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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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Table 5.6 – Multiple regressi<strong>on</strong> status for 25(OH)D c<strong>on</strong>centrati<strong>on</strong> – Possible signs and<br />

symptoms <str<strong>on</strong>g>of</str<strong>on</strong>g> deficiency<br />

Variable<br />

Regressi<strong>on</strong> ± 95% C<strong>on</strong>fidence P value<br />

Coefficient<br />

Interval<br />

Intercept 48.45<br />

<str<strong>on</strong>g>Maternal</str<strong>on</strong>g> health<br />

rating<br />

(reference: average/poor)<br />

Trouble walking<br />

(reference: no)<br />

Weak arms or legs<br />

(reference: no)<br />

Adjusted R 2 = 7.5%<br />

5.87 7.07 .10<br />

-8.70 9.36 .068<br />

-11.05 8.07 .0076<br />

II. Logistic Regressi<strong>on</strong> Analysis for Enamel Hypoplasia<br />

This next secti<strong>on</strong> reports results <str<strong>on</strong>g>of</str<strong>on</strong>g> regressi<strong>on</strong> analyses for enamel hypoplasia exhibited in<br />

the primary teeth <str<strong>on</strong>g>of</str<strong>on</strong>g> infants from mother-infant dyads. Several small regressi<strong>on</strong> models<br />

were undertaken to prevent over-fitting <str<strong>on</strong>g>of</str<strong>on</strong>g> the models. The first logistic regressi<strong>on</strong> model<br />

examined the associati<strong>on</strong> between enamel hypoplasia and serum metabolite levels from<br />

blood samples obtained from mothers during pregnancy. Of interest was whether any had<br />

an influence <strong>on</strong> enamel hypoplasia in the primary teeth <str<strong>on</strong>g>of</str<strong>on</strong>g> <str<strong>on</strong>g>of</str<strong>on</strong>g>fspring. Odds ratios less than<br />

<strong>on</strong>e are protective against enamel hypoplasia while those greater than <strong>on</strong>e indicate an<br />

increase in the risk for enamel hypoplasia.<br />

Table 5.7 shows the results from this model, which indicated that <strong>on</strong>ly serum<br />

calcium was significantly associated with enamel hypoplasia in infants (p=.05). Mothers<br />

with lower calcium levels during pregnancy were significantly more likely to have infants<br />

with enamel hypoplasia. Further, results <str<strong>on</strong>g>of</str<strong>on</strong>g> backwards logistic regressi<strong>on</strong> analysis also<br />

c<strong>on</strong>firmed this relati<strong>on</strong>ship as <strong>on</strong>ly calcium remained in the model (p=.04) (data not<br />

shown).<br />

5-6

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