The main difference between the four public health care systems is the patient cost for prescriptions.
Including people in these categories, more than 39 million Americans are covered for prescriptions.
The study did find that women were more likely to buy them over the counter than to ask their doctors for prescriptions.
But patients hoping for prescriptions may pressure their doctors to write them.
That's $13,724 a year to keep the heat on, pay for prescriptions, cover the mortgage, and provide food.
Americans, through the high prices they pay for prescriptions, are supporting the research and development from which the whole world benefits.
He did not know how many requests for prescriptions the company handled.
Since the 1980s new methods of marketing for prescription drugs to consumers have become important.
Other companies have annual caps of $500 to $1,000 for prescriptions, which many elderly use up within several months.
A Medicare beneficiary would still be expected to pay for prescriptions up to $250 a year.