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Bibliography

The Johns Hopkins ACG® System Bibliography provides links to more than 900 papers and reports from across the globe detailing various studies utilizing the ACG System in a variety of locations, populations, and innovative applications.

Please use the below search box to find articles on specific topics or keywords. You can also use the filters below to refine further.

Creating a Cost-map From Claims Data to Guide Improvement Actions for Children With Asthma

Abstract Purpose It is difficult to reduce cost and improve quality without knowledge pertaining to the distribution of expenses in the population in question. We […]

Association of State Insulin Out-of-Pocket Caps With Insulin Cost-Sharing and Use Among Commercially Insured Patients With Diabetes: A Pre–Post Study With a Control Group

Abstract Background Twenty-five states have implemented insulin out-of-pocket (OOP) cost caps, but their effectiveness is uncertain. Objective To examine the effect of state insulin OOP […]

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 […]

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

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

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 […]

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 […]

Surgeon factors but not hospital factors associated with length of stay after colorectal surgery – A population based study

Abstract Aim Length of stay (LOS) after colorectal surgery (CRS) is a significant driver of healthcare utilization and adverse patient outcomes. To date, there is […]

Development and validation of predictive models for unplanned hospitalization in the Basque Country: analyzing the variability of non-deterministic algorithms

Abstract Background The progressive ageing in developed countries entails an increase in multimorbidity. Population-wide predictive models for adverse health outcomes are crucial to address these […]

Association Between Frailty, 30-day Unplanned Readmission and Mortality After Hospitalization for Heart Failure: Results From the Nationwide Readmissions Database

Abstract Objectives: This study examined how frailty in traditional risk-adjusted models could improve the predictability of unplanned 30-day readmission and mortality among heart failure patients. […]

Identifying individuals with complex and long-term health-care needs using the Johns Hopkins Adjusted Clinical Groups System: A comparison of data from primary and specialist health care

Abstract Aims: This study aimed to present the Johns Hopkins Adjusted Clinical Groups (ACG) System risk stratification profile of a total adult population of somatic […]

Using the Johns Hopkins ACG Case-Mix System for population segmentation in a hospital-based adult patient population in Singapore

Abstract Objective Population health management involves risk characterisation and patient segmentation. Almost all population segmentation tools require comprehensive health information spanning the full care continuum. […]

Performance of administrative database frailty instruments in predicting clinical outcomes and cost for patients undergoing transcatheter aortic valve implantation: a historical cohort study

Abstract Purpose Frailty instruments may improve prognostic estimates for patients undergoing transcatheter aortic valve implantation (TAVI). Few studies have evaluated and compared the performance of […]

Social Determinants of Health Influence Future Health Care Costs in the Medicaid Cohort of the District of Columbia Study

Abstract Context Social determinants of health are an important predictor of future health care costs but little is known about their impact on Medicaid spending. […]

Assessing the Added Value of Vital Signs Extracted from Electronic Health Records in Healthcare Risk Adjustment Models

Abstract Objective Patient vital signs are related to specific health risks and outcomes but are underutilized in the prediction of health-care utilization and cost. To […]

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, […]

Relationship of frailty with excess mortality during the COVID-19 pandemic: a population-level study in Ontario, Canada

Abstract Background There is a paucity of the literature on the relationship between frailty and excess mortality due to the COVID-19 pandemic. Methods The entire […]

Impact of Social Needs in Electronic Health Records and Claims on Health Care Utilization and Costs Risk-Adjustment Models Within Medicaid Population

Abstract Patients enrolled in Medicaid have significantly higher social needs (SNs) than others. Using claims and electronic health records (EHRs) data, managed care organizations (MCOs) […]

The effect of disease co-occurrence measurement on multimorbidity networks: a population-based study

Abstract Background Network analysis, a technique for describing relationships, can provide insights into patterns of co-occurring chronic health conditions. The effect that co-occurrence measurement has […]

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 […]

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

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

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 […]

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 […]

Comparing and validating medication complexity from insurance claims against electronic health records

ABSTRACT BACKGROUND Patient effort to comply with complex medication instructions is known to be related to nonadherence and subsequent medical complications or health care costs. […]

Survival effects of time to surgery for Stage I lung cancer: A population-based study

Abstract Objectives To examine the impact of time to surgery (TTS) on survival among patients with stage I non-small cell lung cancer (NSCLC). Methods All […]

Matching Special Olympics registration data with administrative health databases: Feasibility and health status differences in children and youth with IDD

Abstract Background Children and youth with intellectual and developmental disabilities (IDD) experience health disparities. What is unknown is if data collected from children and youth […]

