How and why do countries differ in their governance and financing-related administrative expenditure in health care? An analysis of OECD countries by health care system typology.

These differences can partially be explained because multi-payer and voluntary private health insurance schemes require additional administrative functions and enjoy less economies of scale. Studies in hospitals and primary care indicate similar differences in administrative costs across health system typologies at the mesolevel and microlevel of health care delivery, which warrants more research on total administrative costs at all the levels of health systems.