Skip to Main Content
Brown University
School of Public Health Brown University

Center for Health System Sustainability

Search Menu

Site Navigation

  • Home
  • About
  • Research
    • Health System Performance Assessment
    • Improving Care Delivery
    • Pharma Policy
    • Health & Wealth
  • People
  • Network
  • Publications
  • News
  • Impact
  • Events
    • Past Events
Search
Center for Health System Sustainability

Our Data Network

International Collaborative for Costs, Outcomes, and Needs in Care (ICCONIC)

Our Data Network

International Collaborative for Costs, Outcomes, and Needs in Care (ICCONIC)

Across health systems, high-need, high-cost (HNHC) patients tend to constitute a relatively small segment of the population while accounting for a disproportionately large share of healthcare expenditures. Little is known, however, about how patterns of healthcare utilization, spending, and outcomes for HNHC patients vary across health systems.

The ICCONIC effort is a partnership between collaborators from 18 countries in North America, Europe, Asia, and the Pacific. ICCONIC is committed to advancing the development of methods and measures in comparative health systems research. The collaborative's ultimate objective is to increase the availability of patient-level data, leverage data linkages to conduct cross-country analysis, and provide policymakers with insights into how different care strategies may influence care quality, cost, and outcomes.

Visit ICCONIC

The International Collaborative on Costs, Outcomes and Needs in Care (ICCONIC) consists of 18 country partners from North America, Europe and the Pacific who are committed to answering critical questions about this patient population, often understudied in the international setting.

Find out more

106,567,043 lives across countries

United States

Visit Page

Australia

Visit Page

Belgium

Visit Page

Canada

Visit Page

Denmark

Visit Page

England

Visit Page

Finland

Visit Page

France

Visit Page

Germany

Visit Page

Netherlands

Visit Page

New Zealand

Visit Page

Singapore

Visit Page

South Korea

Visit Page

Spain

Visit Page

Sweden

Visit Page

Switzerland

Visit Page

OECD

Visit Page

outputs of this collaborative

BMC Health Services Research

International comparison of equity gradients in hospitalizations for ambulatory care sensitive conditions

March 23, 2026
Hospitalizations for Ambulatory Care Sensitive Conditions (ACSCs) are thought to be avoidable with effective preventive care and early disease management, usually delivered in community-based ambulatory care settings. These hospitalizations are both costly and sensitive to the socioeconomic situation of patients. Understanding whether different health systems mitigate the sensitivity of ACSCs to socioeconomic gradients may direct attention to equity-improving approaches to ambulatory health care. This study sought to identify differences in the gradient of Ambulatory Care Sensitive Conditions (ACSC) relative to socioeconomic status across nine countries, namely Australia, Canada, England, Finland, France, New Zealand, Spain, Switzerland, and the United States (US).
Read Article
European Journal of Public Health

Examining systemic differences in mortality after hip repair: a comparative analysis of 30- and 180-day adjusted mortality rates in five health systems

June 26, 2025
Outcomes after a hip repair in the older adult population are highly dependent on patients’ characteristics. However, contextual factors such as the hospital of treatment may have an impact not sufficiently studied. We aimed to elicit the effect of hospital providers on all-cause-adjusted mortality rates after hip fracture repair. Observational study on virtually all potentially eligible hip fracture patients treated in 2240 hospitals from Ontario (Canada), Aragon (Spain), Finland, Sweden, and the USA (40 states). The primary endpoint was the risk-adjusted all-cause mortality after hip repair measured 30 days and 180 days after surgery. Following a federated approach, GAMM-logit models were run for each region. Median odds ratio (MOR) were estimated to elicit the variation at hospital level. The study included 535 519 hip repairs. The overall predicted 30-day adjusted mortality rate was 40.5 per 1000 hip repair episodes; 136.3 per 1000 hip repair episodes in the 180-day adjusted mortality rate. 30- and 180-day adjusted mortality rates were larger within the regions than across regions. Variance in patients’ mortality at the hospital provider accounted for MOR: 1.43 in 30-day mortality and MOR: 1.35 in 180-day mortality. Beyond differences in the individual risk of death, our study found wide systemic variations in mortality rates in older adult patients exposed to hip fracture repair attributable to the hospital of treatment. Our results call for a reorientation of care pathways after hip repair in frail patients, both in the short- and the long-term.
Read Article
Health Services Research

