Chronic Illness and Caregiving was conducted by Harris Interactive Inc. on behalf of The Robert Wood Johnson Foundation, Johns Hopkins University, and Partnership for Solutions. The survey was conducted from March 17, 2000 through November 22, 2000 with a total of 1,663 adults 18 years of age and older. This study included a national cross-section of 1,490 adults, with an additional oversample of persons with a chronic illness and adults who provide informal caregiving services, for a total of 663 chronically ill and 320 caregivers. The survey was conducted from the centralized telephone research centers of Harris Interactive Inc. in Youngstown, Ohio and Binghamton, New York.
The survey data were weighted to reflect the demographic composition of the U.S. population to the following variables: age, education, race/ethnicity, insurance status, household size, and number of telephone lines in a household, using the March 1999 Current Population Survey from the U.S. Census Bureau. Additionally, the data were weighted to adjust for the oversample of the chronically ill and caregivers.