{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,23]],"date-time":"2026-07-23T02:47:56Z","timestamp":1784774876855,"version":"3.55.0"},"reference-count":63,"publisher":"MDPI AG","issue":"21","license":[{"start":{"date-parts":[[2023,11,1]],"date-time":"2023-11-01T00:00:00Z","timestamp":1698796800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"National Institutes of Health","award":["1 K23 MD016431-01"],"award-info":[{"award-number":["1 K23 MD016431-01"]}]},{"name":"National Institutes of Health","award":["R01 MD011575"],"award-info":[{"award-number":["R01 MD011575"]}]},{"name":"Texas Woman\u2019s University Office of Research and Scholarly Programs","award":["1 K23 MD016431-01"],"award-info":[{"award-number":["1 K23 MD016431-01"]}]},{"name":"Texas Woman\u2019s University Office of Research and Scholarly Programs","award":["R01 MD011575"],"award-info":[{"award-number":["R01 MD011575"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Nutrients"],"abstract":"<jats:p>Vitamin D deficiency (25 (OH)D &lt; 20 ng\/mL) is a modifiable risk factor that has been associated with an increased risk of preterm birth (PTB) (&lt;37 weeks gestation). Black women are at a high risk for vitamin D deficiency due to higher melanin levels. Vitamin D sufficiency may be protective against PTB risk in Black women. Black participants between 8 and 25 weeks of gestation were included in this nested case\u2013control study. The sample consisted of women who had either PTBs (n = 57) or term births, were selected based on maternal age compared to those who had PTBs (n = 118), and had blood samples available between 8 and 25 weeks of gestation. The women completed questionnaires about depressive symptoms and smoking behavior and had blood collected to determine their vitamin D levels. Gestational age at birth, hypertensive disorders, and body mass index (BMI) were collected from the medical records. The odds of PTB were increased by 3.34 times for participants with vitamin D deficiency after adjusting for hypertensive disorders of pregnancy and depressive symptoms. Vitamin D assessment and supplementation may be an important intervention for preventing PTB in pregnant Black women.<\/jats:p>","DOI":"10.3390\/nu15214637","type":"journal-article","created":{"date-parts":[[2023,11,1]],"date-time":"2023-11-01T03:29:33Z","timestamp":1698809373000},"page":"4637","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":9,"title":["Vitamin D Status as an Important Predictor of Preterm Birth in a Cohort of Black Women"],"prefix":"10.3390","volume":"15","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-7187-3998","authenticated-orcid":false,"given":"Jennifer","family":"Woo","sequence":"first","affiliation":[{"name":"College of Nursing, Texas Woman\u2019s University, Dallas, TX 75235, USA"},{"name":"Greene Center for Reproductive Biology, UT Southwestern, Dallas, TX 75390, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Thomas","family":"Guffey","sequence":"additional","affiliation":[{"name":"Center for Research Design and Analysis, Texas Woman\u2019s University, Denton, TX 76204, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6695-4208","authenticated-orcid":false,"given":"Rhonda","family":"Dailey","sequence":"additional","affiliation":[{"name":"Department of Family Medicine and Public Health Sciences, Wayne State University, Detroit, MI 48202, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Dawn","family":"Misra","sequence":"additional","affiliation":[{"name":"Department of Epidemiology and Biostatistics, Michigan State University, East Lansing, MI 48823, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Carmen","family":"Giurgescu","sequence":"additional","affiliation":[{"name":"College of Nursing, University of Central Florida, Orlando, FL 32816, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2023,11,1]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Hamilton, B.E., Martin, J.A., Osterman, M.J., and Rossen, L.M. 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