International comparison of hospitalizations and emergency department visits related to mental health conditions across high-income countries before and during the COVID-19 pandemic

October 1, 2024
The study underscores the importance of understanding and addressing variation in acute care utilization for mental health conditions, including the differential effect of COVID-19, across different health care systems. Further research is needed to elucidate the extent to which factors such as workforce capacity, access barriers, financial incentives, COVID-19 preparedness, and community-based care may contribute to these variations.
Read Article
The Guardian

England has highest death rates of older patients in western world, study finds

November 10, 2021
ICCONIC findings featured in a Guardian article.
Read Article
Health Services Research

International comparison of patient care trajectories: Insights from the ICCONIC project

November 10, 2021
Health systems across high-income countries have similar goals, which include maximizing quality of care, offering services responsive to patient needs, and ensuring efficient health care delivery. Health systems also face similar challenges, such as changing demographics, limited national resources, and ongoing rising health care costs.3 In response, national policy makers are working to identify effective strategies to address these challenges, which are heavily influenced by existing health system features. A group of particular concern is the growing number of high-need, high-cost (HNHC) patients, a clinically diverse set of patients with multiple medical needs, frailty, and multimorbidity. While constituting a relatively small proportion of the population, these patients account for a disproportionate share of medical expenditures across health systems.
Read Article
The Health Foundation

Caring for older patients with complex needs: How does England compare with 11 OECD countries?

November 10, 2021
Report of ICCONIC research to the Health Foundation.
Read Article
Health Services Research

A methodology for identifying high-need, high-cost patient personas for international comparisons

November 10, 2021
Although there are cross-country differences in the availability and structure of data sources, countries had the ability to effectively identify comparable HNHC personas for international study. This work serves as the methodological paper for six accompanying papers examining differences in spending, utilization, and outcomes for these personas across countries.
Read Article
The Commonwealth Fund

Medicare Patients Pay More for Drugs Than Older Adults in Other Countries; Congress Has an Opportunity to Move Forward

September 30, 2021
ICCONIC work featured in a CMWF To The Point blog.
Read Article
Health Services Research

International comparison of spending and utilization at the end of life for hip fracture patients

September 7, 2021
Across seven countries, we find important variations in end-of-life care for patients who sustained a hip fracture, with some differences explained by sex and age. Our work sheds important insights that may help ongoing health policy discussions on equity, efficiency, and reimbursement in health care systems.
Read Article
Health Services Research

Within and across country variations in treatment of patients with heart failure and diabetes

September 7, 2021
Distribution of health care consumption in different settings varies within countries, but there are also some common treatment patterns across all countries. Clinicians and policy makers need to look into these differences in care utilization by sex and care setting to determine whether they are justified or indicate suboptimal care.
Read Article
Health Services Research

An international comparison of long-term care trajectories and spending following hip fracture

August 11, 2021
In this comparison of LTC services following a hip fracture, we found international differences in total use of institutional and noninstitutional care, longevity, and total expenditures. There exist opportunities to organize postacute care differently to maximize independence and mitigate costs.
Read Article
Health Services Research

Differences in health outcomes for high-need high-cost patients across high-income countries

August 11, 2021
Across 11 countries, there are meaningful differences in health system outcomes for two types of patients.
Read Article
Brown University School of Public Health
Providence RI 02903 401-863-3375 public_health@brown.edu

Quick Navigation

  • Newsletter
  • Visit Brown
  • Campus Map

Footer Navigation

  • Accessibility
  • Careers at Brown
Give To Brown

© Brown University

School of Public Health Brown University
For You
Search Menu

Mobile Site Navigation

    Mobile Site Navigation

    • Home
    • About
    • Research
      • Health System Performance Assessment
      • Improving Care Delivery
      • Pharma Policy
      • Health & Wealth
    • People
    • Network
    • Publications
    • News
    • Impact
    • Events
      • Past Events
All of Brown.edu People
Close Search