Intellectual/developmental disabilities among people incarcerated in federal correctional facilities in Ontario, Canada: Examining prevalence, health and correctional characteristics

Abstract Background There is little research with people who experience intellectual/developmental disabilities and imprisonment. Methods The study linked health and correctional data to examine prevalence […]

Evaluating the predictive value of comorbidity indices in pituitary surgery: a mixed-effects modeling study using the Nationwide Readmissions Database

Abstract OBJECTIVE Although pituitary adenomas (PAs) are common intracranial tumors, literature evaluating the utility of comorbidity indices for predicting postoperative complications in patients undergoing pituitary […]

Improving patient well-being in the United States through care coordination interventions informed by social determinants of health

Abstract Health and well-being are promoted when primary care teams partner with patients and provide care coordination to mitigate risks and promote optimal health. Identification […]

High-Deductible Health Plans Paired With Health Savings Accounts Increased Medication Cost Burden Among Individuals With Bipolar Disorder

ABSTRACT Objective High-deductible health plans paired with health savings accounts (HSA-HDHPs) require substantial out-of-pocket spending for most services, including medications. We examined effects of HSA-HDHPs […]

Effectiveness of COVID-19 vaccines against symptomatic SARS-CoV-2 infection and severe outcomes with variants of concern in Ontario

Abstract SARS-CoV-2 variants of concern (VOC) are more transmissible and may have the potential for increased disease severity and decreased vaccine effectiveness. We estimated the […]

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 […]

Impact of Frailty on Hospital Outcomes Among Patients with Lymphoid Malignancies Receiving Autologous Hematopoietic Stem Cell Transplantation in the United States

Abstract Background Frailty could affect outcomes of autologous hematopoietic stem cell transplantation (aHSCT). This study sought to examine the effects of frailty on hospital outcomes […]

Patterns Of Multimorbidity Of Patients In Geriatric Care – A Register-Based Cohort Study In Sweden

Abstract Background Patients in geriatric care display a high degree of multimorbidity. We aimed to explore and visualise various patterns of multimorbidity in a person-oriented […]

COVID-19 Hospitalizations, Intensive Care Unit Stays, Ventilation, and Death Among Patients With Immune-mediated Inflammatory Diseases Compared to Controls

Abstract Objective To investigate coronavirus disease 2019 (COVID-19) hospitalization risk in patients with immune-mediated inflammatory diseases (IMIDs) compared with matched non-IMID comparators from the general […]

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 […]

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

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

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. […]

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 […]

Opioid Use after Nephrectomy for Kidney Cancer in Ontario: A Population-Based Study

Abstract Objective To compare the odds of early and prolonged post-operative opioid use in patients undergoing minimally invasive surgery (MIS) versus open surgery for nephrectomy. […]

Small steps, strong shield: directly measured, moderate physical activity in 65 361 adults is associated with significant protective effects from severe COVID-19 outcomes

Abstract Objective To determine the association between directly measured physical activity and hospitalisation, intensive care unit (ICU) admission, ventilation and mortality rates in patients with […]

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 […]

Cohort study of team-based care among marginalized people who use drugs in Ottawa

Abstract Objective To describe team-based care use among a cohort of people who use drugs (PWUD) and to determine factors associated with receipt of team-based […]

Time since prior fracture affects mortality at the time of clinical assessment: a registry‑based cohort study

Abstract Summary Fractures are associated with increased long-term mortality in patients surviving to undergo baseline DXA. Notably, excess mortality risk does not decline with increasing […]

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 […]

Patient Service Utilization Among Individuals with Co‑occurring Disorders: A Comparison of Two Models of Care Coordination

Abstract Background Healthcare systems have increasingly adopted integrated care models with demonstrated effectiveness. However, few studies examine integrated care for individuals with co-morbid mental illness […]

Analysis of Platelet Count and New Cancer Diagnosis Over a 10-Year Period

Abstract Importance Individuals with cancer often have an elevated platelet count at the time of diagnosis. The extent to which an elevated platelet count is […]

The effect of frailty on post-operative outcomes and health care expenditures in patients treated with partial nephrectomy

Abstract Objective To examine the effect of frailty on short-term post-operative outcomes and total hospital charges (THCs) in patients with non-metastatic renal cell carcinoma, treated […]

Impact of a patient-centered care model implemented in public health facilities in Chile: A real world evidence evaluation

Abstract Objective Health systems face multimorbidity as the leading cause of the burden of disease and demand for healthcare services. Although non-communicable diseases are well […]

Pre-operative wait times in high-grade non-endometrioid endometrial cancer: Do surgical delays impact patient survival?

