Table 1. Participant Characteristics.

Characteristic	Participants, No. (%)a
Total participants, No.	5000
Age, mean (SD), y	45.0 (16.9)
Female sex	2549 (51.0)
Male sex	2451 (49.0)
Race/ethnicity
Non-Hispanic White	3819 (76.4)
Non-Hispanic Black	404 (8.1)
Hispanic	318 (6.4)
Non-Hispanic Asian	309 (6.2)
Non-Hispanic other or multiple	150 (3.0)
Census region
Northeast	950 (19.0)
Midwest	1150 (23.0)
South	1750 (35.0)
West	1150 (23.0)
Married or partnered	2848 (57.0)
Educational level
<High school diploma	103 (2.1)
High school diploma or GED certificate	1047 (20.9)
Some college	1709 (34.2)
Bachelor's degree	1435 (28.7)
>Bachelor's degree	706 (14.1)
Health insurance coverage
Uninsured	443 (8.9)
Medicare	1147 (22.9)
Medicaid	535 (10.7)
Both Medicare and Medicaid	187 (3.7)
Private or employer-based	2484 (49.7)
Not sure	204 (4.1)
Perceived health status
Excellent	690 (13.8)
Very good	1780 (35.6)
Good	1794 (35.9)
Fair	605 (12.1)
Poor	131 (2.6)
Employed	2940 (58.8)
Family income, US $
<30 000	1260 (25.2)
30 000-49 999	991 (19.8)
50 000-79 999	1182 (23.6)
80 000-99 999	534 (10.7)
100 000-149 999	660 (13.2)
150 000-199 999	225 (4.5)
≥200 000	148 (3.0)
Chronic disease, No.
0	2612 (52.2)
1	1066 (21.3)
2	617 (12.3)
>2	520 (10.4)
Not sure	185 (3.7)
Has primary care	3963 (79.3)
Visits in past 6 mos, mean (95% CI)
Physician visit	2.1 (2.0-2.1)
ED visit	0.3 (0.3-0.3)
Hospital admissions in past 6 mos, mean (95% CI)	0.2 (0.2-0.2)
Global health care rating in past 6 mos, mean (95% CI), 0-10 points	7.4 (7.3-7.5)

Abbreviations: ED, emergency department; GED, general educational development.

^aNationally representative sample by age, sex, and census region. Percentages may not sum to 100 because of rounding.