Racial and ethnic differences in predictors of vitamin D among pregnant women in south-eastern USA

Devika Chawla, Julie L. Daniels, Sara Neelon, Bernard F. Fuemmeler, Cathrine Hoyo, Jessie P Buckley

Research output: Contribution to journalArticle

Abstract

Insufficient vitamin D during pregnancy increases risk of adverse outcomes, with known differences by race/ethnicity. We sought to determine whether predictors of vitamin D insufficiency vary by race/ethnicity in an ethnically diverse pregnancy cohort. Plasma 25-hydroxyvitamin D concentrations and patient characteristics were measured at first prenatal visit to prenatal clinics in south-eastern USA between 2009 and 2011 (n 504). Prevalence ratios (PR) and 95 % CI were estimated using multivariable regression to quantify predictors of vitamin D insufficiency, overall and by race/ethnicity. In race/ethnicity-stratified models, season was most associated with vitamin D insufficiency among non-Hispanic white women; PR for winter v. summer were 3·58 (95 % CI 1·64, 7·81) for non-Hispanic white, 1·52 (95 % CI 1·18, 1·95) for Hispanic and 1·14 (95 % CI 0·99, 1·30) for non-Hispanic black women. Although women with darker skin tones are most vulnerable to prenatal vitamin D insufficiency, season may be more strongly associated with insufficiency among women with lighter skin tones.

Original languageEnglish (US)
JournalJournal of Nutritional Science
DOIs
StatePublished - Jan 1 2019

Keywords

  • 25-Hydroxyvitamin D
  • Ethnicity
  • Race
  • Vitamin D

ASJC Scopus subject areas

  • Food Science
  • Endocrinology, Diabetes and Metabolism

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