Supplemental Table. Baseline characteristics of study subjects

	Weighted N	%
Age 45-64 years ≥65 years	512 361	58.7 41.3
Gender Male Female	382 491	43.8 56.2
Area of residence Rural Urban	436 437	50.0 50.0
Race non-Hispanic White non-Hispanic Black	628 243	72.1 27.9
Level of formal education Did not complete high school Completed high school or above	184 689	21.1 78.9
Able to pay an unexpected $500 dental bill Able to pay comfortably Able to pay, but with difficulty Not able to pay	406 342 122	46.6 39.3 14.1
Dental insurance status Has dental insurance No dental insurance	294 579	33.7 66.3
Approach to dental care Problem-oriented attender Regular attender	399 474	45.8 54.2