring for dementia: a population-based study examining variations in guideline-consistent medical care

Alzheimers Dement 11:906-916. UBC Centre for Health Services and Policy Research, School of Population and Public Health, Vancouver, BC, Canada BACKGROUND: Evidence indicates that early […]

What do we mean by multimorbidity? An analysis of the literature on multimorbidity measures, associated factors, and impact on health services organization

Rev Epidemiol Sante Publique 62:305-314. Hôpital Jean-Verdier, Bondy, France; Université Paris, Paris Cité, Bobigny, France BACKGROUND: Multimorbidity is a consequence of both epidemiological and demographic […]

The development of a risk-adjusted capitation payment system: the Maryland Medicaid model

J Ambul Care Manage 21:29-52. School of Public Health, Johns Hopkins University, Baltimore, MD, USA This article describes the risk-adjusted payment methodology employed by the […]

Does high-risk pool coverage meet the needs of people at risk for disability?

Inquiry 45:340-352. University of Kansas, Lawrence, KS, USA State high-risk insurance pools serve people denied coverage because of pre-existing conditions. With benefit plans modeled on […]

Comparison of Rx-defined morbidity groups and diagnosis-based risk adjusters for predicting healthcare costs in Taiwan

BMC Health Serv Res 10:126./p> Institute of Preventive Medicine, College of Public Health, National Taiwan University, Taipei, Taiwan BACKGROUND: Medication claims are commonly used to […]

Classification systems in case-mix groups in ambulatory care. Perspectives for our primary health care

Aten Primaria 17:76-82. Published in Spanish. Unitat d’Investigació Centre, Institut Català de la Salut, CESCA, Barcelona, Spain No abstract PMID: 8742149

Proton-pump inhibitor use is not associated with osteoporosis or accelerated bone mineral density loss

Gastroenterology 138:896-904. Section of Gastroenterology, Division of Internal Medicine, University of Manitoba, Winnipeg, MB, Canada BACKGROUNDS and AIMS: Recent studies have shown an association between […]

Primary care and specialty care for US children: what is the right mix?

Arch Pediatr Adolesc Med 157:219-220. Institute for Health Policy, MassGeneral Hospital for Children, Boston, MA, USA THE VERY TITLE of the article by Forrest et […]

Evaluation of the equity of age-sex adjusted primary care capitation payments in Ontario, Canada

Health Policy 104:186-192. Institute for Clinical Evaluative Sciences, Sunnybrook Health Sciences Centre, Toronto, ON, Canada OBJECTIVE: Several innovative primary care models have recently been introduced […]

Ambulatory care provided by office-based specialists in the United States

Ann Fam Med 7:104-111. National Primary Care Research and Development Centre, University of Manchester, Manchester, UK PURPOSE: Increasing use of specialist services in the United […]

Adjust utilization for case mix and make physicians responsible for remaining variation

Data Strateg Benchmarks 2:25-28. “But my patients are sicker!” Health Source/CIGNA put a stop to this physician complaint by switching to quarterly physician profiles that […]

Comparing the medical expenses of adults with Medicaid and commercial insurance in a health maintenance organization

J Health Care Poor Underserved 14:420-435. Division of Research, Kaiser Permanente Medical Care Program, Northern California Region, Oakland, CA, USA The objective of this study […]

Risk adjustment of mental health and substance abuse payments

Inquiry 35:223-239. Department of Health Care Policy, Harvard Medical School, Boston, MA, USA This study used 1992 and 1993 data from private employers to compare […]

The importance of the data quality in the validation of the ACG case mix

Ambulatory Care Groups. Aten Primaria 22:128. Published in Spanish. Osakidetza Servicio Vasco de Salud, Bizkaia, Spain No abstract Comment on:[A retrospective evaluation of the behaviour […]

Promoting advance directives among elderly primary care patients

J Gen Intern Med 19:944-951. Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA OBJECTIVE: To determine efficient ways of promoting advance directives among […]

Licit prescription drug use in a Swedish population according to age, gender and socioeconomic status after adjusting for level of multi-morbidity

BMC Public Health 12:575. Blekinge Centre of Competence, Karlskrona, Sweden BACKGROUND: There is a great variability in licit prescription drug use in the population and […]

Monitoring the prevalence of chronic conditions: which data should we use?

