Columbia subject headings:
Medical care, Cost of--United States--Statistics.
Medical care--United States--Statistics.
Medical economics--United States--Statistics.
Public health--United States--Statistics.
United States--Statistics, Medical.
Harvard subject headings:
Americans--Medical care--Statistics.
Health surveys.
Medical care, Cost of--United States--Statistics
Medical care--Statistics.
Medical care--United States--Statistics.
Medical economics--United States--Statistics.
Medicare--Economic aspects.
Public health--United States--Statistics
United States--Statistics, Medical.
Princeton subject headings:
Medical care, Cost of--United States--Statistics.
Medical care--United States--Statistics.
Medical economics--United States--Statistics.
Public health--United States--Statistics.
Statistics.
United States--Statistics, Medical.