The insurer pays for medical intervention such as physiotherapy instead of sending a cheque.
Evidence for the importance of an intervention such as methadone comes from a variety of sources.
There are lots of third factors, including government intervention -- such as vaccinations, clean water.
Q: What about other types of intervention, such as Alcoholics Anonymous?
In randomized evaluations, individuals are randomly selected to receive an intervention, such as health insurance.
These models are a useful starting point but do not account for forest age or silvicultural intervention such as thinning.
Without a market intervention, such as a cap on childcare prices, the UK risks the same effect.
Macon County has been plagued by troublesome state intervention such as Gov. Wallace's hampering of school desegregation.
Without government intervention, such as research subsidies or an effective patent system, too few resources will be devoted to research.
He added: "There should be more evidence before we go for a nationwide intervention such as screening tests.
That creates the potential for welfare-improving government intervention, such as a tax on pollution.
