The IHME Disease Expenditure project builds from the Global Burden of Disease to arrive at a set of collectively exhaustive and mutually exclusive conditions specific to US health spending. One hundred eighty-three data sources and 2.9 billion patient records are used to fill in the demographic and epidemiological information needed to understand the spending and time trends associated with each condition.
To account for areas of spending not associated with specific diseases, we modify the GBD categories to include non-disease groupings such as well adult care, well pregnancy care, and other health-system-relevant expenditure areas.
To split health spending into disease and injury categories, we rely heavily on two types of data:
- Microestimates: These data come from household surveys, facility surveys, administrative and claims data, health management information systems, censuses, and national inventories.
- Macroestimates: National health expenditure data to provide overarching country-level estimates. These data generally come from National Health Accounts (NHAs).