Table 1.

Characteristics of the Study Population in Ardabil, 2019

		n	%/mean
Age, years		436	46.4
Sex	Male	394	90.4
	Female	42	9.6
Education	Illiterate	41	9.4
	Primary and secondary school	117	26.8
	University graduate	278	63.8
Household size		436	3.8
Employment	Unemployed	29	6.6
	Self-employed	218	50.0
	Employed	128	29.4
	Retired	61	14.0
Dental health insurance	Yes	103	23.6
	No	333	76.4
Income per month (IRR)	<10 million	49	11.2
	10–20 million	156	35.8
	20–40 million	150	34.4
	>40 million	81	18.6

Abbreviation: IRR, Iranian Rial.