BMC Health Serv Res 12:365. Osakidetza, Basque Health Service, C/ Alava n° 45, Vitoria-Gazteiz, Spain BACKGROUND: Chronic diseases are an increasing threat to people’s health […]

Effect of patient socioeconomic status on physician profiles for prevention, disease management, and diagnostic testing costs

Med Care 40:717-724. Department of Family and Community Medicine, University of California School of Medicine, Davis, CA, USA BACKGROUND: Previous research shows patient socioeconomic status […]

Medical and pharmacy expenditures after implementation of a cyclooxygenase-2 inhibitor prior authorization program

Pharmacotherapy 25:924-934. Medical and Pharmacy Integration Services, Prime Therapeutics, LLC, Eagan, MN, USA STUDY OBJECTIVE: To evaluate the effects of a cyclooxygenase (COX)-2 inhibitor prior […]

The MMPI-2: a contemporary normative study of midwestern family medicine outpatients

J Clin Psychol Med Settings 15:98-119. Department of Psychiatry and Psychology, Mayo Clinic, Rochester, MN, USA For more than 60 years it has been known […]

Relationships between physical activity and perceived qualities of life in old age

Results of the SNAC study. Aging Ment Health 13:1-8. School of Social Science, Vaxjo University, Vaxjo, Sweden OBJECTIVES: The aim of the present study was […]

Impact of morbidity, resource use and costs on maintenance of remission of major depression in Spain: a longitudinal study in a population setting

Gac Sanit 24:13-19. Published in Spanish. Dirección de Planificación, Badalona Serveis Assistencials S.A., Badalona, Barcelona, Spain OBJECTIVE: To determinate the impact of comorbidity, resource use […]

A population-based study of the association between socioeconomic status and emergency department utilization in Ontario, Canada

Acad Emerg Med 18:836-843. Division of Emergency Medicine, Department of Medicine, Dalla Lana School of Public Health, University of Toronto, Toronto, ON, Canada OBJECTIVES: The […]

Complementary and alternative medicine provider use and expenditures by cancer treatment phase

Am J Manag Care 14:326-334. Department of Health Services, School of Public Health and Community Medicine, University of Washington, Seattle, WA, USA OBJECTIVE: To assess […]

A comparison of health care use for physician-referred and self-referred episodes of outpatient physical therapy

Health Serv Res 47:633-654. Center for Public Health Statistics, University of Iowa, Iowa City, IA, USA OBJECTIVE: To compare patient profiles and health care use […]

A population-based description of atrial fibrillation in the emergency department, 2002 to 2010

Ann Emerg Med 62:570-577. Institute for Clinical Evaluative Sciences, Toronto, ON, Canada; Division of Emergency Medicine, Department of Medicine, University of Toronto, Toronto, ON, Canada; […]

Preeclampsia as a risk factor for diabetes: a population-based cohort study

PLoS Med 10:e1001425. Department of Medicine, University of Toronto, Toronto, ON, Canada BACKGROUND: Women with preeclampsia (PEC) and gestational hypertension (GH) exhibit insulin resistance during […]

Vaccine effectiveness against laboratory-confirmed influenza hospitalizations among elderly adults during the 2010-2011 season

Clin Infect Dis 57:820-827. Institute for Clinical Evaluative Sciences, Toronto, ON, Canada BACKGROUND: Although annual influenza immunization is recommended for adults aged ≥65 years due […]

Morbidity and costs associated to neurological disorders

Neurologia 28:126-129. Directorate of Planning, Badalona Serveis Assistencials SA, Badalona, Spain La presencia de múltiples enfermedades es frecuente en edades avanzadas, y diferentes estudios poblacionales […]

Pneumococcal vaccine targeting strategy for older adults: Customized risk profiling

Vaccine 32:990-995. Clalit Research Institute, Tel Aviv, Israel BACKGROUND: Current pneumococcal vaccine campaigns take a broad, primarily age-based approach to immunization targeting, overlooking many clinical […]

Prevalence and costs of multimorbidity by deprivation levels in the Basque country: a population based study using health administrative databases

PLoS One 9:e89787. Basque Health Service, Erandio, Bizkaia, Spain; Basque Institute for Healthcare Innovation, Sondika, Bizkaia, Spain; Universidad Complutense de Madrid, Madrid, Spain; Australian National […]

A qualitative study on clinicians’ perceptions about the implementation of a population risk stratification tool in primary care practice of the Basque Health Service

