Table 2. Univariate and multivariate analysis of different factors associated with dental caries status in deciduous tooth (n = 831).

		Univariate analysis		Multivariate analysis
		dmft ≥1	dmft index	dmft ≥1	dmft index
Variables	Categories	1a Caries prevalence % (n)	1b F- test (df)	1c OR, 95% CI	1d RR, 95% CI
Child sex	Male	50.3 (187)	0.85 (1)	1	1.08 (0.98, 1.19)
	Female	49.7 (185)		1.11 (0.85, 1.46)	1
Child age	3 years	3.2 (12)	0.41 (2)	1	1.12 (0.88, 1.42)
	4 years	18.8 (70)		1.48 (0.65, 3.37)	0.92 (0.81, 1.05)
	5 years	78.0 (290)		1.02 (0.47, 2.18)	1
Residence	Rural	84.7 (315)	6.37 (1) ***	1	1.34 (1.15, 1.56) ***
	Semi-rural	15.3 (57) ***		0.55 (0.39, 0.79) ***	1
Mothers level of education	Informal and Primary education	86.6 (322)	2.48 (1)	1	1.034 (0.8, 1.25)
	Secondary education and above	13.4 (50)		0.96 (0.64, 1.43)	1
Fathers level of education	Informal and Primary education	79.8 (295)	1.81 (1)	1	1.11 (0.95, 1.29)
	Secondary education and above	20.2 (75)		0.72 (1.07, 1.58)	1
Mothers working condition	Unemployed	96.2 (358)	4.03 (1) *	1	1.65 (1.19, 2.27) ***
	Employed	3.8 (14)		0.78 (0.39, 1.53)	1
Fathers working condition	Unemployed	90.1 (335)	0.92 (1)	1	0.95 (0.78, 1.15)
	Employed	9.9 (37)		0.95 (0.60, 1.49)	1
Do you assist your child to brush?	No	64.5 (240)	0.50 (1)	1	0.85 (0.77, 0.95) ***
	Yes	35.5 (132)		1.32 (0.98, 1.77)	1
Does your child use toothpaste while brushing?	No	18.3 (68)	3.23 (1)	1	1.18 (1.04, 1.34) ***
	Yes	81.7 (304)		1.09 (0.77, 1.55)	1
Frequent child tooth brushing	Not every day	3.0 (11)	0.10 (2)	1	1.10 (0.79, 1.54)
	Once a day	73.9 (275)		1.04 (0.45, 2.45)	1.11 (0.98, 1.25)
	Twice or more a day	23.1 (86)		1.01 (0.73, 1.39)	1
Visible plaques dichotomous score	No	29.6 (110) ***	16.08 (1)	1	0.69 (0.58, 0.73) ***
	Yes	70.4 (262)		2.97 (2.23, 3.96) ***	1

^1a Pearson Chi-square test.

^1b One Way Anova.

^1c Logistic regression.

^1d Poisson regression.

*** p<0.01.

*p<0.05.