Vitamin Biomarker Risk Score for 90-Day Stroke Outcome in a 655-Patient Cohort
655 acute ischemic stroke patients from Huludao Central Hospital, admitted between November 2024 and July 2025, were retrospectively analyzed. The dataset includes demographic, clinical, and serum vitamin biomarker levels (vitamins D, E, A, K1, B12, folate, homocysteine) used to develop a nomogram for predicting 3-month functional outcome. The model was developed and internally validated by Yang Xu, with results published in May 2026.