Table 3. Association between socio-demographic factors and OHI-S according to multiple logistic regression analysis.

Predictor Variables	Adjusted ORa (CI 95%)	P value
Age (year)	1.36(1.24–1.48)	<0.001
Gender
Boys(Reference category)
Girls	0.85(0.64–1.11)	0.24
District
Center (Reference category)
Suburb	0.96(0.71–1.28)	0.79
Dental Pain Experience
Never (Reference category)
Seldom	0.86(0.63–1.18)	0.36
Often	1.28(0.89–1.83)	0.17
Father’s Education
≤Primary (Reference category)
High School	1.18(0.53–2.58)	0.67
>High School	1.00(0.39–2.55)	0.99
Mother’s Education
≤Primary (Reference category)
High School	0.66(0.31–1.41)	0.29
>High School	0.66(0.25–1.77)	0.41
Father’s Occupation
Labor worker (Reference category)
Self-employed	0.91(0.59–1.39)	0.66
Government employee	0.97(0.58–1.60)	0.91
Mother’s Occupation
Not employed (Reference category)
Self-employed	0.81(0.52–1.29)	0.39
Government employee	2.27(1.23–4.17)	0.008
Parental supervision on oral hygiene
Yes (Reference category)
No	1.12(0.83–1.52)	0.43

Dependent variable, OHI-S, was dichotomized as good = 0, fair/poor oral hygiene = 1

CI, confidence interval; OR, odds ratio

^aThe regression was adjusted for sex & age