Table 1.

Participant demographic characteristics.

Characteristic		Value (N=8392)
Age (years), mean (SD)		47.53 (13.83)
Gender (n=7303), n (%)
	Female	6129 (83.92)
	Male	1147 (15.71)
	Other	27 (0.37)
Ethnicity (n=6774), n (%)
	Hispanic	436 (6.44)
	Non-Hispanic	6338 (93.56)
Race (n=7338), n (%)
	White	6586 (91.75)
	Black or African American	231 (3.22)
	Asian	216 (3.01)
	Native American or Alaska Native	83 (1.16)
	Native Hawaiian or Pacific Islander	27 (0.38)
	Other	195 (2.72)
Income (US $) (n=6949), n (%)
	≤20,000	212 (3.05)
	21,000-40,000	402 (5.79)
	41,000-60,000	705 (10.15)
	61,000-80,000	942 (13.56)
	81,000-100,000	1055 (15.18)
	>100,000	3633 (52.28)
Education level (n=7319), n (%)
	11th grade or less	8 (0.11)
	High school or General Educational Development	161 (2.20)
	Some college	826 (11.29)
	2-year college or technical degree	2670 (36.48)
	Bachelor’s degree	424 (5.79)
	Graduate degree	3230 (44.13)
Employment (n=7297), n (%)
	Employed	5084 (69.67)
	Retired	1012 (13.87)
	Unemployed	477 (6.54)
	Homemaker	306 (4.19)
	Unable to work	252 (3.45)
	Student	166 (2.27)
Rural-urban commuting area (RUCA) code (n=7044) , n (%)
	1: Metropolitan area core: primary flow within an Urbanized Area (UA)	6038 (85.73)
	2: Metropolitan area high commuting: primary flow 30% or more to a UA	409 (5.83)
	3: Metropolitan area low commuting: primary flow 10% to 30% to a UA	23 (0.29)
	4: Micropolitan area core: primary flow within an Urban Cluster (UC) of 10,000 to 49,999 (large UC)	295 (4.18)
	5: Micropolitan high commuting: primary flow 30% or more to a large UC	42 (0.63)
	6: Micropolitan low commuting: primary flow 10% to 30% to a large UC	9 (0.11)
	7: Small town core: primary flow within a UC of 2500 to 9999 (small UC)	121 (1.69)
	8: Small town high commuting: primary flow 30% or more to a small UC	11 (0.24)
	9: Small town low commuting: primary flow 10% to 30% to a small UC	11 (0.22)
	10: Rural areas: primary flow to a tract outside a UA or UC	85 (1.19)