Table 2.

Odds ratios for factors associated with the incidents and non-treatment of caries

Variables	DMFT ≥ 1			Non-treatment (DMFT ≥ 1)
	(N = 1253)			(N = 808)
	OR	95 % CI		OR	95 % CI
Household income level
Low	0.96	0.63	1.47	2.11	1.16	3.86
Middle	0.95	0.64	1.40	2.14	1.27	3.62
High	1.00			1.00
Maternal education level
Elementary school graduate or lower	1.15	0.55	2.40	2.59	0.67	10.00
Middle or high school graduate	1.34	0.99	1.81	0.99	0.61	1.59
Some college or university graduate	1.00			1.00
Sex
Male	1.00			1.00
Female	1.91	1.41	2.59	0.65	0.45	0.95
Age
9 to 12 years	1.00			1.00
13 to 15 years	2.47	1.79	3.43	1.61	0.91	2.83
16 to 18 years	3.63	2.44	5.41	2.02	1.10	3.73
Region of residence
Urban	1.00			1.00
Rural	0.95	0.56	1.60	0.70	0.41	1.20
Type of health insurance
NHI	1.00			1.00
Medical aid	1.39	0.61	3.17	0.43	0.18	1.03
Private insurance
Yes	1.00			1.00
No	1.69	1.02	2.82	1.05	0.55	2.02
Self-rated perception of dental health status
High	1.00			1.00
Middle	1.81	1.26	2.59	0.83	0.48	1.46
Low	2.95	1.77	4.92	0.87	0.45	1.67
Experience of preventive dental care in the past year
Yes	1.00			1.00
No	0.98	0.60	1.59	1.20	0.64	2.22
Frequency of teeth brushing per day
0–1	1.10	0.67	1.81	2.76	1.13	6.71
≥ 2	1.00			1.00
Number of tools used for oral care
0	0.84	0.63	1.12	0.98	0.66	1.46
≥ 1	1.00			1.00
Regular checkups for oral care
Yes	1.00			1.00
No	0.78	0.57	1.07	3.76	2.58	5.49
DMFT score
1 to 2				1.00
3 to 4				0.98	0.58	1.65
5 to 6				0.47	0.27	0.83
7≤				0.32	0.17	0.60
Year
2012	1.00			1.00
2013	0.72	0.50	1.02	1.28	0.81	2.00

DMFT decayed missing and filled teeth, OR odds ratio, CI confidence interval