Influence of Maternal Prenatal Vitamin D Status on Infant Oral Health

Table 5.18 – Logistic regression for ECC* (excluding white spot lesions) and dental
status and behaviour <strong>of</strong> child and his/her family
Variable Regression
Coefficient
(b)
Standard
Error b
Adjusted
Odds Ratio
± 95%
Confidence
Interval
P value
Other siblings
had ECC
(reference: no)
Infant’s teeth
being cleaned
or brushed
(reference: no)
Child had
dental
problem
(reference: no)
1.58 0.96 4.87 0.74, 31.66 .10
-0.65 1.17 0.52 0.053, 5.10 .57
1.50 1.19 4.48 0.43, 46.16 .21
Infant’s age at -1.76 0.89 0.17 0.030, 0.98 .047
time <strong>of</strong> dental
examination
(reference: ≥ 14
months)
Mother
-0.19 1.16 0.82 0.084, 8.08 .87
believed ECC
preventable
(reference: no)
*ECC reference = yes R 2 = 60.7%
An overall regression model was constructed that only included those variables
that were significantly associated with ECC in the earlier models in this Chapter.
25(OH)D was also added to this model as it was <strong>of</strong> particular interest in this prospective
study. Results appearing Table 5.19(a) reveal that the presence <strong>of</strong> enamel hypoplasia and
the age <strong>of</strong> the infant at the time <strong>of</strong> the dental assessment for this study were significantly
associated with ECC. While not statistically significant, 25(OH)D did approach the
threshold <strong>of</strong> significance. However, interesting results were found when a backwards
logistic regression using these same variables was performed. The final iteration <strong>of</strong> the
model retained three <strong>of</strong> these variables, all showing a significant association with ECC;
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