Table 1.

Basic Characteristics of Participants Across Study Samples

	Clinic Invitation (n = 169)
	Oral Health Questionnaire (n = 484)	Non-Responders (n = 92)	Responders: Validation Sample (n = 77)
Sample characteristics
Current mean age (years)	59.3	56.7	59.3
Education (% ≥college graduate)	64.0	60.9	72.7
Current smoker (%)	8.3	11	9.5
DM diagnosis (%)	18.4	14.1	23.4
Dental status self-report
Self-reported tooth count (mean)	23.4	25.2	24.8
Time since last dental visit for any reason <12 months (%)	80.9	73.9	88.3
Time since last dental cleaning <12 months (%)	78.8	72.8	84.4
Currently in need of dental treatment (%)	35.9	44.0	39.2
Has partial or full dental insurance (%)	82.2	87.0	82.9
Unable to afford needed dental care in the last 12 months (%)	17.3	18.9	22.4