Effect of the vitamin D supplementation on clinical outcomes and inflammatory status in COVID-19 patients: an umbrella review.

BMC Nutr · 2025 · PMC12042636 · PMID 40301951

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did not reach statistical significanceno p-value reported

Similarly, Sîrbu et al., in a systematic review and meta-analysis based on thirteen RCT studies, reported that the overall effect on mortality did not reach statistical significance [ 51 ].

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