From the Agency for Healthcare Research and Quality, Statistical Brief # 144, Overview of Hospital Stays in the United States, 2010:
The total number of hospital stays in the United States increased 12 percent between 1997 and 2010, but the rate of hospitalization remained stable at about 1,260-1,270 stays per 10,000 population.
The average length of stay decreased 5 percent from 4.9 days in 1997 to 4.7 days in 2010.
Aggregate inflation-adjusted hospital costs were $375.9 billion in 2010-a 62 percent increase since 1997. Average costs per stay increased 45 percent to $9,700 in 2010.
In 2010, more than half of hospital stays were billed to Medicare and Medicaid.
To read the complete brief, click here.