Table 1.

Description of study participants.

Variables	Measurement		Missing values
	Frequency	Percentage
Sex
Male	832	43.1	15
Female	1101	56.9
Total	1933	100
Participants age group (mean age: 28.6)
Under 18	233	12.2	38
18–24	852	44.6
25–34	426	22.3
35–44	183	9.8
45–54	127	6.6
55–64	57	2.9
>64	32	1.7
Total	1910	100
Education level
No education	334	17.1	4
Secondary education	277	14.2
High school	869	44.7
Higher education	464	23.8
Total	1944	100
Wealth status
Poor	259	13.4	18
Middle	1230	63.7
Good	441	22.8
Total	1930	100
Beverage consumption
No	374	19.3	18
Sometimes	1219	63.1
Usually	337	17.4
Total	1930	100
Sweet and candy consumption
No	302	15.5	5
Sometimes	1129	58.1
Usually	512	26.3
Total	1943	100
Citric fruits and foods
No	380	19.6	9
Sometimes	1086	56.0
Usually	473	24.3
Total	1939	100
Snack
No	761	39.2	10
Sometimes	865	44.6
Usually	312	16.1
Total	1938	100
Gastric diseases
No	1335	68.7	4
Yes	609	31.3
Total	1944	100
Xerostomia
No	1551	79.7	3
Yes	394	20.3
Total	1945	100
Bruxism
No	1569	81.1	12
Yes	367	18.9
Total	1936	100
Continuous medication use
No	1651	85.2	9
Yes	288	14.8
Total	1939	100
Using dental floss
No	942	48.5	5
Sometimes	774	39.8
Usually	227	11.7
Total	1943	100
Tooth brushing
Never	193	9.9	8
After meals	375	19.3
Mornings	573	29.5
Nights	617	31.8
Morning and night	182	9.4
Total	1940	100
Dental check-up
No	675	34.8	8
Every 6 months	150	7.7
Yearly	128	6.6
When it is painful	985	50.8
Total	1940	100