BMC Fam Pract 15:150. Basque Institute for Healthcare Innovation, Bizkaia, Spain BACKGROUND: A prospective Population Risk Stratification (PRS) tool was first introduced in the public […]

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 […]

Efficiency assessment of primary care providers: a conditional nonparametric approach

Eur J Operational Res 240:235-244. Universidad de Extremadura, Badajoz, Spain; Basque Institute for Healthcare Innovation, Sondika, Spain; Osakidetza, Basque Health Service, Erandio, Spain This paper […]

The Ontario MedsCheck Diabetes pharmacist medication review service: a descriptive analysis of service recipients between 2010-2014 using administrative claims data

Canadian Association for Population Therapeutics Conference, November 2015, Toronto, ON, Canada. A MedsCheck Diabetes (MCD) consultation is a pharmacist-led medication review service funded by the […]

Population-level costs and resource utilization of homecare for persons with Alzheimer’s disease

J Popul Ther Clin Pharmacol 21:pe120. Background: The aging population in Ontario is accompanied by an increased incidence and prevalence of Alzheimer’s disease (AD). Given […]

Working well – the Texas demonstration to maintain independence and employment: 18-month outcomes

Journal of Vocational Rehabilitation 34:97-106. Addiction Research Institute, Center for Social Work Research, University of Texas at Austin, Austin, TX, USA Uninsured working adults with […]

Chronic conditions and co-morbidity among residents of British Columbia

Centre for Health Services and Policy Research, University of British Columbia. Centre for Health Services and Policy Research, University of British Columbia, Vancouver, BC, Canada […]

Using health research in policy and practice: case studies from nine countries

New York, NY, USA: Academy Health/Milbank Memorial Fund. Academy Health/Milbank Memorial Fund, New York, NY, USA As the move toward an evidence-based approach to health […]

Description, behavior, use and methodology used to measure case mix in our primary health care system: the Ambulatory Care Groups (ACGs)

Barcelona, Spain: Fundacio Salut, Empresa i Economia. Published in Spanish. Fundacio Salut, Empresa i Economia, Barcelona, Spain No abstract

Analysing performance of primary health care using the ACG case-mix system

Malmo, Sweden: Lund University (doctoral dissertation). Lund University, Malmo, Sweden The overall aim of this thesis was to analyse the importance of co-morbidity level for […]

The epidemiology and outcomes of critical illness in Manitoba

Winnipeg, MB, Canada: Manitoba Centre for Health Policy. Manitoba Centre for Health Policy, Winnipeg, MB, Canada This report was conducted at the Manitoba Centre for […]

Addition of pharmacy cost data improves performance of the Adjusted Clinical Groups predictive model for total health care costs overall and within disease specific groups

Value in Health 7:371. AdvancePCS, Hunt Valley, MD, USA OBJECTIVE: To determine the effect of adding the pharmacy cost data option to the Adjusted Clinical […]

Burden of morbidity in a patient perspective – the case of sick-leave certified patients in primary care

BMC Public Health 9:157. Data on morbidity in Sweden are based on numbers of diagnoses, classified by the WHO system, the International Statistical Classification of […]

Using risk adjustment approaches in child welfare performance measurement: applications and insights from health and mental health settings

Child Youth Serv Rev 32:103-112. Washington University in St. Louis, St. Louis, MO, USA Federal policymaking in the last decade has dramatically expanded performance measurement […]

Predicting the financial risks of seriously ill patients

Sacramento, CA, USA: California Health Care Foundation. In this paper, a Medical Productivity Index (MPI) is proposed as such a metric to capture the value […]

Empirical studies in the economics of health insurance, health, and fertility

Princeton, NJ, USA: Princeton University (doctoral dissertation) Princeton University, Princeton, NJ, USA This thesis is a collection of essays in the economics of health insurance, […]

A simple but efficient approach to the analysis of multilevel data

Health Economics Papers 2013:6. Odense, Denmark: University of Southern Denmark. University of Southern Denmark, Odense, Denmark Much research in health economics revolves around the analysis […]

Adjusted clinical groups: a patient classification system through risk adjustment

Rev Peru Med Exp Salud Publica 30:308-314. Published in Spanish. Directorate of Planning, Badalona Serveis Assistencials SA, Badalona, Spain Adjusted Clinical Groups (ACG) are risk […]

