Abstract
ObjectiveThis study aimed to describe the vitamin D status of pregnant women in Western Australia and identify predictors of deficiency in pregnancy. MethodsA cross‐sectional study was conducted using linked data from statewide administrative data collections. Participants included pregnant women aged 18–44 years who gave birth between 2012 and 2014. ResultsThe mean 25‐hydroxyvitamin D (25[OH]D) concentration was 70.7 nmol L−1 (SD 25.7; range 5–255 nmol L−1). Approximately one‐fifth of the pregnant women were vitamin D deficient (<50 nmol L−1). Maternal age (under 25 years) was identified as an independent risk factor of vitamin D deficiency in addition to known predictors. Only 20% of women were screened within the first 10 weeks of their pregnancy. ConclusionsIn addition to the existing risk factors for deficiency, maternal age was an independent predictor of vitamin D deficiency. There was a large discrepancy between the time of first antenatal visit and screening for vitamin D deficiency. Implications for public healthOur findings support the addition of maternal age (under 25 years) to the current clinical guidelines for targeted screening of 25(OH)D levels in pregnancy and the practical application of screening for vitamin D deficiency at the first antenatal visit.
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More From: Australian and New Zealand Journal of Public Health
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