OBJECTIVE:To use the ecology model of health care to contrast participation of black, non-Hispanics (blacks); white, non-Hispanics (whites); and Hispanics of any race (Hispanics) in 5 health care settings and determine whether disparities between those individuals exist among places where they receive care.
DESIGN:1996 Medical Expenditure Panel Survey data were used to estimate the number of black, white, and Hispanic people per 1,000 receiving health care in each setting.
SETTING:Physicians' offices, outpatient clinics, hospital emergency departments, hospitals, and people's homes.
MAIN MEASUREMENT:Number of people per 1,000 per month who had at least one contact in a health care setting.
RESULTS:
According to a recent report by the Centers for Disease Control (CDC), racial and ethnic minorities fare worse than nonminorities in several major health status categories, with little progress in reduction of disparities in most areas since 1990.1 For blacks and Hispanics, the incidence of infant and maternal mortality is higher, life expectancy is lower, and rates of some chronic diseases are greater than for whites. The overwhelming evidence of disparities in health and health care has sparked research comparing populations in terms of their characteristics or receipt of specific services. However, this perspective does not address the broader interactions of populations with the various settings of health care. Looking at populations and where they go when they decide to seek health care provides an "outside-in" view that helps explain where there is the greatest contribution to disparities.The Ecology of Medical Care by White et al. in 1961 19 and reprised by Green et al. in 2001 20 is an example of such a perspective. The ecology model depicts the number of people per 1,000 who access the health care system in an average month. The model does not report the quantity of services provided, focusing instead on individuals and whether they received any care in a health care setting. The methods of the ecology model do not permit conclusions about cause and effect, but they do elucidate who is getting care in those settings.