Hospitals in the US spent about $56bn in 2007 caring for baby boomers aged 55–64 years, equalling nearly 16% of their total patient care costs, according to a new report.

The Agency for Health Care Research report said the cost of treating baby boomers was almost equal to the amount spent on people ten years older but it was $10bn more than the amount spent on those aged 45–54 years.

The odds of hospitalising baby boomers were two to three times more than 45–54 year olds for conditions such as osteoarthritis, stroke, respiratory failure and irregular heart beat, the report said.

The report is based on statistics from the 2007 Nationwide Inpatient Sample.