High-Risk Case Identification for Use in Comprehensive Complex Care Management

 High-Risk Case Identification for Use in Comprehensive Complex Care ManagementBecause patients with multiple chronic conditions require proactive, coordinated care management to effectively manage numerous health […]

Population Health Management through Care Coordination and Interventions

Population health management at JHHC represents a comprehensive approach to health care considering the distribution of health outcomes within a population, and the health determinants […]

Casemix and Quality

Hospital Authority Casemix and Quality – Are they rivals or partners? Dr. K.H. Lee

Tuesday-Managing hospitalization risk-Terry and Oberg

Dovetail Managing Hospitalization Risk: Refining Patient Selection in a Care Transitions Program Lara Terry, MD. Jeff Oberg

Monday-US Health Reform-Abrams

Johns Hopkins ACG System Using ACGs to Support Risk Adjusted Premiums within the Health Insurance Exchange Chad Abrams

Monday-Advances in modeling risk-Thibodeau

Medica Leveraging the John Hopkins ACG Tool to Support Total Cost of Care Contracts Peter M. Thibodeau

Implementing the ACG risk within NHS

NHS Airedale, Bradford & Leeds Cluster Information Services Implementing the ACG risk of hospitalization model with NHS data: experiences from Leeds Dr Thomas Mason MA., […]

Using Predictive Modeling to Identify Readmission Risk

Johns Hopkins Bloomberg School of Public Health Using Predictive Modeling to Identify Readmission Risk K. Lemke

Monday(C3)-Geographically Identifying Expanded Diagnosis Clusters in the Hispanic/Latino Population —Thomas Ludden

Geographically Identifying Expanded Diagnosis Clusters in the Hispanic/Latino Population  —Thomas Ludden, Carolinas Healthcare System  

Wednesday(C9)-Swinging from a new tee – towards ‘The Extended Epidemiology’ by analysing the outcome from ACG processing in a County Council in Sweden

Swinging from a new tee – towards ‘The Extended Epidemiology’ by analysing the outcome from ACG processing in a County Council in Sweden —Ulf Börjesson, […]

Care Density: Amy Salls, DST Health Solutions

ACG System DST Health Solutions Care Density Amy Salls

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The ACG System as a Common Language

Chad Abrams, Director of U.S. Operations, ACG System; describes common challenges around the world such as language differences, data quality, turning data into impact, and […]

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Segmentation Case Study

Slough Clinical Commissioning Group (CCG), which covers a population of 143,000 in the UK, used the Johns Hopkins ACG System to conduct a population health analysis that generated several new insights. After just 18 months, unplanned hospitalizations were reduced by 18% and emergency department visits were reduced by 19%.

Incident atrial fibrillation in the emergency department in Ontario: a population-based retrospective cohort study of follow-up care

CMAJ Open 3:E182. Institute for Clinical Evaluative Sciences, Toronto, ON, Canada; University of Toronto, Toronto, ON, Canada BACKGROUND: Continuity of care has been shown to […]

Comprehensive preventive care assessments for adults with intellectual and developmental disabilities in Ontario – Part 2: 2003-2014

Objective To determine if there has been an increase in preventive care among adults with IDD as a result of the publication of the Canadian […]

Association between method of pelvic organ prolapse repair involving the vaginal apex and re-operation: a population-based, retrospective cohort study

Abstract Introduction and hypothesis Vaginal apical suspension is essential for the surgical treatment of pelvic organ prolapse (POP). We aim to evaluate whether the method […]

Patient-reported symptoms following mastectomy alone or lumpectomy plus radiation for early stage breast cancer: a cohort study

Abstract Purpose Studies examining symptom differences between surgeries for breast cancer patients rarely incorporate the effects of adjuvant treatment choice. We sought to understand differences […]

Rapid repeat pregnancy among women with intellectual and developmental disabilities: a population-based cohort study

Abstract   BACKGROUND Rapid repeat pregnancy within 12 months of a live birth is associated with adverse perinatal outcomes. We evaluated the risk for rapid […]

Comparing Survey-Based Frailty Assessment to Medicare Claims in Predicting Health Outcomes and Utilization in Medicare Beneficiaries

Abstract   Objectives To assess two models for the prediction of health utilization and functions using standardized in-person assessments of frailty and administrative claims-based geriatric […]

Association of Care Management Intensity With Healthcare Utilization in an All-Condition Care Management Program