Abstract Objective Practice guidelines advocating for regionalization of endometrial cancer surgery to gynecologic oncologists practicing in designated gynecologic oncology centres were published in Ontario in […]

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 […]

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 […]

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 […]

Emergency department use and hospital admission in children following ambulatory surgery: a retrospective population-based cohort study

ABSTRACT Introduction Paediatric ambulatory surgery (same day surgery and planned same day discharge) is more frequently being performed more in Canada and around the world; […]

The receipt of information by family physicians about their patient’s emergency department visits: a record linkage study of electronic medical records to health administrative data

Abstract Background Canadians are known to be frequent users of emergency department (ED) care. However, the exchange of information from ED visits to family physicians […]

Periodic screening for breast and cervical cancer in women with diabetes: a population-based cohort study

Abstract Purpose Diabetes is associated with poorer cancer outcomes. Screening for breast and cervical cancer is recommended by clinical guidelines; however, utilization of these tests […]

Primary Care Continuity andWait Times to Receiving Breast Cancer Chemotherapy: A Population-Based Retrospective Cohort Study Using CanIMPACT Data

Abstract Background Wait times to chemotherapy are associated with morbidity and mortality in breast cancer patients; however, it is unclear how primary care physician (PCP) continuity […]

The clinical impact of frailty on the postoperative outcomes of patients undergoing gastrectomy for gastric cancer: a propensity-score matched database study

Abstract Background Frailty aggregates a composite of geriatric and elderly features that is classified into a singular syndrome; literature thus far has proven its influence […]

New Opioid Use and Risk of Emergency Department Visits Related to Motor Vehicle Collisions in Ontario, Canada

Abstract Importance Opioids can impair motor skills and may affect the ability to drive; however, the association of opioid use with driving ability is not […]

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

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

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 […]

Indicators of publicly funded prescription opioid use among persons with traumatic spinal cord injury in Ontario, Canada

Abstract Objective To describe the proportion and identify predictors of community-dwelling individuals with traumatic spinal cord injury (TSCI) who were dispensed ≥1 publicly funded opioid […]

Association Between Exposure of Children to General Anesthesia and Autism Spectrum Disorder

Abstract Objective This study tested the hypothesis that exposure of children prior to their third birthday to procedures requiring general anesthesia is associated with an […]

Prevalence, determinants, and outcomes of SARS-COV-2 infection among cancer patients. A population-based study in northern Italy

Abstract Background It is well established that cancer patients infected with SARSCoV-2 are at particularly elevated risk of adverse outcomes, but the comparison of SARS-CoV-2 […]

Second and later-line erlotinib use in non-small cell lung cancer: real world outcomes and practice patterns overtime in Canada

Abstract Background In Canada, epidermal growth factor receptor (EGFR) inhibitor therapies in advanced non-small cell lung cancer (NSCLC) were initially approved regardless of EGFR status. The purpose […]

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 […]

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

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

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 […]

Type 1 diabetes prevalence and incidence rates in the pediatric population of Veneto Region (Italy) in 2015–2020

Abstract The prevalence of Type 1 Diabetes (T1D) in the Veneto Region (Italy) in the 2015–2020 years was 152.5/100,000 subjects and the incidence 19.7/100,000 person-years. Accordingly, Veneto Region […]

Association of Surgical Experience With Risk of Complication in Total Hip Arthroplasty Among Patients With Severe Obesity

Abstract Importance Severe obesity is a risk factor for major early complications after total hip arthroplasty (THA). Objective To determine the association between surgeon experience […]

Improving medication adherence and effective prescribing through a patient-centered prescription model in patients with multimorbidity

Abstract Purpose This study aimed to assess the impact of the patient-centered prescription (PCP) model in medication adherence and effective prescribing in patients with multimorbidity. […]

Real-world Safety of Bevacizumab with First-line Combination Chemotherapy in Patients with Metastatic Colorectal Cancer: Population-based Retrospective Cohort Studies in Three Canadian Provinces

Abstract Aims To examine the real-world safety of adding bevacizumab to first-line irinotecan-based chemotherapy for patients with metastatic colorectal cancer (mCRC). Materials and methods Patients diagnosed with CRC in […]

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 […]

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 […]

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 […]

Development of measurable criteria to identify and prioritize patients for inclusion in comprehensive medication management programs within primary care settings

ABSTRACT BACKGROUND Pharmacists optimize medication use and ensure the safe and effective delivery of pharmacotherapy to patients using comprehensive medication management (CMM). Identifying and prioritizing […]

Development of measurable criteria to identify and prioritize patients for inclusion in comprehensive medication management programs within primary care settings

