Why the study?
Hypertensive diseases of pregnancy complicate up to 10% of pregnancies worldwide, and vitamin D is implicated in mechanisms of preeclampsia pathophysiology.
Does Vitamin D supplementation reduce the risk of preeclampsia in pregnant women?
Population
Pregnant women across eight randomized controlled trials
Comparison
Vitamin D supplementation vs no Vitamin D supplementation
Design
Meta-analysis and systematic review of eight randomized controlled trials
Key result
Vitamin D supplementation significantly reduced the risk of preeclampsia (RR 0.45; 95% CI 0.30-0.69; P=0.0002).
Authors
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Supports vitamin D consideration in prenatal care to lower preeclampsia risk; reinforces Level 1 meta-analytic consensus.
Meta-Analysis
Does Vitamin D supplementation reduce the risk of preeclampsia in pregnant women?
Relative Risk: 0.45 (95% CI 0.3–0.69)
p-value: p=0.0002
Vitamin D supplementation during pregnancy significantly reduces the risk of preeclampsia.
Ong et al. (2023) conducted a meta-analysis in preeclampsia. Vitamin D supplementation vs. no Vitamin D supplementation was evaluated on preeclampsia (RR 0.45, 95% CI 0.30-0.69, p=0.0002). Vitamin D supplementation significantly reduced the risk of preeclampsia (RR 0.45; 95% CI 0.30-0.69; P=0.0002).
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