ABSTRACT Objectives: To identify care needs among Medicaid and Medicare patients in an all-condition care management program involving case managers (CMs) and community health workers (CHWs), […]

One-Year Mortality After Emergency Department Visit for Nonfatal Opioid Poisoning: A Population-Based Analysis

Abstract Study objective We aim to characterize the incidence and risk factors for opioid-related and all-cause mortality in the year after an emergency department (ED) […]

Colonoscopy resource availability and its association with the colorectal cancer diagnostic interval: A population‐based cross‐sectional study

Abstract Background Colonoscopy is a key resource used to diagnose colorectal cancer (CRC). This study evaluated the relationship between colonoscopy availability and the length of […]

Variation in care of patients with elderly-onset inflammatory bowel disease in Ontario, Canada: A population-based cohort study

Abstract Background Variation in health care, when not based on patient preference, may result in poorer care. We determined whether variation in health services utilization, […]

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

Impact of Frailty on Clinical Outcomes after Carotid Artery Revascularization

Abstract Objectives : Frailty has been increasingly recognized as an important risk factor for vascular procedures. To assess the impact of frailty on clinical outcomes and […]

Health Status of Females Who Experience Incarceration: A Population-Based Retrospective Cohort Study

Abstract Background People who experience incarceration have poor health across a variety of indicators, but we lack population-level data on the health of females in […]

Concurrent hiatal hernia repair and bariatric surgery: outcomes after sleeve gastrectomy and Roux-en-Y gastric bypass

Abstract Background Hiatal hernias are often repaired concurrently with bariatric surgery to reduce risk of gastroesophageal reflux disease–related complications. Objectives To examine the association between […]

Explanatory Ability of the ACG System Regarding the Utilization and Expenditure of the National Health Insurance Population in Taiwan—A 5-year Analysis

ABSTRACT Background The adjusted clinical group (ACG) is a diagnosis-based case-mix adjustment system, which has been widely evaluated in several countries other than Taiwan. The […]

Impact of Frailty on Clinical and Financial Outcomes Following Minor Lower Extremity Amputation: A Nationwide Analysis

Abstract Objective Frailty has been shown to portend worse outcomes in surgical patients. Our goal was to identify the impact of frailty on outcomes and […]

Predicting Future Health Risk in COPD: Differential Impact of Disease-Specific and Multi-Morbidity-Based Risk Stratification

Abstract Objective Multi-morbidity contributes to mortality and hospitalisation in COPD, but it is uncertain how this interacts with disease severity in risk prediction. We compared […]

A Population-Based Analysis of Long-Term Outcomes Among Older Adults Requiring Unexpected Intensive Care Unit Admission After Cancer Surgery

Abstract Background High-intensity cancer surgery is increasingly common among older adults. However, these patients are at high-risk for unexpected intensive care unit (ICU) admissions after […]

Pain and haemorrhage are the most common reasons for emergency department use and hospital admission in adults following ambulatory surgery: results of a population-based cohort study

Abstract Background Advances in healthcare delivery have allowed for the increase in the number of ambulatory surgery procedures performed in Canada. Despite these advances, patients […]

Intensive Use of Forensic Inpatient Services by People with Intellectual and Developmental Disabilities in Ontario, Canada: Prevalence and Associated Characteristics

Abstract Background People with intellectual/developmental disabilities (IDD) are reportedly intensive users of forensic inpatient services. Methods Using administrative data, we identified people with and without […]

Outcomes of SARS-CoV-2 infection in cancer versus non-cancer-patients: A population-based study in northeastern Italy

Abstract Introduction This study assesses the risk of infection and clinical outcomes in a large consecutive population of cancer and non-cancer patients tested for SARS-CoV-2 […]

The impact of frailty on adjuvant treatment in patients with head and neck free flap reconstruction—A retrospective study using two independent frailty scores

Abstract Objectives Reconstructive surgery may result in prolonged postoperative recovery, especially in frail patients, which in turn may impact delivery of adjuvant therapy. To date, […]

Health Care Utilization among Adult Survivors of Childhood and Adolescent Cancer in Ontario

Abstract Survivors of childhood and adolescent cancers are at increased risk for late effects including subsequent cancer, cardiotoxicities, and poor psychosocial health. Few studies have […]

Differences in health care costs between two social health support programs: findings from a randomized social health integration pilot program

Abstract Introduction More health systems are implementing strategies to understand and address patient social health, also known as social health integration. We examine the impact […]