For immediate release:
Tuesday, March 28, 2006
12:01 a.m. EDT


Christopher Fleming

Population Aging Plays Small Role In Growing
Demand For Hospital Services

Health Affairs Study Dispels Myth That Aging Baby Boomers
Justify Rapid Hospital Expansion

Bethesda, MD -- While the aging of the baby boomers is an oft-cited justification for the sharp increase in U.S. hospital construction, population aging will play a relatively small role in rising demand for inpatient hospital care over the next decade, according to a study by Center for Studying Health System Change (HSC) researchers published today as a Web Exclusive in the journal Health Affairs.

Between 2005 and 2015, the study estimates that population aging will raise use of inpatient services by only 0.74 percent per year -- or 7.6 percent over the entire decade, compared with a projected overall 64.8 percent increase in use of inpatient services during the same period.

Local population trends and medical technology advances will be far more important in forecasting community needs for additional inpatient hospital capacity than population aging, according to the study. You can read the study at

“The findings are a cautionary tale for hospital administrators to look before they leap into large-scale expansions based on the notion that an aging population will drive big increases in demand for inpatient care,” said Paul B. Ginsburg, Ph.D., president of HSC, a nonpartisan policy research organization funded principally by the Robert Wood Johnson Foundation, and a coauthor of the study along with HSC consulting researcher Bradley Strunk and HSC health research assistant Michelle Banker.

Despite popular misconceptions that the U.S. population is aging rapidly, the reality is that between 2005 and 2015 the average age of the U.S. population is projected to increase only from 36.5 to 37.9 years -- or an average annual increase of 0.37 percent. Aging will play a bigger role in increased inpatient utilization between 2005 and 2015 than in the previous decade, but the overall impact of aging will still be relatively small, the study found.

The study, “The Effect of Population Aging on Future Hospital Demand,” also found that the consequences of aging vary widely across medical conditions treated in an inpatient setting. Population aging will have a relatively large effect on increased utilization for some conditions, especially certain cardiovascular and orthopedic services. But aging has the opposite effect on other conditions, including stagnant or declining use of certain services related to childbirth and mental illnesses.

To illustrate the relative roles of aging versus medical technology, the researchers looked back at inpatient utilization rates for two cardiac procedures: coronary artery bypass graft (CABG) surgery and percutaneous transluminal coronary angioplasty (PTCA). Between 1993 and 2002, if nothing had changed other than the age distribution of the population, use of each of the procedures would have increased 0.6 percent a year. The actual growth rates, however, were strikingly divergent: The number of people who received PCTA during an inpatient stay grew a total of 83.4 percent, or 7 percent a year, from 1993 to 2002, while the number of patients receiving CABG surgery grew a total of 1.4 percent, or 0.2 percent a year.

“Although aging will likely have an important impact on spending, its magnitude will be dwarfed by the impact of advances in technology and other factors that affect medical practice patterns,” the study concludes.


Health Affairs, published by Project HOPE, is the leading journal of health policy. The peer-reviewed journal appears bimonthly in print with additional online-only papers published weekly as Health Affairs Web Exclusives at


©2006 Project HOPE–The People-to-People Health Foundation, Inc.