29 May 2019 - Discussions of the cost effectiveness of medical services often are couched in the framework of a global budget constraint; for example, a national health insurance system that must balance government expenditures on healthcare services against other government spending priorities.
In those systems, the global budget constrains the treatment decisions of healthcare providers, and at least theoretically, there is a mechanism through which coverage of a new highly cost-effective type of service results in the reduced coverage of another type of service that is on the margin of what is deemed to be cost effective.
In the US, however, 55.7% of the population received health insurance through employment-based health plans in 2016.