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Influence of Maternal Prenatal Vitamin D Status on Infant Oral Health

Influence of Maternal Prenatal Vitamin D Status on Infant Oral Health

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vitamin D. However, it did suggest that <str<strong>on</strong>g>of</str<strong>on</strong>g>fspring <str<strong>on</strong>g>of</str<strong>on</strong>g> participants who had heard <str<strong>on</strong>g>of</str<strong>on</strong>g><br />

vitamin D were less likely to have enamel hypoplasia (p=.053).<br />

Table 5.8 – Logistic regressi<strong>on</strong> for enamel hypoplasia* – <str<strong>on</strong>g>Maternal</str<strong>on</strong>g> awareness and<br />

knowledge <str<strong>on</strong>g>of</str<strong>on</strong>g> calcium and vitamin D<br />

Variable Regressi<strong>on</strong><br />

Coefficient<br />

(b)<br />

Standard<br />

Error b<br />

Adjusted<br />

Odds Ratio<br />

± 95%<br />

C<strong>on</strong>fidence<br />

Interval<br />

P value<br />

Heard <str<strong>on</strong>g>of</str<strong>on</strong>g><br />

vitamin D<br />

(reference: no)<br />

-0.88 0.45 0.42 0.17, 1.01 .053<br />

Knew what<br />

calcium is<br />

important for<br />

(reference: no)<br />

*Enamel Hypoplasia reference = yes R 2 = 6.4%<br />

-0.72 0.46 0.48 0.20, 1.19 .11<br />

Another regressi<strong>on</strong> model was c<strong>on</strong>structed to examine the relati<strong>on</strong>ship between<br />

prenatal diet and prenatal care factors and risk for enamel hypoplasia in <str<strong>on</strong>g>of</str<strong>on</strong>g>fspring (Table<br />

5.9). Variables c<strong>on</strong>sidered for this model included both calcium and 25(OH)D levels <str<strong>on</strong>g>of</str<strong>on</strong>g><br />

mothers during pregnancy, whether mothers experienced gestati<strong>on</strong>al diabetes, intakes <str<strong>on</strong>g>of</str<strong>on</strong>g><br />

milk and margarine, both known to be fortified with vitamin D, and whether mothers<br />

were receiving the <strong>Health</strong>y Baby prenatal government subsidy during pregnancy. Those<br />

variables that were found to be significantly associated with the presence or absence <str<strong>on</strong>g>of</str<strong>on</strong>g><br />

enamel hypoplasia in infants were prenatal serum calcium levels <str<strong>on</strong>g>of</str<strong>on</strong>g> mothers (p=.019) and<br />

margarine use (p=.022). Those who did not eat margarine <str<strong>on</strong>g>of</str<strong>on</strong>g>ten, defined as <strong>on</strong>ce a day or<br />

more, were more than three times as likely to have an infant with enamel hypoplasia (OR<br />

= 1/0.31= 3.2). Results from a backwards logistic regressi<strong>on</strong> model involving the same<br />

variables included in the model in Table 5.9 identified three variables as being<br />

significantly associated with enamel hypoplasia, namely maternal calcium levels (p=.01),<br />

5-8

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