Lower Vitamin D During Acute Exacerbation Is Associated with Very Severe Chronic Obstructive Pulmonary Disease.

Medicina (Kaunas) · 2025 · PMC12194935 · PMID 40572667

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did not reach statistical significanceno p-value reported

Their combination improved diagnostic performance, suggesting a potential additive effect, though this combination did not reach statistical significance in LOO regression.

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