A variable that we purposefully change or manipulate is called the independent variable. The thing that changes in response is called the dependent variable. This creates a cause and effect relationship.
Medicare Eligibility Requirements. To be entitled to Medicare, you must be a U.S. citizen or a permanent legal resident, and answer yes to at least one (1) of the following questions:
Eligibility requirements for Medicaid vary by state, and you should check with your state Medicaid office (or website) for more information on that and for enrollment information. The difference between Medicare and Medicaid in a nutshell, then, is this: Medicare is an insurance program primarily for older Americans. It's the same for all Americans, requires them to share some costs, and is administered federally.