Health Economics

Intermediate

Health economics is a branch of economics that studies how scarce resources are allocated in the production, distribution, and consumption of health and healthcare. It applies economic theory, models, and empirical techniques to analyze the behavior of individuals, healthcare providers, insurers, and governments in health-related markets. Unlike standard markets, healthcare markets are characterized by pervasive information asymmetries, externalities, moral hazard, and the ethical imperative that access to care should not be determined solely by ability to pay, making health economics a uniquely complex and policy-relevant field.

Central to health economics is the evaluation of costs and outcomes associated with medical interventions, public health programs, and health system designs. Tools such as cost-effectiveness analysis, cost-benefit analysis, and quality-adjusted life years (QALYs) allow analysts to compare the value delivered by competing uses of limited healthcare budgets. These methods inform decisions ranging from which drugs a national formulary should cover to how much a society should invest in preventive care versus curative treatment. Health economists also study the determinants of health beyond clinical care, including socioeconomic status, education, environmental factors, and behavioral choices.

The field has grown in policy importance as countries around the world confront rising healthcare expenditures driven by aging populations, technological innovation, and the growing burden of chronic disease. Health economists contribute to debates on universal health coverage, pharmaceutical pricing, hospital payment reform, and the design of health insurance markets. Whether evaluating the Affordable Care Act in the United States, single-payer models in Canada and the United Kingdom, or social health insurance in Germany and Japan, health economics provides the analytical framework for understanding trade-offs among efficiency, equity, and quality in health systems.

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Key Concepts

A measure of disease burden that accounts for both the quality and quantity of life lived. One QALY equals one year of life in perfect health. QALYs allow comparison of interventions across different diseases by combining survival and health-related quality of life into a single index.

Example

A treatment that extends life by 2 years at a quality-of-life score of 0.5 yields 1.0 QALY, while a different treatment offering 1 year at full health also yields 1.0 QALY, making them equivalent by this measure.

An economic evaluation method that compares the relative costs and health outcomes of two or more interventions. Results are typically expressed as an incremental cost-effectiveness ratio (ICER), calculated as the difference in costs divided by the difference in health outcomes.

Example

If Drug A costs $50,000 and produces 3 QALYs while Drug B costs $30,000 and produces 2 QALYs, the ICER of Drug A relative to Drug B is ($50,000 - $30,000) / (3 - 2) = $20,000 per QALY gained.

The tendency of insured individuals to consume more healthcare services than they would if they bore the full cost, because insurance reduces the out-of-pocket price at the point of care. This overconsumption can drive up premiums and total system costs.

Example

The RAND Health Insurance Experiment (1974-1982) found that people with free healthcare used roughly 30% more services than those with cost-sharing, yet for most people, the additional utilization did not improve health outcomes.

A market failure that occurs when individuals with higher health risks are more likely to purchase insurance than healthier individuals, leading to an insured pool that is sicker and more costly than the general population. This can cause a 'death spiral' of rising premiums.

Example

If a health insurer cannot distinguish between high-risk and low-risk applicants, it must charge an average premium. Healthy individuals may find this too expensive and drop out, leaving a sicker pool, which forces premiums even higher.

A systematic evaluation of the properties, effects, and impacts of health technologies and interventions. HTA considers clinical effectiveness, cost-effectiveness, and broader social, ethical, and organizational implications to inform coverage and reimbursement decisions.

Example

The UK's National Institute for Health and Care Excellence (NICE) uses HTA to decide whether the National Health Service should fund new drugs, typically applying a willingness-to-pay threshold of 20,000 to 30,000 pounds per QALY.

Costs or benefits of health-related activities that affect third parties who are not directly involved in the transaction. Health externalities can be positive (vaccination protecting the unvaccinated through herd immunity) or negative (pollution causing respiratory disease in bystanders).

Example

When an individual gets vaccinated against measles, they not only protect themselves but also reduce the risk of transmission to infants too young to be vaccinated and immunocompromised individuals who cannot receive vaccines.

A measure of how responsive the quantity of healthcare demanded is to changes in price, income, or other factors. Healthcare demand tends to be relatively inelastic for emergency and life-saving services but more elastic for elective and preventive care.

Example

Studies consistently find that the price elasticity of demand for healthcare is around -0.2, meaning a 10% increase in out-of-pocket costs leads to roughly a 2% reduction in utilization on average.

A phenomenon in healthcare where providers, who possess more medical knowledge than patients, can influence the level of demand for their own services. Because patients rely on physicians for diagnosis and treatment recommendations, doctors may recommend more services than are strictly necessary.

Example

Research has shown that regions with more surgeons per capita tend to have higher rates of elective surgery, suggesting that the supply of physicians can independently influence the volume of procedures performed.

A measure of overall disease burden expressed as the number of years lost due to ill-health, disability, or early death. One DALY represents one lost year of healthy life. Unlike QALYs, which measure health gained, DALYs measure health lost.

Example

The Global Burden of Disease Study uses DALYs to rank health problems worldwide. In 2019, ischemic heart disease was the leading cause of DALYs globally, accounting for approximately 182 million DALYs.

A health system goal ensuring that all people have access to needed health services of sufficient quality without suffering financial hardship. UHC encompasses the full spectrum of services from health promotion and prevention to treatment, rehabilitation, and palliative care.

Example

Thailand achieved near-universal health coverage in 2002 through its Universal Coverage Scheme, which provides comprehensive benefits to all citizens for a copayment of 30 baht (roughly $1) per visit, funded primarily through general taxation.

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Curriculum alignment— Standards-aligned

Grade level

College+

Learning objectives

•Analyze cost-effectiveness ratios and quality-adjusted life years to evaluate competing healthcare interventions and resource allocation decisions
•Apply demand elasticity and moral hazard concepts to predict consumer behavior under different health insurance structures
•Evaluate market failures in healthcare delivery including information asymmetry, externalities, and the role of government regulation
•Compare single-payer, multi-payer, and market-based healthcare financing models using efficiency and equity criteria

Recommended Resources

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Books

The Economics of Health and Health Care

by Sherman Folland, Allen Goodman, and Miron Stano

Health Economics

by Charles E. Phelps

Pricing the Priceless: A Health Care Conundrum

by Joseph P. Newhouse

Health Economics: An International Perspective

by Barbara McPake and Charles Normand

An Introduction to Health Economics

by Lorna Guinness and Virginia Wiseman

Courses

Health Economics and Policy

CourseraEnroll

Global Health Economics

edXEnroll

Pharmaceutical and Medical Device Innovations

MIT OpenCourseWareEnroll

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Business & Finance

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Intermediate

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Interdisciplinary

Biostatistics

The application of statistical methods to biological, medical, and public health data, enabling evidence-based conclusions in the life sciences.

Intermediate

Health Economics

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Glossary

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Key Concepts

Quality-Adjusted Life Year (QALY)

Cost-Effectiveness Analysis (CEA)

Moral Hazard in Health Insurance

Adverse Selection

Health Technology Assessment (HTA)

Externalities in Health

Elasticity of Demand for Healthcare

Supplier-Induced Demand

Disability-Adjusted Life Year (DALY)

Universal Health Coverage (UHC)

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Learning objectives

Recommended Resources

Books

The Economics of Health and Health Care

Health Economics

Pricing the Priceless: A Health Care Conundrum

Health Economics: An International Perspective

An Introduction to Health Economics

Courses

Health Economics and Policy

Global Health Economics

Pharmaceutical and Medical Device Innovations

Related Topics

Microeconomics

Public Health

Behavioral Economics

Public Policy

Biostatistics