Table 5: Effect of various factors on the prevalence of severe early childhood caries at 20 ± 2.5 months of age in univariable and multivariable logistic regression analyses*.

VariableUnivariable analysisMultivariable analysis*
OR95% CI**OR95% CI**

Child’s gender
 Male referencereference
 Female0.450.19–1.110.480.19–1.18
Age at dental exam (months)1.181.03–1.36 1.201.02–1.37
Family structure
 One parentreferencereference
 Two parents0.370.16–0.88 0.370.14–0.93
Mother’s age at childbirth in years
 Under 25referencereference
 25 to 290.840.32–2.240.840.27–2.65
 30 to 450.590.19–1.840.550.17–1.75
Mother’s highest level of education
 Primaryreferencereference
 Secondary0.660.22–2.040.470.12–1.81
 Tertiary0.890.33–2.480.870.29–2.57
Mother’s’ employment
 Employed reference reference
 Unemployed1.090.47–2.480.970.41–2.30

*Variables entered in the multivariable analyses were age at examination in months, age at first tooth eruption in months, child’s gender, mother’s age, level of education and employment status.
**OR: odds ratio; 95% CI: 95% confidence interval.
P < 0.01.