Table 1.

Independent Variable Categories

Variable	Categories
Health Insurance coverage	Yes No
Able to afford need health care in previous 12 months	Yes No
Primary care provider status	No personal physician One or more personal physician
Smoking status	Current smoker Former smoker Never smoker
Combined measure of activity limitation and use of equipment	No activity limitation or equipment use Activity limitation but not equipment use Activity limitation and equipment use
Age	42-54 years 55-64 years 65-80 years
Number people in household	1 2 3 or more
Education	Less than high school High school graduate or GED Some college College graduate
Marital status	Never married Previously married Married or partnered
Race/ethnicity	Hispanic Black non-Hispanic White non-Hispanic Other non-Hispanic
Region	West Midwest South Northeast
Income	$0-<$35,000 $35,000-<$50,000 $50,000-<$75,000 $75,000 or more Missing/don't know/refused
Body Mass Index	Not overweight Overweight Obese Missing/don't know/refused