ABSTRACT BACKGROUND Pharmacists optimize medication use and ensure the safe and effective delivery of pharmacotherapy to patients using comprehensive medication management (CMM). Identifying and prioritizing […]

How long does it take patients to find a new primary care physician when theirs retires: a population-based, longitudinal study

Abstract Background The retirement of a family physician can represent a challenge in accessibility and continuity of care for patients. In this population-based, longitudinal cohort […]

Impact of High Deductible Health Plans on Diabetes Care Quality and Outcomes: Systematic Review

Abstract Objective High deductible health plans (HDHPs) were introduced as a mechanism to reduce healthcare spending by incentivizing patients to be more cost-conscious while making […]

A systematic review of risk stratification tools internationally used in primary care settings

Abstract Background and Aims In our current healthcare situation, burden on healthcare services is increasing, with higher costs and increased utilization. Structured population health management […]

Long-term risk of subsequent major osteoporotic fracture and hip fracture in men and women: a population-based observational study with a 25-year follow-up

Abstract Summary The risk of subsequent major osteoporotic and hip fracture following an initial fracture was increased in both sexes over 25 years, with modest […]

Guideline interval: A new time interval in the diagnostic pathway for symptomatic cancer

Abstract Background: A standard measure of the cancer diagnostic pathway, diagnostic interval, is the time from “first presentation of cancer” to diagnosis. Cancer presentation may be […]

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 […]

High prevalence of comorbidities at diagnosis in immigrants with multiple sclerosis

Abstract Background Multiple sclerosis (MS) has been associated with certain comorbidities in general population studies, but it is unknown how comorbidity may affect immigrants with […]

Early postoperative follow-up reduces risk of late severe nutritional complications after Roux-En-Y gastric bypass: a population based study

Abstract Background Severe nutritional complications can occur following Roux-en-Y gastric bypass (RYGB). Adherence to follow-up visits can reduce the risk of many bariatric surgery complications, […]

Congestive heart failure and comorbidity as determinants of colorectal cancer perioperative outcomes

Abstract Objective There has been an increase in surgical interventions in frailer elderly with concomitant chronic diseases. The purpose of this paper was to evaluate […]

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 […]

Inequities in access to primary care among opioid recipients in Ontario, Canada: A population-based cohort study

Abstract Background Stigma and high-care needs can present barriers to the provision of high-quality primary care for people with opioid use disorder (OUD) and those […]

Association between Dysphagia and Surgical Outcomes across the Continuum of Frailty

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

How different combinations of comorbidities affect healthcare use by elderly patients with obstructive lung disease

Abstract Objective Previous research had shown the number of comorbidities is a major factor influencing the burden of care for elderly patients with obstructive lung […]

Impact of Neighborhood Social and Environmental Resources on Medicaid Spending

Abstract Introduction In an era of COVID-19, Black Lives Matter, and unsustainable healthcare spending, efforts to address the root causes of health are urgently needed. […]

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 […]

Management and outcomes of patients with chronic obstructive lung disease and lung cancer in a public healthcare system

Abstract Hypothesis There is limited data on the care and outcomes of individuals with both chronic obstructive pulmonary disease (COPD) and lung cancer, particularly in […]

Controller Medication Use and Exacerbations for Children and Adults With Asthma in High-Deductible Health Plans

Abstract Importance High-deductible health plans (HDHPs) are increasingly common and associated with decreased medication use in some adult populations. How children are affected is less […]

Delay of Pregnancy Among Physicians vs Nonphysicians

Abstract Importance Women physicians may delay childbearing and experience childlessness more often than nonphysicians, but existing knowledge is based largely on self-reported survey data. Objective […]

Systematic review on the instruments used for measuring the association of the level of multimorbidity and clinically important outcomes

ABSTRACT Objectives There are multiple instruments for measuring multimorbidity. The main objective of this systematic review was to provide a list of instruments that are […]

Partial nephrectomy in frail patients: Benefits of robot-assisted surgery

Abstract Background To compare the effect of robot-assisted (RAPN) vs. open (OPN) partial nephrectomy on short-term postoperative outcomes and total hospital charges in frail patients […]

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

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

Analysis of the relationship between surgeon procedure volume and complications after total knee arthroplasty using a propensity-matched cohort study

Abstract Objectives This study aimed to identify a threshold in annual surgeon volume associated with increased risk of revision (for any cause) and deep infection […]

Health care service use and costs for a cohort of high-needs elderly diabetic patients

Abstract Aims To describe the impact of diabetes comorbidities on the health care services use and costs of a cohort of elderly patients with diabetes […]

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 […]

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